[go: up one dir, main page]

EP1515813B1 - Method for producing a metal strip using a twin-roll casting device - Google Patents

Method for producing a metal strip using a twin-roll casting device Download PDF

Info

Publication number
EP1515813B1
EP1515813B1 EP03738063A EP03738063A EP1515813B1 EP 1515813 B1 EP1515813 B1 EP 1515813B1 EP 03738063 A EP03738063 A EP 03738063A EP 03738063 A EP03738063 A EP 03738063A EP 1515813 B1 EP1515813 B1 EP 1515813B1
Authority
EP
European Patent Office
Prior art keywords
side plates
casting
time interval
phase
horizontal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03738063A
Other languages
German (de)
French (fr)
Other versions
EP1515813A1 (en
Inventor
Gerald Hohenbichler
Gerald Eckerstorfer
Armin Schertler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Primetals Technologies Austria GmbH
Original Assignee
Voest Alpine Industrienlagenbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voest Alpine Industrienlagenbau GmbH filed Critical Voest Alpine Industrienlagenbau GmbH
Priority to AT03738063T priority Critical patent/ATE309875T1/en
Publication of EP1515813A1 publication Critical patent/EP1515813A1/en
Application granted granted Critical
Publication of EP1515813B1 publication Critical patent/EP1515813B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637Accessories therefor
    • B22D11/0648Casting surfaces
    • B22D11/066Side dams
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0622Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels

Definitions

  • the invention relates to a method for producing a metal strip with a Zweiwalzeng screen issued and a Zweiwalzeng screen realized for carrying out the Process.
  • a Zweiwalzeng screen Sket-to-Stret-to-Stret-to-Stret-to-Stret-to-Stret-to-Stret-to-Stret-to-Stret-to-Stret-to-Stret-to-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-S-
  • the central component of a two-roll caster is of two counter-rotating Casting rolls with parallel arranged casting roll axes and two at the formed opposite end faces of the casting rolls adjacent side plates.
  • the distance between the two Gellowalzenachsen each other is adjusted so that the lateral surfaces the casting rolls form a substantially parallel casting gap, the casting thickness of the casting metal strip corresponds to the lateral surfaces of the cooperating casting rolls and the two end faces of the side plates form a circumferentially closed Space for holding the molten metal, which is fed via an inflow, to the cooled shell surfaces of the casting rolls solidified and in the form of at least a large extent fürerstarrten metal strip is discharged from the casting gap.
  • a plant of this Type and function is already known for example from WO 98/04369
  • the faces of the casting rolls lie with low tolerance in parallel planes.
  • the on The end faces of the casting rolls adjacent side plates are made of refractory Material and are embedded in a support frame, the part of a soplattenmanipulators or a supporting and supporting device for the side plates is such devices are in many Ausunsngsformen, such as from EP-A 714 715 or EP-B 620,061 known
  • the side panels made of refractory material are against the front sides of the Casting rollers pressed with predetermined pressure to a close concern to this To ensure end faces.
  • the side panels are tall and locally different exposed to mechanical and thermal loads. In the melting pool and in the area of the G confusespaltes there is a direct contact with the Metattschmetze and thus considerable thermal or chemical wear; in the area of the contact surface of Side plates and end faces of the casting rolls are predominantly more mechanical Wear by the relative movement of the components under pressure and elevated temperature.
  • WO 98/04369 To minimize the overall wear and increase the life of the side plates are already known solutions in which the side plates according to the local stresses are made of different materials.
  • the prior art side plates will bear against the casting roll surface pressed or continuously moved toward the casting roll shell surface.
  • Object of the present invention is therefore to overcome these disadvantages of the prior art to avoid and a method of producing a metal strip in one Zweiwalzeng screen initiated and the necessary Zweiwalzeng screen responded Propose, both at the start of casting a complete seal of the Melting chamber is ensured, as well as the passage of parasitic Solidification through the casting gap. Furthermore, the horizontal wear of the side plates at the contact surface with the casting-roll ends are reduced as well as the wear in the contact surface of the side plates with the solidified band shells and at the same time achieves a better strip edge quality when exiting the casting gap become.
  • This object is achieved in a method of the generic type characterized that the side plates in a first time interval in a first direction of movement be moved parallel to the G monwalzenachsen against the end faces of the casting rolls and that the side plates in a second time interval in a second Direction of movement parallel to the casting direction in the casting gap against a portion of The lateral surfaces of the casting rolls are moved.
  • both sealing surfaces are continuous or in Renewed time intervals.
  • the first time interval begins before the second Time interval.
  • an advancing movement of the side plates in the direction of G confusewalzenachsen takes place and so a grinding of the side plates on the front sides of the Casting takes place and only delayed by a vertical movement in the casting direction a grinding of the side plates on the lateral surface of the casting rolls to an extent takes place, which the respective wear by the movement of the side plates in the direction of G confusewalzenachsen corresponds.
  • the first time interval begins with the feeding of the molten metal into the melting space or before.
  • a certain amount of time advance allows the bridging of production or mounting-related inclinations of the side plates as well as production or thermal conditional deformations of the side plates and the resulting gaps between Casting rollers and side plates through the grinding process.
  • the materials for the side plates must have high thermal endurance, high thermal shock resistance, high abrasion resistance on contact with molten metal and casting surface, resistance to chemical erosion and corrosion.
  • Such materials consist of a mixture of several components of refractory base materials, such as SiO 2 , Al 2 O 3 , BN, Si 3 N 4 , ZrO 2 , graphite, etc.
  • the side plates are depending on the wear characteristics of the refractory material used against the casting rolls emotional.
  • the side plates are integrally formed. If they contain sections of different materials in order to optimally correspond to the contact with the casting roll and the molten metal, these side plate parts are joined together in a common support frame to form a jointly movable component.
  • the second time interval begins at the latest 30 minutes, preferably already 10 minutes after the beginning of the first time interval.
  • the second time interval essentially begins with the beginning of the stationary operating phase.
  • the one Material wear on the side plates from 2 mm / h to 20 mm / h, preferably 4.0 to 10mm / h is moved against a portion of the lateral surface of the casting rolls, or that the side plates during the second time interval with a contact pressure, the a material wear on the side plates of 2 mm / h to 20 mm / h, preferably 4.0 to 10mm / h corresponds to pressed against a portion of the lateral surface of the casting rolls become.
  • the enclosed in the side plates sealing surfaces are during the current Casting gradually damaged and degraded by erosion and corrosion, so it sufficient for the production of a perfect metal strip when the side plates be moved intermittently during the second time interval, with movement phases and stoppage phases alternate and the stoppage phases of the side plates 30 min, preferably 5 min, not exceed. It is sufficient if the Side plates during each movement phase by 0.01 to 2.0 mm, preferably 0.1 to 1.0 mm, are moved against a portion of the lateral surface of the casting rolls.
  • the first Time interval a Einschleifphase is arranged directly upstream, in which the side plates during a period of maximum 120 sec with a feed rate or a contact pressure, the / a medium material wear on the side plates of at least 10 mm / h, preferably at least 20 mm / h, corresponds to the end faces the casting rolls are pressed.
  • the formation of the sealing surfaces on the side plates is favorably influenced if the side plates during a subsection of this Einschleifphase possibly additionally with high contact pressure in the casting direction against a portion of the lateral surfaces of the casting rolls are pressed.
  • a convenient preparation phase to the side plates for the casting process consists in the fact that the first time interval a Einschleifphase preceded by a mean horizontal material wear on the side plates is achieved by at least 0.3 mm, this grinding phase in cold or preheated side plates and, where appropriate, between this Einschleifphase and Intermediate heating takes place at the beginning of the first time interval for this purpose at the back of the side plates heaters provided by gas burners or electric heaters, such as induction heaters, etc. may be formed.
  • horizontal and vertical are in this case interpreted as directional information under no circumstances exclusively in relation to the effect of gravity.
  • the term “horizontal” is based on the parallel Gelloviralzenachsen and their longitudinal extent.
  • the term “vertical” is based on the casting direction in the narrowest point of the casting gap formed by the casting rolls (kissing point). Depending on the position of the casting rolls to each other therefore deviating from the effective direction of gravity directions are possible.
  • this plant construction allows a process-controlled operation of the soplattenangnagna according to a given schedule under consideration of input conditions, such as steel grades, melting and superheating temperature, casting thickness, casting speed, side plate materials, etc., as well as the consideration of current disturbances in the production process, such as irregular side plate wear, Changes in casting speed and the like.
  • input conditions such as steel grades, melting and superheating temperature, casting thickness, casting speed, side plate materials, etc.
  • the arithmetic unit is designed as a single control loop, the one Is superior to the plant control system. This allows especially variable influencing variables other system components for this single control loop are considered.
  • a structurally simple embodiment and systematic structuring of the side plate support device is that the side plate support of a fixed base frame, an adjustment frame and a support frame is formed, wherein the adjustment frame via horizontal guides on the base frame and the support frame are supported for vertical side guides on the adjustment frame and the Horizontal adjustment between base frame and adjusting frame and the Vertical adjustment between adjustment frame and support frame for the side plate are arranged.
  • each side plate For preheating the side plates of each side plate is associated with a heating device, which is formed by gas burners or electric heaters and at the back of the Side plates is arranged.
  • a heating device which is formed by gas burners or electric heaters and at the back of the Side plates is arranged.
  • a two-roll caster 1 as shown schematically in Fig. 1, consists of two internally cooled, driven casting rolls 2, 3, which are parallel to casting roll axes 4, 5 rotate in opposite directions and made of two made of refractory material side plates 6, 7, each embedded in a support frame 8, 9 and secured thereto.
  • the Lateral surfaces 10, 11 of the casting rolls 2, 3 and the end faces 12, 13 of the side plates 6, 7 Together form a closed in the circumferential direction melt pool 14, the supplied by a Tauchg tellrohr 15 superheated molten metal 16 receives.
  • the casting roll 2 is rotatably fixed in a supporting frame, not shown, via supporting bearings supported
  • the casting roll 3 is in the support frame, not shown, with respect to the first Casting roller 2 supported displaceable parallel, as indicated by the double arrow.
  • a selectable casting gap 19th adjustable which corresponds to the thickness 20 of the cast metal strip 21 ( Figure 2).
  • Fig. 3 the positioning of a side plate 6 at the end faces 12, 13 of the casting rolls 2, 3 is shown in an initial phase of the casting process with a new side plate made of refractory material.
  • the melt pool 14 is filled with molten metal 16, and strand shells 23, 24 have formed on the lateral surfaces 10, 11 of the casting rolls 2, 3.
  • the side plate 6 is formed by horizontal forces F h on the support frame 8 of the side plate 6 parallel to the casting roll axes 4, Attack 5, sealing against the end face 12 of the casting roll 2 employed and moved in the effective direction of the horizontal forces F h within a certain time interval .DELTA.t 1 .
  • a vertical force F v in the casting direction, with which the side plate 6 is moved to the casting gap 19 within this time interval.
  • a state image which is determined primarily by the predetermined by the Anstellterrorismen wear of the refractory material on the end faces 12, 13 and on the lateral surfaces 10, 11 of the casting rolls 2, 3.
  • This state image is shown in FIG. 4.
  • the sealing surfaces 31, 32, 33, 34 and projecting into the Schmeizenpool 14 part of the side plate end face 12 contribute significantly to the improvement of the strip edges of the cast metal strip and to extend the soplattenstandzeit.
  • the metal surface 16 exposed end face 12 of the side plate 6 wears due to systemic chemical and mechanical erosion or corrosion.
  • the Side plate 6 is in a support frame 8, permitting thermal expansion, yielding clamped.
  • To preheat the side plates to operating temperature are on the back of the side panels in a space not shown heaters provided either by gas burners or by electric heaters, such as For example, induction heaters are formed. This will make a sudden, locally high thermal load of side plates minimized.
  • the support frame 8 is on an L-shaped adjustment frame 37 along vertical guides 38 in the casting direction vertically guided and movable by a VertikalverstellISS 39, the support frame 8 and articulated on the adjusting frame 37.
  • the adjusting frame 37 is in turn on a stationary base frame 40 supported and by horizontal guides 41 opposite arranged horizontally in the direction of the casting roll axis 4 Agebar.
  • the Horizontal adjustment 42 is on the one hand on the base frame 40 and on the other hand on Versteltrahmen 37 hinged.
  • the Vertikalverstell responded 39 and the Horizontal adjustment 42 allow a controlled or regulated Anstell- and Return movement of the side plates realized by various adjusting devices can be, such as by springs.
  • these drive systems are with Trackers coupled and allow precise adjustment of Positions and feed movements, based on default values, such as contact pressure, Feed rate, etc., as a time function of a control, or Control system can be specified.
  • This lapping phase should, if it is necessary at all, not longer than 120 sec with mean side panel wear at least 10 mm / h, preferably at least 20 mm / h. However, this value may be only briefly before Stopper opening reached.
  • the actual casting process begins with a first time interval .DELTA.t 1 , in the course of which a horizontal movement of the side plates, in the direction of G manwalzenachsen on the front sides of the casting rolls, takes place in three sections.
  • a starting phase (1st section)
  • the side plates are moved against the end faces of the casting rolls for a maximum period of 90 seconds with a wear or feed rate v s1 of 1.0 mm / h to 20 mm / h.
  • This start phase lasts at most 90 sec.
  • this start phase preferably at the beginning of the plug opening and the melt pool begins to fill with molten metal, wherein at the stopper opening and shortly thereafter a maximum value for the feed rate of 50 mm / h is not exceeded.
  • transition phase (section 2) lasting a maximum of 120 seconds during which the feed rate v s2 of the side plates is less than 10 mm / h and which leads to a stationary operating phase (section 3) in which the feed rate v s3 to values of 0.2 mm / h to 4.0 mm / h.
  • a transition phase (section 2) lasting a maximum of 120 seconds during which the feed rate v s2 of the side plates is less than 10 mm / h and which leads to a stationary operating phase (section 3) in which the feed rate v s3 to values of 0.2 mm / h to 4.0 mm / h.
  • a second time interval .DELTA.t 2 in which a vertical, thus oriented in the casting direction G feed movement of the side plates begins.
  • the feed rate v v1 is about 4.0 to 10.0 mm / h in undisturbed stationary casting operation, but may also be in a wider range from 2.0 to 20 mm / h.
  • This vertical feed motion can also be dependent on interference, if tape edge phenomena or wear, force or motion signals of the side plates indicate disturbances of the stationary wear process.
  • the vertical feed movement of the side plates is performed stepwise, ie after a rapid feed movement with a feed rate v v2 from 2.0 to 20 mm / h over a distance of 0.2 to 2.0 mm follows a Standstill phase of up to 30 min, before recently a feed movement is initiated.
  • This intermittent feed movement is sufficient to produce in the circumferential direction a resistant sealing surface between G manwalzenMantel components and side plate, which remains erosion-stable for a long time.
  • the predetermined hourly wear rates on the side plates which correspond to a feed rate (v s1 , v s2 , v s3 , v v1 , v v2 ) of the side plates, can be controlled by controlled contact pressures (p s1 , p s2 , p s3 , p v1 , p v2 ), which are applied by the horizontal and Vertikalanstellvortechnischen and transmitted to the side plates and are further controlled in a measuring and control circuit according to the predetermined for stationary conditions wear.
  • the same result can be achieved by a mechanical drive in connection with, for example, a process-controlled stepper motor.
  • FIG. 7 The control technique underlying the starting method according to the invention Structure of the two-roll caster is shown schematically in Fig. 7.
  • Fig. 7 Starting from the in Fig. 5 already shown structural structure of the side plate support device 36 with a support frame 8, 9, which receives the side plates 6, 7, an adjustment frame 37 at the respective support frame 8, 9 is guided in vertical guides 41 and a Base frame 40, on which the adjusting frame 37 is supported in horizontal guides 41 and is guided, position detecting means 44 for determining the relative position of the respective adjustment frame 37 to the base frame 40 and position detection devices 45 for determining the relative position of the respective support frame 8, 9 to the adjustment frame 37 provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Description

Die Erfindung betrifft ein Verfahren zur Erzeugung eines Metallbandes mit einer Zweiwalzengießeinrichtung und eine Zweiwalzengießeinrichtung zur Durchführung des Verfahrens. Vorzugsweise wird eine derartige Zweiwalzengießeinrichtung zur Herstellung eines Stahlbandes mit geringer Dicke, insbesondere in einem Dickenbereich von 1,0 mm bis 10 mm verwendet.The invention relates to a method for producing a metal strip with a Zweiwalzengießeinrichtung and a Zweiwalzengießeinrichtung for carrying out the Process. Preferably, such a Zweiwalzengießeinrichtung for production a steel strip with a small thickness, in particular in a thickness range of 1.0 mm to 10 mm used.

Die Zentralkomponente einer Zweiwalzengießanlage ist von zwei gegensinnig rotierenden Gießwalzen mit parallel zueinander angeordneten Gießwalzenachsen und zwei an den gegenüberliegenden Stirnseiten der Gießwalzen anliegenden Seitenplatten gebildet. Der Abstand der beiden Gießwalzenachsen zueinander ist so eingestellt, dass die Mantelflächen der Gießwalzen einen im wesentlichen parallelen Gießspalt bilden, der der Gießdicke des zu gießenden Metallbandes entspricht Die Mantelflächen der zusammenwirkenden Gießwalzen und die beiden Stirnseiten der Seitenplatten bilden einen in Umfangsrichtung geschlossenen Raum für die Aufnahme der Metallschmelze, die über einem Zufluss zugeleitet wird, an den gekühlten Mantelflächen der Gießwalzen erstarrt und in Form eines zumindest weitgehend durcherstarrten Metallbandes aus dem Gießspalt ausgefördert wird. Eine Anlage dieser Bauart und Funktion ist beispielsweise aus der WO 98/04369 bereits bekanntThe central component of a two-roll caster is of two counter-rotating Casting rolls with parallel arranged casting roll axes and two at the formed opposite end faces of the casting rolls adjacent side plates. Of the Distance between the two Gießwalzenachsen each other is adjusted so that the lateral surfaces the casting rolls form a substantially parallel casting gap, the casting thickness of the casting metal strip corresponds to the lateral surfaces of the cooperating casting rolls and the two end faces of the side plates form a circumferentially closed Space for holding the molten metal, which is fed via an inflow, to the cooled shell surfaces of the casting rolls solidified and in the form of at least a large extent durcherstarrten metal strip is discharged from the casting gap. A plant of this Type and function is already known for example from WO 98/04369

Die Stirnseiten der Gießwalzen liegen mit geringer Toleranz in parallelen Ebenen. Die an den Stirnseiten der Gießwalzen anliegenden Seitenplatten bestehen aus feuerfestem Material und sind in einem Tragrahmen eingebettet, der Teil eines Seitenplattenmanipulators oder einer Stütz- und Tragvorrichtungen für die Seitenplatten ist Derartige Einrichtungen sind in vielen Ausfühnsngsformen, wie beispielsweise aus der EP-A 714 715 oder der EP-B 620 061 bekanntThe faces of the casting rolls lie with low tolerance in parallel planes. The on The end faces of the casting rolls adjacent side plates are made of refractory Material and are embedded in a support frame, the part of a Seitenplattenmanipulators or a supporting and supporting device for the side plates is such devices are in many Ausfühnsngsformen, such as from EP-A 714 715 or EP-B 620,061 known

Die aus feuerfestem Material hergestellten Seitenplatten werden gegen die Stirnseiten der Gießwalzen mit vorgegebenem Druck angepresst, um ein dichtes Anliegen an diesen Stirnseiten sicherzustellen. Die Seitenplatten sind hohen und örtlich unterschiedlichen mechanischen und thermischen Belastungen ausgesetzt. Im Schmelzenpool und im Bereich des Gießspaltes besteht ein direkter Kontakt mit der Metattschmetze und damit ein erheblicher thermischer bzw, chemischer Verschleiß; im Bereich der Kontaktfläche von Seitenplatten und Stirnseiten der Gießwalzen kommt es vorwiegend zu mechanischer Abnützung durch die Relativbewegung der Bauteile unter Druck und erhöhter Temperatur. Um den Gesamtverschleiß zu minimieren und die Lebensdauer der Seitenplatten zu erhöhen, sind bereits Lösungen bekannt, bei denen die Seitenplatten entsprechend den örtliche Beanspruchungen aus verschiedenen Materalien gefertigt sind (WO 98/04369).The side panels made of refractory material are against the front sides of the Casting rollers pressed with predetermined pressure to a close concern to this To ensure end faces. The side panels are tall and locally different exposed to mechanical and thermal loads. In the melting pool and in the area of the Gießspaltes there is a direct contact with the Metattschmetze and thus considerable thermal or chemical wear; in the area of the contact surface of Side plates and end faces of the casting rolls are predominantly more mechanical Wear by the relative movement of the components under pressure and elevated temperature. To minimize the overall wear and increase the life of the side plates are already known solutions in which the side plates according to the local stresses are made of different materials (WO 98/04369).

Zur Kompensation des Verschleißes und zur Aufrechterhaltung eines dichten Anliegens werden die Seitenplatten nach dem Stand der Technik gegen die Gießwalzenoberfläche gepresst oder kontinuierlich in Richtung auf die Gießwalzenmantelfläche zubewegt.To compensate for wear and maintain a tight fit For example, the prior art side plates will bear against the casting roll surface pressed or continuously moved toward the casting roll shell surface.

Bei der gattungsbildenden Ausführungsform einer Zweiwalzengießeinrichtung, wie sie beispielsweise aus der EP-A 714 715 oder der EP-B 620 061 bekannt ist, werden stimseitig an die Gießwalzen angestellte Seitenplatten laufend unter Anpressdruck gehalten. In Abhängigkeit vom eingestellten Anpressdruck und der Gießgeschwindigkeit kommt es zu einer kontinuierlichen Abnützung der Seitenplatten über den Produktionszyklus, der die erreichbare Gießdauer limitiert. Ein weiterer unangenehmer, prozesstechnischer Nebeneffekt dieser Anordnung ist die Entwicklung von Verschleißmarken an der Kontaktfläche zwischen Seitenplatten und erstarrter Bandschale.In the generic embodiment of a Zweiwalzengießeinrichtung, as they For example, from EP-A 714 715 or EP-B 620 061 is known, are end face On the casting rollers employed side plates kept under constant pressure. In Depending on the set contact pressure and the casting speed it comes to a continuous wear of the side plates over the production cycle, which the achievable casting time limited. Another unpleasant, procedural side effect This arrangement is the development of wear marks at the contact surface between Side plates and solidified band shell.

Demgegenüber ist es aus der EP-B 285 963 oder der EP-B 380 698 für eine andere Anordnung von Gießwalzen und Seitenplatten bekannt, die feuerfesten Seitenplatten über einen Teilbereich ihrer Dicke auf einem schmalen Randstreifen der Gießwalzen aufzusetzen und die Seitenplatte während des Gießvorganges mit einer vorgegebenen Vorschubgeschwindigkeit in Richtung zum Gießspalt zu bewegen. Gemäß der beschriebenen konstruktiven Lösungen sind die Seitenplatten auf einer Trägerplatte fixiert oder in einem Rahmen geführt und werden durch einen Spindeltrieb, eine Zahnstange oder ähnliche mechanische Mittel gegen die Gießwalzen bewegt. Die Gießwalzen sind stimseitig mit Verschleißscheiben belegt, die für ein entsprechendes Abriebverhalten sorgen, ohne dass die teuren Gießwalzen selbst einem Verschleiß durch die Seitenplatten unterliegen. Einerseits wirken sich die umlaufenden Kontaktrillen zwischen Verschleißscheiben und Seitenplatten wegen der unterschiedlichen Temperatur der beiden Bauteile negativ auf die Bandkantenbildung aus, andererseits ist durch die ausschließlich mechanische Vertikalführung der Seitenplatten die stimseitige Abdichtung des Schmelzenraumes nicht ausreichend gewährleistet. In contrast, it is from EP-B 285 963 or EP-B 380 698 for another Arrangement of casting rolls and side plates known, the refractory side plates over to place a portion of its thickness on a narrow edge strip of the casting rolls and the side plate during the casting process with a predetermined Feed rate to move toward the casting gap. According to the described constructive solutions, the side plates are fixed to a support plate or in a frame and are guided by a spindle drive, a rack or similar mechanical means moves against the casting rolls. The casting rolls are at the end covered with wear discs, which ensure a corresponding abrasion behavior, without that the expensive casting rolls themselves are subject to wear by the side plates. On the one hand, the circumferential contact grooves between wear disks and Side plates negative because of the different temperature of the two components Band edge formation, on the other hand is due to the exclusively mechanical Vertical guidance of the side plates does not interfacial seal the melting chamber sufficiently ensured.

Aufgabe der vorliegenden Erfindung ist es daher, diese Nachteile des Standes der Technik zu vermeiden und ein Verfahren zur Erzeugung eines Metallbandes in einer Zweiwalzengießeinrichtung und die hierzu notwendige Zweiwalzengießeinrichtung vorzuschlagen, wobei sowohl zu Gießbeginn eine vollständige Abdichtung des Schmelzenraumes gewährleistet wird, gleichermaßen wie beim Durchgang von parasitären Erstarrungen durch den Gießspalt. Weiters soll der horizontale Verschleiß der Seitenplatten an der Kontaktfläche mit den Gießwalzen-Stimseiten gleichermaßen verringert werden, wie der Verschleiß in der Kontaktfläche der Seitenplatten mit den erstarrten Bandschalen und gleichzeitig eine bessere Bandkantenqualität beim Austritt aus dem Gießspalt erreicht werden.Object of the present invention is therefore to overcome these disadvantages of the prior art to avoid and a method of producing a metal strip in one Zweiwalzengießeinrichtung and the necessary Zweiwalzengießeinrichtung Propose, both at the start of casting a complete seal of the Melting chamber is ensured, as well as the passage of parasitic Solidification through the casting gap. Furthermore, the horizontal wear of the side plates at the contact surface with the casting-roll ends are reduced as well as the wear in the contact surface of the side plates with the solidified band shells and at the same time achieves a better strip edge quality when exiting the casting gap become.

Diese Aufgabe wird bei einem Verfahren der gattungsgemäßen Art dadurch erreicht, dass die Seitenplatten in einem ersten Zeitintervall in einer ersten Bewegungsrichtung parallel zu den Gießwalzenachsen gegen die Stirnseiten der Gießwalzen bewegt werden und dass die Seitenplatten in einem zweiten Zeitintervall in einer zweiten Bewegungsrichtung parallel zur Gießrichtung im Gießspalt gegen einen Abschnitt der Mantelflächen der Gießwalzen bewegt werden.This object is achieved in a method of the generic type characterized that the side plates in a first time interval in a first direction of movement be moved parallel to the Gießwalzenachsen against the end faces of the casting rolls and that the side plates in a second time interval in a second Direction of movement parallel to the casting direction in the casting gap against a portion of The lateral surfaces of the casting rolls are moved.

Durch die Kombination von horizontaler Bewegung der Seitenplatten in Richtung der Gießwalzenachsen und vertikaler Bewegung der Seitenplatten in Gießrichtung wird durch den Abrieb eine Stufe in der Seitenplatte erzeugt, die sowohl eine stimseitige als auch eine umfangsseitige Dichtfläche und damit Abdichtung ermöglicht. Durch entsprechende Kombination der beiden Bewegungen werden beide Dichtflächen kontinuierlich oder in Zeitintervallen erneuert.By combining horizontal movement of the side plates in the direction of Gießwalzenachsen and vertical movement of the side plates in the casting direction is through the abrasion creates a step in the side plate, which both an end face as well as a circumferential sealing surface and thus sealing allows. By appropriate Combining the two movements, both sealing surfaces are continuous or in Renewed time intervals.

Dies wird zweckmäßig dadurch erreicht, dass in zeitlicher Abfolge das erste Zeitintervall zumindest in einem Teilabschnitt das zweite Zeitintervall überlagert.This is expediently achieved in that, in chronological order, the first time interval superimposed on the second time interval at least in one subsection.

Dies kann aber auch dadurch erreicht werden, dass in zeitlicher Abfolge das zweite Zeitintervall zumindest in einem Teilabschnitt das erste Zeitintervall Überlagert.But this can also be achieved in that in chronological order the second Time interval superimposed on the first time interval at least in a subsection.

Nach einer bevorzugten Ausführungsform beginnt das erste Zeitintervall vor dem zweiten Zeitintervall. Somit wird die Abdichtung des Schmelzenraumes dadurch erreicht, dass im ersten Zeitintervall eine Vorschubbewegung der Seitenplatten in Richtung der Gießwalzenachsen erfolgt und so ein Einschleifen der Seitenplatten an den Stirnseiten der Gießwalzen erfolgt und erst dazu zeitversetzt durch eine Vertikalbewegung in Gießrichtung ein Einschleifen der Seitenplatten an der Mantelfläche der Gießwalzen in einem Maße erfolgt, das dem jeweiligen Verschleiß durch die Bewegung der Seitenplatten in Richtung der Gießwalzenachsen entspricht.In a preferred embodiment, the first time interval begins before the second Time interval. Thus, the sealing of the melt space is achieved in that first time interval, an advancing movement of the side plates in the direction of Gießwalzenachsen takes place and so a grinding of the side plates on the front sides of the Casting takes place and only delayed by a vertical movement in the casting direction a grinding of the side plates on the lateral surface of the casting rolls to an extent takes place, which the respective wear by the movement of the side plates in the direction of Gießwalzenachsen corresponds.

Das erste Zeitintervall beginnt mit dem Zuführen der Metallschmelze in den Schmelzenraum oder vorher. Ein gewisser zeitlicher Vorlauf ermöglicht die Überbrückung von fertigungs- oder montagebedingten Schiefstellungen der Seitenplatten sowie fertigungs- oder thermisch bedingten Verformungen der Seitenplatten und den daraus resultierenden Spalten zwischen Gießwalzen und Seitenplatten durch den Einschleifvorgang.The first time interval begins with the feeding of the molten metal into the melting space or before. A certain amount of time advance allows the bridging of production or mounting-related inclinations of the side plates as well as production or thermal conditional deformations of the side plates and the resulting gaps between Casting rollers and side plates through the grinding process.

Die Werkstoffe für die Seitenplatten müssen eine hohe thermische Belastbarkeit, eine hohe Thermoschockbeständigkeit, eine hohe Abriebfestigkeit bei Kontakt mit der Metallschmelze und der Gießwalzenoberfläche, sowie Resistenz gegen chemische Erosion und Korrosion aufweisen. Derartige Werkstoffe bestehen aus einem Stoffgemisch aus mehreren Komponenten feuerfester Grundwerkstoffe, wie SiO2, Al2O3, BN, Si3N4, ZrO2, Graphit etc. Die Seitenplatten werden in Abhängigkeit von den Verschleißeigenschaften des verwendeten Feuerfest-Materials gegen die Gießwalzen bewegt. Die Seitenplatten sind einteilig ausgebildet. Sofern sie abschnittsweise unterschiedliche Materialien enthalten, um den Kontakt mit der Gießwalze und der Metallschmelze optimal zu entsprechen, sind diese Seitenplattenteile in einem gemeinsamen Tragrahmen zu einem gemeinsam bewegbaren Bauteil zusammengefügt.The materials for the side plates must have high thermal endurance, high thermal shock resistance, high abrasion resistance on contact with molten metal and casting surface, resistance to chemical erosion and corrosion. Such materials consist of a mixture of several components of refractory base materials, such as SiO 2 , Al 2 O 3 , BN, Si 3 N 4 , ZrO 2 , graphite, etc. The side plates are depending on the wear characteristics of the refractory material used against the casting rolls emotional. The side plates are integrally formed. If they contain sections of different materials in order to optimally correspond to the contact with the casting roll and the molten metal, these side plate parts are joined together in a common support frame to form a jointly movable component.

Nach einer zweckmäßigen Ausführungsform wird das erste Zeitintervall von drei Abschnitten gebildet und zwar von

  • einer Startphase, bei der die Seitenplatten während einer Zeitspanne von maximal 90 sec mit einer Vorschubgeschwindigkeit, die einem Materialverschleiß an den Seitenplatten von weniger als 50 mm/h, vorzugsweise von 1 mm/h bis 30 mm/h entspricht, gegen die Stirnseiten der Gießwalzen bewegt werden,
  • einer Übergangsphase, bei der die Seitenplatten während einer Zeitspanne von maximal 3 min mit einer Vorschubgeschwindigkeit, die einem Materialverschleiß an den Seitenplatten von weniger als 20 mm/h entspricht, gegen die Stirnseiten der Gießwalzen bewegt werden und
  • einer stationären Betriebsphase, bei der die Seitenplatten mit einer Vorschubgeschwindigkeit, die einem Materialverschleiß an den Seitenplatten zwischen 0,2 mm/h und 4 mm/h entspricht, gegen die Stirnseiten der Gießwalzen bewegt werden.
Somit werden bei diesem Verfahren innerhalb bestimmter Zeitintervalle vorgegebene Verschleißraten an den Seitenplatten durch Steuerung oder Regelung der Vorschubgeschwindigkeit in Richtung der Gießwalzenachsen erzielt und auf diese Weise ein problemloses Anfahren der Zweiwalzengießanlage ermöglicht.According to an expedient embodiment, the first time interval is formed by three sections, namely
  • a starting phase in which the side plates, for a maximum of 90 seconds, at a feed rate corresponding to a wear on the side plates of less than 50 mm / h, preferably from 1 mm / h to 30 mm / h, against the end faces of the casting rolls to be moved
  • a transitional phase in which the side plates are moved against the end faces of the casting rolls for a maximum of 3 minutes at a feed rate corresponding to a wear on the side plates of less than 20 mm / h, and
  • a stationary operating phase in which the side plates are moved against the end faces of the casting rolls at a feed rate which corresponds to a material wear on the side plates between 0.2 mm / h and 4 mm / h.
Thus, in this method predetermined wear rates are achieved on the side plates by controlling or regulating the feed rate in the direction of the casting roll axes within certain time intervals and in this way allows easy start-up of the two-roll caster.

Nach einer weiteren zweckmäßigen Ausführungsform wird das erste Zeitintervall von drei Abschnitten gebildet und zwar von

  • einer Startphase, bei der die Seitenplatten während einer Zeitspanne von maximal 90 sec mit einem Anpressdruck, der einem Materialverschleiß an den Seitenplatten von weniger als 50 mm/h, vorzugsweise von 1 mm/h bis 30 mm/h entspricht, gegen die Stirnseiten der Gießwalzen gepresst werden,
  • einer Übergangsphase, bei der die Seitenplatten während einer Zeitspanne von maximal 3 min mit einem Anpressdruck, der einem Materialverschleiß an den Seitenplatten von weniger als 20 mm/h entspricht, gegen die Stirnseiten der Gießwalzen gepresst werden und
  • einer stationären Betriebsphase, bei der die Seitenplatten mit einem Anpressdruck, der einem Materialverschleiß an den Seitenplatten zwischen 0,2 mm/h und 4 mm/h entspricht, gegen die Stirnseiten der Gießwalzen gepresst werden.
Bei beiden alternativen Verfahren werden innerhalb bestimmter Zeitintervalle vorgegebene Verschleißraten an den Seitenplatten durch Steuerung oder Regelung des Anpressdruckes in Richtung der Gießwalzenachsen erzielt und auf diese Weise ein problemloses Anfahren der Zweiwalzengießanlage ermöglicht.According to a further expedient embodiment, the first time interval is formed by three sections and that of
  • a starting phase in which the side plates for a period of up to 90 seconds with a contact pressure corresponding to a material wear on the side plates of less than 50 mm / h, preferably from 1 mm / h to 30 mm / h, against the end faces of the casting rolls be pressed
  • a transitional phase in which the side plates are pressed against the faces of the casting rolls for a maximum of 3 minutes with a contact pressure equal to a wear on the side plates of less than 20 mm / h, and
  • a stationary operating phase in which the side plates are pressed against the end faces of the casting rolls with a contact pressure corresponding to a material wear on the side plates between 0.2 mm / h and 4 mm / h.
In both alternative methods predetermined wear rates are achieved on the side plates by controlling or regulating the contact pressure in the direction of the casting roll axes within certain time intervals and in this way allows easy start-up of the two-roll caster.

Bei beiden Varianten beginnt das zweite Zeitintervall spätestens 30 min, vorzugsweise bereits 10 min nach Beginn des ersten Zeitintervalls. Um den Vorteil der zweiseitigen, sowohl stirnseitigen als auch umfangsseitigen Abdichtung des Raumes für die Schmelzenaufnahme weitgehend zu nutzen, beginnt das zweite Zeitintervall im wesentlichen mit Beginn der stationären Betriebsphase.In both variants, the second time interval begins at the latest 30 minutes, preferably already 10 minutes after the beginning of the first time interval. To take advantage of the two-sided, Both frontal and peripheral sealing of the room for the To use melt intake largely, the second time interval essentially begins with the beginning of the stationary operating phase.

Analog zu den beiden oben beschriebenen Verfahrensweisen für das erste Zeitintervall ist gleichermaßen für das zweite Zeitintervall vorgesehen, dass die Seitenplatten während dieses zweiten Zeitintervalls mit einer Vorschubgeschwindigkeit, die einem Materialverschleiß an den Seitenplatten von 2 mm/h bis 20 mm/h, vorzugsweise 4,0 bis 10mm/h, entspricht, gegen einen Abschnitt der Mantelfläche der Gießwalzen bewegt wird, oder dass die Seitenplatten während des zweiten Zeitintervalls mit einem Anpressdruck, der einem Materialverschleiß an den Seitenplatten von 2 mm/h bis 20 mm/h, vorzugsweise 4,0 bis 10mm/h, entspricht, gegen einen Abschnitt der Mantelfläche der Gießwalzen gepresst werden. Analogous to the two procedures described above for the first time interval equally provided for the second time interval that the side plates during This second time interval with a feed rate, the one Material wear on the side plates from 2 mm / h to 20 mm / h, preferably 4.0 to 10mm / h, is moved against a portion of the lateral surface of the casting rolls, or that the side plates during the second time interval with a contact pressure, the a material wear on the side plates of 2 mm / h to 20 mm / h, preferably 4.0 to 10mm / h corresponds to pressed against a portion of the lateral surface of the casting rolls become.

Die in die Seitenplatten eingeschtiffenen Dichtflächen werden während des laufenden Gießbetriebes allmählich beschädigt und durch Erosion und Korrosion abgebaut, sodass es für die Erzeugung eines einwandfreien Metallbandes ausreicht, wenn die Seitenplatten während des zweiten Zeitintervalls intermittierend bewegt werden, wobei Bewegungsphasen und Stillstandsphasen einander abwechseln und die Stillstandphasen der Seitenplatten 30 min, vorzugsweise 5 min, nicht überschreiten. Hierbei ist es ausreichend, wenn die Seitenplatten während jeder Bewegungsphase um 0,01 bis 2,0 mm, vorzugsweise 0,1 bis 1,0 mm, gegen einen Abschnitt der Mantelfläche der Gießwalzen bewegt werden.The enclosed in the side plates sealing surfaces are during the current Casting gradually damaged and degraded by erosion and corrosion, so it sufficient for the production of a perfect metal strip when the side plates be moved intermittently during the second time interval, with movement phases and stoppage phases alternate and the stoppage phases of the side plates 30 min, preferably 5 min, not exceed. It is sufficient if the Side plates during each movement phase by 0.01 to 2.0 mm, preferably 0.1 to 1.0 mm, are moved against a portion of the lateral surface of the casting rolls.

Nach dem Einsetzen einer neuen feuerfesten Seitenplatte in die Seitenplatten-Tragvorrichtung oder den Seitenplatten-Manipulator ist es vorteilhaft, wenn dem ersten Zeitintervall eine Einschleifphase unmittelbar vorgeordnet wird, bei der die Seitenplatten während einer Zeitspanne von maximal 120 sec mit einer Vorschubgeschwindigkeit oder einem Anpressdruck, die/der einem mittleren Materialverschleiß an den Seitenplatten von mindestens 10 mm/h, vorzugsweise mindestens 20 mm/h, entspricht, gegen die Stirnseiten der Gießwalzen gepresst werden. Die Ausbildung der Dichtflächen an den Seitenplatten wird günstig beeinflusst, wenn die Seitenplatten während eines Teilabschnittes dieser Einschleifphase gegebenenfalls zusätzlich mit hohem Anpressdruck in Gießrichtung gegen einen Abschnitt der Mantelflächen der Gießwalzen gepresst werden.After inserting a new refractory side plate into the side panel support or the side panel manipulator, it is advantageous if the first Time interval a Einschleifphase is arranged directly upstream, in which the side plates during a period of maximum 120 sec with a feed rate or a contact pressure, the / a medium material wear on the side plates of at least 10 mm / h, preferably at least 20 mm / h, corresponds to the end faces the casting rolls are pressed. The formation of the sealing surfaces on the side plates is favorably influenced if the side plates during a subsection of this Einschleifphase possibly additionally with high contact pressure in the casting direction against a portion of the lateral surfaces of the casting rolls are pressed.

Eine zweckmäßig Vorbereitungsphase, um die Seitenplatten für den Gießvorgang vorzubereiten, besteht auch darin, dass dem ersten Zeitintervall eine Einschleifphase vorgeordnet wird, bei der ein mittlerer horizontaler Materialverschleiß an den Seitenplatten von mindestens 0,3 mm erzielt wird, wobei diese Einschleifphase bei kalten oder vorgeheizten Seitenplatten erfolgt und gegebenenfalls zwischen dieser Einschleifphase und dem Beginn des ersten Zeitintervalls eine Zwischenerhitzung erfolgt Zu diesem Zweck sind an der Rückseite der Seitenplatten Heizeinrichtungen vorgesehen, die von Gasbrennern oder elektrischen Heizeinrichtungen, wie Induktionsheizungen etc. gebildet werden können.A convenient preparation phase to the side plates for the casting process It also consists in the fact that the first time interval a Einschleifphase preceded by a mean horizontal material wear on the side plates is achieved by at least 0.3 mm, this grinding phase in cold or preheated side plates and, where appropriate, between this Einschleifphase and Intermediate heating takes place at the beginning of the first time interval for this purpose at the back of the side plates heaters provided by gas burners or electric heaters, such as induction heaters, etc. may be formed.

Die eingangs gestellte Aufgabe wird mit einer Zweiwalzengießeinrichtung mit zwei parallel angeordneten Gießwalzen und zwei an den Stirnseiten der Gießwalzen anliegenden und in Seitenplatte-Tragvorrichtungen abgestützten Seitenplatten dadurch gelöst,

  • dass jede Seitenplatten-Trageinrichtung Horizontalführungen für die Umsetzung einer Vorschubbewegung der Seitenplatte in Richtung der Gießwalzenachsen aufweist,
  • dass jeder Seitenplatten-Trageinrichtung eine Horizontalverstelleinrichtung für die horizontale Verlagerung der Seitenplatte und eine Positionserfassungseinrichtung für die Horizontalposition der Seitenplatte zugeordnet ist,
  • dass jede Seitenplatten-Trageinrichtung Vertikalführungen für die Umsetzung einer Vorschubbewegung der Seitenplatte in Gießrichtung, bezogen auf den Gießspalt, autweist,
  • dass jeder Seitenplatten-Trageinrichtung eine Vertikalverstelleinrichtung für die vertikale Verlagerung der Seitenplatte und eine Positionserfassungseinrichtung für die Vertikalposition der Seitenplatte zugeordnet ist,
  • dass eine Recheneinheit über Signaileitungen mit den Horizontalverstelleinrichtungen, den Vertikalverstelleinrichtungen und den Positionserfassungseinrichtungen zur Übermittlung von Mess- und Steuersignalen verbunden ist.
The object stated in the introduction is achieved with a two-roll casting device with two casting rolls arranged in parallel and two side plates bearing against the end faces of the casting rolls and supported in side-plate carrying devices,
  • in that each side plate support device has horizontal guides for the implementation of a feed movement of the side plate in the direction of the casting roller axes,
  • in that each side plate support device is associated with a horizontal displacement device for the horizontal displacement of the side plate and a position detection device for the horizontal position of the side plate,
  • each side plate support device comprises vertical guides for the implementation of a feed movement of the side plate in the casting direction with respect to the casting gap,
  • in that each side plate support device is associated with a vertical displacement device for the vertical displacement of the side plate and a position detection device for the vertical position of the side plate,
  • a computing unit is connected via signal lines to the horizontal adjustment devices, the vertical adjustment devices and the position detection devices for the transmission of measurement and control signals.

Die Begriffe "horizontal" und "vertikal" sind hierbei als Richtungsangaben keinesfalls ausschließlich in Beziehung zur Schwerkraftwirkung auszulegen. Der Begriff "horizontal" orientiert sich an den parallelen Gießviralzenachsen und deren Längserstreckung. Der Begriff "vertikal" orientiert sich an der Gießrichtung in der engsten Stelle des von den Gießwalzen gebildeten Gießspaltes (kissing point). Je nach Lage der Gießwalzen zueinander sind daher von der Wirkrichtung der Schwerkraft abweichende Richtungen möglich.
Bei Zugrundelegung entsprechender Prozessmodelle ermöglicht dieser Anlagenaufbau einen prozessgesteuerten Ablauf der Seitenplattenanstellung entsprechend einem vorgebenen Ablaufplan unter Berücksichtigung von Eingangsbedingungen, wie Stahlqualitäten, Schmelzen- und Überhitzungstemperatur, Gießdicke, Gießgeschwindigkeit, Seitenplattenwerkstoffe etc., sowie die Berücksichtigung von aktuellen Störungen im Produktionsprozess, wie unregelmäßigen Seitenplattenverschleiß, Änderungen der Gießgeschwindigkeit und ähnlichem.
The terms "horizontal" and "vertical" are in this case interpreted as directional information under no circumstances exclusively in relation to the effect of gravity. The term "horizontal" is based on the parallel Gießviralzenachsen and their longitudinal extent. The term "vertical" is based on the casting direction in the narrowest point of the casting gap formed by the casting rolls (kissing point). Depending on the position of the casting rolls to each other therefore deviating from the effective direction of gravity directions are possible.
On the basis of appropriate process models, this plant construction allows a process-controlled operation of the Seitenplattenanstellung according to a given schedule under consideration of input conditions, such as steel grades, melting and superheating temperature, casting thickness, casting speed, side plate materials, etc., as well as the consideration of current disturbances in the production process, such as irregular side plate wear, Changes in casting speed and the like.

Eine zweckmäßige Ausgestaltung der Zweiwalzengießeinrichtung besteht darin, dass den Horizontalverstelleinrichtungen und den Vertikalverstelleinrichtungen einzelne Anpressdruck-Messeinrichtungen zur Ermittlung des Anpressdruckes der Seitenplatten an die Gießwalzen in horizontaler und vertikaler Richtung zugeordnet sind und die Horizontalverstelleinrichtungen und Vertikalverstelleinrichtungen über Signalleitungen mit der Recheneinheit verbunden sind. Die Druckmessung ermöglicht Rückschlüsse auf den aktuellen Seitenplattenverschleiß und liefert Messdaten als Basis für eine kontinuierliche Verbesserung des erfindungsgemäßen Anfahrverfahrens, insbesondere bei Einbindung von selbstlemenden Systemen und neuronalen Netzwerken in das Regel- und Leitsystem der Anlage. An expedient embodiment of the Zweiwalzengießeinrichtung is that the Horizontal adjustment and the Vertikalverstelleinrichtungen single contact pressure measuring devices for determining the contact pressure of the side plates to the casting rolls are assigned in horizontal and vertical direction and the Horizontal adjustment and Vertikalverstelleinrichtungen via signal lines with the arithmetic unit are connected. The pressure measurement allows conclusions about the current side plate wear and provides measurement data as the basis for a continuous Improvement of the start-up method according to the invention, in particular when incorporating Self-learning systems and neural networks in the control system of the Investment.

Zweckmäßig ist die Recheneinheit als Einzelregelkreis ausgebildet, der ein Anlagenleitsystem übergeordnet ist. Damit können speziell variable Einflussgrößen aus anderen Anlagenkomponenten für diesen Einzelregelkreis berücksichtigt werden.Suitably, the arithmetic unit is designed as a single control loop, the one Is superior to the plant control system. This allows especially variable influencing variables other system components for this single control loop are considered.

Eine konstruktiv einfache Ausgestaltung und systematische Strukturierung der Seitenplatten-Trageinrichtung besteht darin, dass die Seitenplatten-Trageinrichtung von einem anlagenfesten Basisrahmen, einem Verstellrahmen und einem Tragrahmen gebildet ist, wobei der Verstellrahmen über Horizontalführungen am Basisrahmen und der Tragrahmen für die Seitenplatte über Vertikalführungen am Verstellrahmen abgestützt sind und die Horizontalverstelleinrichtung zwischen Basisrahmen und Verstellrahmen und die Vertikalverstelleinrichtung zwischen Verstellrahmen und Tragrahmen für die Seitenplatte angeordnet sind.A structurally simple embodiment and systematic structuring of the side plate support device is that the side plate support of a fixed base frame, an adjustment frame and a support frame is formed, wherein the adjustment frame via horizontal guides on the base frame and the support frame are supported for vertical side guides on the adjustment frame and the Horizontal adjustment between base frame and adjusting frame and the Vertical adjustment between adjustment frame and support frame for the side plate are arranged.

Zur Vorheizung der Seitenplatten ist jeder Seitenplatte eine Aufheizeinrichtung zugeordnet, die von Gasbrennern oder elektrischen Heizeinrichtungen gebildet und an der Rückseite der Seitenplatten angeordnet ist.For preheating the side plates of each side plate is associated with a heating device, which is formed by gas burners or electric heaters and at the back of the Side plates is arranged.

Weitere Vorteile und Merkmale der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung nicht einschränkender Ausführungsbeispiele, wobei auf die beiliegenden Figuren Bezug genommen wird, die folgendes zeigen:

Fig. 1
eine Zweiwalzengießanlage zur Anwendung des erfindungsgemäßen Verfahrens,
Fig. 2
einen Vertikalschnitt durch die Zweiwalzengießanalge nach Fig. 1,
Fig. 3
die Position und den Zustand der Seitenplatte kurz nach Beginn des ersten Zeitintervalls in einem horizontal gelegten Teilschnitt durch die Zweiwalzengießanlagen entlang der Linie A - A in Fig. 2,
Fig. 4
die Position und den Zustand der Seitenplatte während des Gießprozesses in einer fortgeschrittenen Phase des ersten oder zweiten Zeitintervalls in einem horizontal gelegten Teilschnitt durch die Zweiwalzengießanlagen entlang der Linie A - A in Fig. 2,
Fig. 5
schematische Darstellung einer Seitenplatten-Tragvorrichtung,
Fig. 6
Ausführungsbeispiel für den zeitlichen Verlauf der Anstellbewegungen der Seitenplatten und des Seitenplattenverschleißes,
Fig.7
Regelschema für die erfindungsgemäße Seitenplattenanstellung.
Further advantages and features of the present invention will become apparent from the following description of non-limiting embodiments, reference being made to the attached figures, which show:
Fig. 1
a two-roll caster for the application of the method according to the invention,
Fig. 2
a vertical section through the Zweiwalzengießanalge of Fig. 1,
Fig. 3
the position and the state of the side plate shortly after the beginning of the first time interval in a horizontally placed partial section through the Zweiwalzengießanlagen along the line A - A in Fig. 2,
Fig. 4
the position and the state of the side plate during the casting process in an advanced phase of the first or second time interval in a horizontally placed partial section through the Zweiwalzengießanlagen along the line A - A in Fig. 2,
Fig. 5
schematic representation of a side plate support device,
Fig. 6
Embodiment for the time course of the adjustment movements of the side plates and the side plate wear,
Figure 7
Control scheme for the invention Seitenplattenanstellung.

Eine für die Durchführung des erfindungsgemäßen Verfahrens geeignete Kemeinrichtung einer Zweiwalzengießanlage 1, wie sie schematisch in Fig. 1 dargestellt ist, besteht aus zwei innengekühlten, angetriebenen Gießwalzen 2, 3, die um parallele Gießwalzenachsen 4, 5 gegensinnig rotieren und aus zwei aus feuerfestem Material hergestellte Seitenplatten 6, 7, die jeweils in einem Tragrahmen 8, 9 eingebettet bzw. an ihm befestigt sind. Die Mantelflächen 10, 11 der Gießwalzen 2, 3 und die Stirnseiten 12, 13 der Seitenplatten 6, 7 bilden gemeinsamen einen in Umfangsrichtung geschlossenen Schmelzenpool 14, der die durch ein Tauchgießrohr 15 zugeführte überhitzte Metallschmelze 16 aufnimmt. Zur Vermeidung von Leckagen oder dem Eindringen von Metallschmelze in Spalten zwischen Seitenplatten und Gießwalzen sind die Seitenplatten 6, 7 gegen die Stirnseiten 17, 18 der Gießwalzen 2, 3 angestellt.A Kemeinrichtung suitable for carrying out the method according to the invention a two-roll caster 1, as shown schematically in Fig. 1, consists of two internally cooled, driven casting rolls 2, 3, which are parallel to casting roll axes 4, 5 rotate in opposite directions and made of two made of refractory material side plates 6, 7, each embedded in a support frame 8, 9 and secured thereto. The Lateral surfaces 10, 11 of the casting rolls 2, 3 and the end faces 12, 13 of the side plates 6, 7 Together form a closed in the circumferential direction melt pool 14, the supplied by a Tauchgießrohr 15 superheated molten metal 16 receives. to Avoidance of leaks or infiltration of molten metal into gaps between Side plates and casting rolls are the side plates 6, 7 against the end faces 17, 18 of the Casting rollers 2, 3 employed.

Die Gießwalze 2 ist in einem nicht dargestellten Traggerüst über Traglager ortsfest drehbar abgestützt Die Gießwalze 3 ist in dem nicht dargestellten Traggerüst gegenüber der ersten Gießwalze 2 parallel verlagerbar abgestützt, wie durch den Doppelpfeil angedeutet. Dadurch ist an der engsten Stelle zwischen den beiden Gießwalzen 2, 3 ein wählbarer Gießspalt 19 einstellbar, der der Dicke 20 des gegossenen Metallbandes 21 entspricht (Fig.2). Die aus einem Zwischengefäß 22 über das Tauchgießrohr 15 in den Schmelzenpool 14 eingebrachte Metallschmelze bildet an den innengekühlten Mantelflächen 10, 11 der Gießwalzen 2, 3 allmählich anwachsende Strangschalen 23, 24 aus, die im Gießspalt 19 zu einem weitgehend durcherstarrten Metallband 21 zusammengeführt und durch die Rotation der Gießwalzen aus dem Gießspalt ausgefördert werden. Der Weitertransport des gegossenen Bandes erfolgt durch ein Treibrollenpaar 25.The casting roll 2 is rotatably fixed in a supporting frame, not shown, via supporting bearings supported The casting roll 3 is in the support frame, not shown, with respect to the first Casting roller 2 supported displaceable parallel, as indicated by the double arrow. Thereby is at the narrowest point between the two casting rolls 2, 3 a selectable casting gap 19th adjustable, which corresponds to the thickness 20 of the cast metal strip 21 (Figure 2). From an intermediate vessel 22 via the Tauchgießrohr 15 introduced into the melt pool 14 Molten metal forms on the internally cooled lateral surfaces 10, 11 of the casting rolls 2, 3 gradually growing strand shells 23, 24, which in the casting gap 19 to a largely solidified metal band 21 merged and by the rotation of the Casting rolls are discharged from the casting gap. The onward transport of the cast Bandes carried by a pair of drive rollers 25th

In Fig. 3 ist die Positionierung einer Seitenplatte 6 an den Stirnseiten 12, 13 der Gießwalzen 2, 3 in einer Anfangsphase des Gießprozesses mit einer neuen Seitenplatte aus feuerfestem Material dargestellt. Der Schmelzenpool 14 ist mit Metallschmelze 16 gefüllt, und an den Mantelflächen 10, 11 der Gießwalzen 2, 3 haben sich Strangschalen 23, 24 ausgebildet Die Seitenplatte 6 wird durch Horizontalkräfte Fh, die am Tragrahmen 8 der Seitenplatte 6 parallel zu den Gießwalzenachsen 4, 5 angreifen, dichtend gegen die Stirnseite 12 der Gießwalze 2 angestellt und in Wirkrichtung der Horizontalkräfte Fh innerhalb eines bestimmten Zeitintervalls Δt1 bewegt. In gleicher Weise wirkt innerhalb eines bestimmten Zeitintervalls Δt2 eine Vertikalkraft Fv in Gießrichtung, mit der die Seitenplatte 6 innerhalb dieses Zeitintervalls auf den Gießspalt 19 zubewegt wird.In Fig. 3, the positioning of a side plate 6 at the end faces 12, 13 of the casting rolls 2, 3 is shown in an initial phase of the casting process with a new side plate made of refractory material. The melt pool 14 is filled with molten metal 16, and strand shells 23, 24 have formed on the lateral surfaces 10, 11 of the casting rolls 2, 3. The side plate 6 is formed by horizontal forces F h on the support frame 8 of the side plate 6 parallel to the casting roll axes 4, Attack 5, sealing against the end face 12 of the casting roll 2 employed and moved in the effective direction of the horizontal forces F h within a certain time interval .DELTA.t 1 . In the same way acts within a certain time interval .DELTA.t 2, a vertical force F v in the casting direction, with which the side plate 6 is moved to the casting gap 19 within this time interval.

Nach einer bestimmten Gießzeit stellt sich an der Seitenplatte 6 ein Zustandsbild ein, das primär durch den von den Anstellbewegungen vorgegebenen Verschleiß des feuerfesten Materials an den Stirnseiten 12, 13 und an den Mantelflächen 10, 11 der Gießwalzen 2, 3 bestimmt ist. Dieses Zustandsbild ist in Fig. 4 dargestellt. Durch die von Horizontalkräften Fh und Vertikalkraft Fv kombinierte Seitenplattenbewegung wird an den Seitenplatten durch den gesteuerten Abrieb feuerfesten Materials eine Stufe 30 erzeugt, die stimseitige Dichtflächen 31, 32 und umfangsseitige Dichtflächen 33, 34 ausbildet. Die Dichtflächen 31, 32, 33, 34 und der in den Schmeizenpool 14 vorragende Teil der Seitenplatten-Stirnseite 12 tragen wesentlich zur Verbesserung der Bandkanten des gegossenen Metallbandes sowie zur Verlängerung der Seitenplattenstandzeit bei. Die der Metallschmelze 16 ausgesetzte Stimfläche 12 der Seitenplatte 6 verschleißt durch systembedingte chemische und mechanische Erosion bzw. Korrosion.After a certain casting time adjusts to the side plate 6, a state image, which is determined primarily by the predetermined by the Anstellbewegungen wear of the refractory material on the end faces 12, 13 and on the lateral surfaces 10, 11 of the casting rolls 2, 3. This state image is shown in FIG. 4. Due to the horizontal forces F h and vertical force F v combined side plate movement of the side plates by the controlled abrasion of refractory material, a step 30 is generated, the end-side sealing surfaces 31, 32 and peripheral sealing surfaces 33, 34 is formed. The sealing surfaces 31, 32, 33, 34 and projecting into the Schmeizenpool 14 part of the side plate end face 12 contribute significantly to the improvement of the strip edges of the cast metal strip and to extend the Seitenplattenstandzeit. The metal surface 16 exposed end face 12 of the side plate 6 wears due to systemic chemical and mechanical erosion or corrosion.

Zur Umsetzung der Anstellbewegungungen der Seitenplatten sind diese in Seitenplatten-Tragvorrichtungen 36 integriert, von denen eine in Fig. 5 schematisch dargestellt ist. Die Seitenplatte 6 ist in einem Tragrahmen 8, Wärmedehnungen zulassend, nachgiebig eingespannt. Um die Seitenplatten auf Betriebstemperatur vorwärmen zu können, sind an der Rückseite der Seitenplatten in einem Freiraum nicht dargestellte Heizeinrichtungen vorgesehen, die entweder von Gasbrennern oder von elektrischen Heizeinrichtungen, wie beispielsweise Induktionsheizeinrichtungen, gebildet sind. Dadurch wird eine plötzliche, örtlich hohe termische Belastung der Seitenplatten herabgesetzt. Der Tragrahmen 8 ist an einem L-förmigen Verstellrahmen 37 entlang von Vertikalführungen 38 in Gießrichtung vertikal geführt und durch eine Vertikalverstelleinrichtung 39 bewegbar, die am Tragrahmen 8 und am Verstellrahmen 37 angelenkt ist. Der Verstellrahmen 37 ist seinerseits auf einem stationären Basisrahmen 40 abgestützt und durch Horizontalführungen 41 gegenüber diesem horizontal in Richtung der Gießwalzenachse 4 verschiebar angeordnet. Die Horizontalverstelleinrichtung 42 ist einerseits am Basisrahmen 40 und andererseits am Versteltrahmen 37 angelenkt. Die Vertikalverstelleinrichtung 39 und die Horizontalverstelleinrichtung 42 ermöglichen eine gesteuerte oder geregelte Anstell- und Rückzugsbewegung der Seitenplatten, die durch verschiedene Stelleinrichtungen realisiert werden können, wie beispielsweise durch Federn. Pneumatiksysteme, Hydrautiksysteme, elektrische, mechanische oder elektromechanische Antriebssysteme oder auch Kombinationen dieser Systeme. Vorzugsweise sind diese Antriebssysteme mit Wegverfolgungseinrichtungen gekoppelt und ermöglichen eine präzise Einstellung von Positionen und Vorschubbewegungen, basierend auf Vorgabewerten, wie Anpressdruck, Vorschubgeschwindigkeit etc., die als Zeitfunktion von einem Steuer-, Regel- oder Leitsystem vorgegeben werden.To implement the adjusting movements of the side plates, these are in side plate support devices 36 integrated, one of which is shown schematically in Fig. 5. The Side plate 6 is in a support frame 8, permitting thermal expansion, yielding clamped. To preheat the side plates to operating temperature are on the back of the side panels in a space not shown heaters provided either by gas burners or by electric heaters, such as For example, induction heaters are formed. This will make a sudden, locally high thermal load of side plates minimized. The support frame 8 is on an L-shaped adjustment frame 37 along vertical guides 38 in the casting direction vertically guided and movable by a Vertikalverstelleinrichtung 39, the support frame 8 and articulated on the adjusting frame 37. The adjusting frame 37 is in turn on a stationary base frame 40 supported and by horizontal guides 41 opposite arranged horizontally in the direction of the casting roll axis 4 verschiebar. The Horizontal adjustment 42 is on the one hand on the base frame 40 and on the other hand on Versteltrahmen 37 hinged. The Vertikalverstelleinrichtung 39 and the Horizontal adjustment 42 allow a controlled or regulated Anstell- and Return movement of the side plates realized by various adjusting devices can be, such as by springs. Pneumatic systems, hydraulic systems, electrical, mechanical or electromechanical drive systems or else Combinations of these systems. Preferably, these drive systems are with Trackers coupled and allow precise adjustment of Positions and feed movements, based on default values, such as contact pressure, Feed rate, etc., as a time function of a control, or Control system can be specified.

Anhand der Fig. 6 sind die einzelnen Verfahrensschritte anschaulich dargestellt und nachfolgend näher erläutert. Über einer Zeitachse t (sec) ist der Verschleiß der Seitenplatten zum einen als Absolutwert und andererseits in mm/h, somit gleichermaßen als augenblickliche Vorschubgeschwindigkeit der Seitenplätten dargestellt.With reference to FIG. 6, the individual process steps are graphically illustrated and explained in more detail below. Over a time axis t (sec) is the wear of Side plates on the one hand as absolute value and on the other hand in mm / h, thus equally as instantaneous feed rate of the side plates shown.

Nach einer Neuzustellung der feuerfesten Seitenplatten werden in einer Einschleifphase Fluchtungsfehler zwischen der Stirnseite der Seitenplatten und der Stirnseite der Gießwalzen beseitigt, die möglicherweise durch Fertigungstoleranzen an den Seitenplatten auftreten. Diese Einschleifphase sollte, so sie überhaupt notwendig ist, nicht länger als 120 sec dauern, wobei der mittlere Seitenplattenverschleiß mindestens 10 mm/h, vorzugsweise mindestens 20 mm/h beträgt. Dieser Wert wird gegebenenfalls jedoch nur kurz vor Stopfenöffnung erreicht.After a re-delivery of the refractory side plates are in a grinding phase Misalignment between the face of the side plates and the face of the casting rolls eliminated, which may be due to manufacturing tolerances on the side plates. This lapping phase should, if it is necessary at all, not longer than 120 sec with mean side panel wear at least 10 mm / h, preferably at least 20 mm / h. However, this value may be only briefly before Stopper opening reached.

Der eigentliche Gießprozess beginnt mit einem ersten Zeitintervall Δt1, in dessen Verlauf eine Horizontalbewegung der Seitenplatten, in Richtung der Gießwalzenachsen auf die Stirnseiten der Gießwalzen zu, in drei Abschnitten erfolgt. In einer Startphase (1. Abschnitt) werden die Seitenplatten während einer Zeitspanne von maximal 90 sec mit einem Verschleiß bzw. einer Vorschubgeschwindigkeit vs1 von 1,0 mm/h bis 20 mm/h gegen die Stirnseiten der Gießwalzen bewegt. Diese Startphase dauert höchstens 90 sec. Innerhalb dieser Startphase, vorzugsweise an deren Beginn, erfolgt die Stopfenöffnung und der Schmelzenpool beginnt sich mit Metallschmelz zu füllen, wobei bei der Stopfenöffnung und kurz danach ein Maximalwert für die Vorschubgeschwindigkeit von 50 mm/h nicht überschritten wird. Daran schließt eine maximal 120 sec dauernde Übergangsphase (2. Abschnitt) an, in deren Verlauf die Vorschubgeschwindigkeit vs2 der Seitenplatten weniger als 10 mm/h beträgt und die in eine stationäre Betriebsphase (3. Abschnitt) überleitet, in der die Vorschubgeschwindigkeit vs3 auf Werte von 0,2 mm/h bis 4,0 mm/h zurückgenommen wird. Mit der in der Startphase hohen Vorschubgeschwindigkeit vs1 wird in sehr kurzer Zeit eine ausgeprägte Dichtkante in die Seitenplatte geschliffen, die im Verlauf des Gießprozesses kontinuierlich aufrechterhalten und dem natürlichen Verschleiß folgend erneuert wird. Für diesen laufenden Emeuerungsprozess reichen die für die Betriebsphase angegebenen Werte vs3 aus. Das Seitenptattenmaterial ist dafür entsprechend auszuwählen.The actual casting process begins with a first time interval .DELTA.t 1 , in the course of which a horizontal movement of the side plates, in the direction of Gießwalzenachsen on the front sides of the casting rolls, takes place in three sections. In a starting phase (1st section), the side plates are moved against the end faces of the casting rolls for a maximum period of 90 seconds with a wear or feed rate v s1 of 1.0 mm / h to 20 mm / h. This start phase lasts at most 90 sec. Within this start phase, preferably at the beginning of the plug opening and the melt pool begins to fill with molten metal, wherein at the stopper opening and shortly thereafter a maximum value for the feed rate of 50 mm / h is not exceeded. This is followed by a transition phase (section 2) lasting a maximum of 120 seconds during which the feed rate v s2 of the side plates is less than 10 mm / h and which leads to a stationary operating phase (section 3) in which the feed rate v s3 to values of 0.2 mm / h to 4.0 mm / h. With the high feed speed v s1 in the starting phase, a pronounced sealing edge is ground into the side plate in a very short time, which is continuously maintained in the course of the casting process and renewed following the natural wear. For this ongoing renewal process, the values v s3 given for the operating phase are sufficient. The side matting material should be selected accordingly.

Mit Beginn der stationären Betriebsphase, vorzugsweise 10 min nach und spätestens 30 min nach Beginn des ersten Zeitintervalls Δt1 beginnt ein zweites Zeitintervall Δt2, in welchem eine vertikale, somit in Gießrichtung G orientierte Vorschubbewegung der Seitenplatten erfolgt. Die Vorschubgeschwindigkeit vv1 beträgt bei ungestörtem stationären Gießbetrieb etwa 4,0 bis 10,0 mm/h, kann jedoch auch in einem weiteren Bereich von 2,0 bis 20 mm/h liegen. Diese vertikale Vorschubbewegung kann auch störungsabhängig erfolgen, wenn Bandkantenerscheinungen oder Verschleiß-, Kraft- oder Bewegungssignale der Seitenplatten auf Störungen des stationären Verschleißprozesses hinweisen. Eine weitere zweckmäßige Ausführungsform besteht darin, das die vertikale Vorschubbewegung der Seitenplatten stufenweise durchgeführt wird, d.h. nach einer raschen Vorschubbewegung mit einer Vorschubgeschwindigkeit vv2 von 2,0 bis 20 mm/h über eine Wegstrecke von 0,2 bis 2,0 mm folgt eine Stillstandsphase von bis zu 30 min, bevor neuerdings eine Vorschubbewegung eingeleitet wird. Diese intermittierende Vorschubbewegung reicht aus, um auch in Umfangsrichtung eine beständige Dichtfläche zwischen GießwalzenMantelfläche und Seitenplatte zu erzeugen, die über längere Zeit erosionsstabil bleibt.With the beginning of the stationary operating phase, preferably 10 minutes after and no later than 30 minutes after the beginning of the first time interval .DELTA.t 1 , a second time interval .DELTA.t 2 , in which a vertical, thus oriented in the casting direction G feed movement of the side plates begins. The feed rate v v1 is about 4.0 to 10.0 mm / h in undisturbed stationary casting operation, but may also be in a wider range from 2.0 to 20 mm / h. This vertical feed motion can also be dependent on interference, if tape edge phenomena or wear, force or motion signals of the side plates indicate disturbances of the stationary wear process. Another expedient embodiment is that the vertical feed movement of the side plates is performed stepwise, ie after a rapid feed movement with a feed rate v v2 from 2.0 to 20 mm / h over a distance of 0.2 to 2.0 mm follows a Standstill phase of up to 30 min, before recently a feed movement is initiated. This intermittent feed movement is sufficient to produce in the circumferential direction a resistant sealing surface between GießwalzenMantelfläche and side plate, which remains erosion-stable for a long time.

Die vorgegebenen stündlichen Verschleißraten an den Seitenplatten, die einer Vorschubgeschwindigkeit (vs1, vs2, vs3, vv1, vv2) der Seitenplatten entsprechen, können durch geregelte Anpressdrücke (ps1, ps2, ps3, pv1, pv2) erreicht werden, die von den Horizontal- und Vertikalanstellvorrichtungen aufgebracht und an die Seitenplatten übertragen werden und im Weiteren in einem Mess- und Regelkreis entsprechend dem für stationäre Zustände vorbestimmten Verschleiß geregelt werden. Das gleiche Ergebnis kann durch einen mechanischen Antrieb in Verbindung mit beispielsweise einem prozessgesteuerten Schrittmotor erzielt werden.The predetermined hourly wear rates on the side plates, which correspond to a feed rate (v s1 , v s2 , v s3 , v v1 , v v2 ) of the side plates, can be controlled by controlled contact pressures (p s1 , p s2 , p s3 , p v1 , p v2 ), which are applied by the horizontal and Vertikalanstellvorrichtungen and transmitted to the side plates and are further controlled in a measuring and control circuit according to the predetermined for stationary conditions wear. The same result can be achieved by a mechanical drive in connection with, for example, a process-controlled stepper motor.

Der dem erfindungsgemäßen Anfahrverfahren zugrundeliegende regelungstechnische Aufbau der Zweiwalzengießanlage ist in Fig. 7 schematisch dargestellt. Ausgehend vom in Fig. 5 bereits dargestellten strukturellen Aufbau der Seitenplattentragvorrichtung 36 mit einem Tragrahmen 8, 9, der die Seitenplatten 6, 7 aufnimmt, einem Verstellrahmen 37, an dem der jeweilige Tragrahmen 8, 9 in Vertikalführungen 41 geführt ist und einem Basisrahmen 40, auf dem der Verstellrahmen 37 in Horizontalführungen 41 abgestützt und geführt ist, sind Positionserfassungseinrichtungen 44 zur Ermittlung der Relativposition des jeweiligen Verstellrahmens 37 zum Basisrahmen 40 und Positionserfassungseinrichtungen 45 zur Ermittlung der Relativposition des jeweiligen Tragrahmens 8, 9 zum Verstellrahmen 37 vorgesehen. Zusätzlich sind den Horizontalverstelleinrichtungen 42 Anpressdnrck Messeinrichtungen 47 und den Vertikalverstelleinrichtungen 39 Anpressdruck-Messeinrichtungen 48 zugeordnet, die eine kontinuierliche Erfassung des Seitenplattenverschleißes ermöglicht. Alle Positionserfassungseinrichtungen und Anpressdruck-Messeinrichtungen sind über Signalleitungen mit einer Recheneinheit 46, die auch als Einzelregelkreis, ausgebildet sein kann, verbunden. Unter Einbindung von vorgegebenen oder zusätzlich gemessenen Eingangsgrößen erfolgt eine dem gewählten Anfahrmodus entsprechende Seitenplattenanstellung an die Gießwalzen. Alternativ besteht auch die Möglichkeit die Eingangsgrößen einem übergeordnetem Leitsystem 51 aufzuschalten und dort auf der Basis vorgegebener mathematischer Modelle Vorgaben an die als Einzelregelkreis arbeitende Recheneinheit 46 weiterzugeben, wobei über das Leitsystem Einflussgrößen aus anderen Einzelregelkreisen 49, 50 Berücksichtigung finden und umgekehrt.The control technique underlying the starting method according to the invention Structure of the two-roll caster is shown schematically in Fig. 7. Starting from the in Fig. 5 already shown structural structure of the side plate support device 36 with a support frame 8, 9, which receives the side plates 6, 7, an adjustment frame 37 at the respective support frame 8, 9 is guided in vertical guides 41 and a Base frame 40, on which the adjusting frame 37 is supported in horizontal guides 41 and is guided, position detecting means 44 for determining the relative position of the respective adjustment frame 37 to the base frame 40 and position detection devices 45 for determining the relative position of the respective support frame 8, 9 to the adjustment frame 37 provided. In addition, the Horizontalverstelleinrichtungen 42 Anpressdnrck Measuring devices 47 and the Vertikalverstelleinrichtungen 39 contact pressure measuring devices 48 associated with a continuous recording of Side plate wear possible. All position detecting devices and Contact pressure measuring devices are via signal lines with a computing unit 46, the can also be designed as a single control loop, connected. Involved by predetermined or additionally measured input variables is the one selected Start-up mode corresponding side plate adjustment to the casting rolls. Alternatively exists also the possibility of the input variables a higher-level control system 51 aufzuschalten and there on the basis of predetermined mathematical models specifications to pass the working as a single-loop arithmetic unit 46, wherein on the Control system Factors influencing other individual control loops 49, 50 are taken into account and vice versa.

Claims (20)

  1. A process for producing a metal strip using a two-roller casting device (1), in which metal melt (16) is introduced into a melt pool (14), which is formed by two oppositely rotating casting rollers (2, 3) with casting-roller axes (4, 5) arranged parallel to one another and two side plates (6, 7) which bear against the end sides (17, 18) of the casting rollers, and in which an at least partially solidified metal strip (21) is conveyed out of a casting gap (19) formed by the casting rollers, characterized
    in that the side plates (6, 7), in a first time interval (Δt1), are moved onto the end sides (17, 18) of the casting rollers in a first direction of movement parallel to the casting-roller axes (4, 5), and
    in that the side plates (6, 7), in a second time interval (Δt2), are moved onto a portion of the lateral surfaces (10, 11) of the casting rollers in a second direction of movement parallel to the casting direction (G) in the casting gap (19).
  2. The process as claimed in claim 1, characterized in that, in chronological order, the first time interval (Δt1) overlaps the second time interval (Δt2) at least in a subsection.
  3. The process as claimed in claim 1, characterized in that, in chronological order, the second time interval (Δt2) overlaps the first time interval (Δt1) at least in a subsection.
  4. The process as claimed in one of the preceding claims, characterized in that the first time interval (Δt1) starts before the second time interval (Δt2).
  5. The process as claimed in one of the preceding claims, characterized in that the first time interval (Δt1) starts when the metal melt is fed into the melt pool (14) or before this.
  6. The process as claimed in one of the preceding claims, characterized in that the side plates (6, 7) are moved onto the casting rollers (2, 3) as a function of the wear properties of the refractory material used.
  7. The process as claimed in one of the preceding claims 1 to 6, characterized in that the first time interval (Δt1) is formed by three sections,
    a starting phase, in which the side plates (6, 7), during a time period of at most 90 sec, are moved onto the end sides (17, 18) of the casting rollers at a feed rate (vs1) which corresponds to material wear to the side plates of less than 50 mm/h, preferably from 1 mm/h to 30 mm/h,
    a transition phase, in which the side plates, during a period of at most 3 min, are moved onto the end sides of the casting rollers at a feed rate (Vs2) which corresponds to material wear to the side plates of less than 20 mm/h,
    a steady-state operating phase, in which the side plates are moved onto the end sides of the casting rollers at a feed rate (vs3) which corresponds to material wear to the side plates of between 0.2 mm/h and 4 mm/h .
  8. The process as claimed in one of the preceding claims 1 to 6, characterized in that the first time interval (Δt1) is formed by three sections,
    a starting phase, in which the side plates (6, 7), during a period of at most 90 sec, are pressed onto the end sides of the casting rollers with a contact pressure (ps1) which corresponds to material wear to the side plates of less than 50 mm/h, preferably from 1 mm/h to 30 mm/h,
    a transition phase, in which the side plates, during a period of at most 3 min, are pressed onto the end sides of the casting rollers with a contact pressure (ps2) which corresponds to material wear to the side plates of less than 20 mm/h,
    a steady-state operating phase, in which the side plates are pressed onto the end sides of the casting rollers with a contact pressure (ps3) which corresponds to material wear to the side plates of between 0.2 mm/h and 4 mm/h.
  9. The process as claimed in one of the preceding claims, characterized in that the second time interval (Δt2) starts at the latest 30 min, preferably as early as 10 min, after the start of the first time interval (Δt1).
  10. The process as claimed in one of the preceding claims, characterized in that the second time interval (Δt2) starts substantially at the start of the steady-state operating phase.
  11. The process as claimed in one of the preceding claims, characterized in that the side plates, during the second time interval (Δt2), are moved/pressed onto a portion of the lateral surface of the casting rollers at a feed rate (vv1,vv2) or with a contact pressure (pv1, pv2) which corresponds to material wear to the side plates of 2 mm/h to 20 mm/h, preferably 4.0 to 10 mm/h.
  12. The process as claimed in one of claims 1 to 10, characterized in that the side plates (6, 7), during the second time interval (Δt2), are moved intermittently, with movement phases and stationary phases alternating and the stationary phases of the side plates not exceeding 30 min, preferably 5 min.
  13. The process as claimed in claim 12, characterized in that the side plates (6, 7), during each movement phase, are moved 0.01 to 2 mm, preferably 0.1 to 1 mm, onto a portion of the lateral surface (10, 11) of the casting rollers.
  14. The process as claimed in one of the preceding claims, characterized in that the first time interval (Δt1) is directly preceded by a grind-in phase, in which the side plates, during a period of at most 120 sec, are pressed onto the end sides of the casting rollers at a feed rate or with a contact pressure which corresponds to mean material wear to the side plates of at least 10 mm/h, preferably at least 20 mm/h, the side plates, during a subsection of this grinding-in phase, if appropriate additionally being pressed onto a portion of the lateral surfaces of the casting rollers with a high contact pressure in the casting direction.
  15. The process as claimed in one of claims 1 to 13, characterized in that the first time interval (Δt1) is preceded by a grinding-in phase in which mean horizontal material wear to the side plates of at least 0.3 mm is produced, this grinding-in phase being carried out with cold or preheated side plates, and if appropriate intermediate heating being carried out between this grinding-in phase and the start of the first time interval (Δt1).
  16. A two-roller casting device having two casting rollers (2, 3), which are arranged parallel to one another and rotate in opposite directions, and two side plates (8, 9), which bear against the end sides (17, 18) of the casting rollers and are supported in side-plate carrying apparatuses (36), for carrying out the method as claimed in one of claims 1 to 14, characterized
    in that each side-plate carrying device (36) has horizontal guides (41) for implementing a feed movement of the side plate (8, 9) in the direction of the casting-roller axes (4, 5),
    in that each side-plate carrying device (36) is assigned a horizontal-adjustment device (42) for horizontal displacement of the side plate (8, 9) and a position-recording device (44) for recording the horizontal position of the side plate (8, 9),
    in that each side-plate carrying device (36) has vertical guides (38) for implementing a feed movement of the side plate (8, 9) in the casting direction (G), based on the casting gap (19),
    in that each side-plate carrying device (36) is assigned a vertical-adjustment device (39) for the vertical displacement of the side plate (8, 9) and a position-recording device (45) for recording the vertical position of the side plate,
    in that a computer unit (46) is connected, via signal lines, to the horizontal-adjustment devices (42), the vertical-adjustment devices (39) and the position-recording devices (44, 45) in order to transmit measurement and control signals.
  17. The two-roller casting device as claimed in claim 16, characterized in that the horizontal-adjustment devices (42) and the vertical-adjustment devices (39) are assigned individual contact pressure measuring devices (47, 48) for determining the contact pressure of the side plates (8, 9) on the casting rollers (2, 3) in the horizontal and vertical directions, and the horizontal-adjustment devices (42) and the vertical-adjustment devices (39) are connected to the computer unit (46) via signal lines.
  18. The two-roller casting device as claimed in claim 17, characterized in that the computer unit (46) is designed as an individual control circuit with a higher-level plant control system (51).
  19. The two-roller casting device as claimed in one of claims 16 to 18, characterized in that the side-plate carrying device (36) is formed by a basic frame (40), an adjustment frame (37) and a carrying frame (8, 9), the adjustment frame (37) being supported on the basic frame (40) via horizontal guides (41), and the carrying frame (8, 9) for the side plate (6, 7) being supported on the adjustment frame (37) via vertical guides (38), and the horizontal-adjustment device (42) being arranged between the basic frame (40) and adjustment frame (37) and the vertical-adjustment device (39) being arranged between the adjustment frame (37) and carrying frame (8, 9) for the side plate (6, 7).
  20. The two-roller casting device as claimed in one of claims 16 to 19, characterized in that each side plate (6, 7) is assigned a heating device.
EP03738063A 2002-06-25 2003-06-18 Method for producing a metal strip using a twin-roll casting device Expired - Lifetime EP1515813B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT03738063T ATE309875T1 (en) 2002-06-25 2003-06-18 METHOD FOR PRODUCING A METAL STRIP USING A TWO-ROLL CASTING DEVICE

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT9462002 2002-06-25
AT0094602A AT412195B (en) 2002-06-25 2002-06-25 METHOD FOR PRODUCING A METAL STRIP WITH A TWO-ROLLING CASTING DEVICE
PCT/EP2003/006468 WO2004000487A1 (en) 2002-06-25 2003-06-18 Method for producing a metal strip using a twin-roll casting device

Publications (2)

Publication Number Publication Date
EP1515813A1 EP1515813A1 (en) 2005-03-23
EP1515813B1 true EP1515813B1 (en) 2005-11-16

Family

ID=29783638

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03738063A Expired - Lifetime EP1515813B1 (en) 2002-06-25 2003-06-18 Method for producing a metal strip using a twin-roll casting device

Country Status (9)

Country Link
US (1) US7066238B2 (en)
EP (1) EP1515813B1 (en)
KR (1) KR101048534B1 (en)
CN (1) CN1314500C (en)
AT (1) AT412195B (en)
AU (1) AU2003245968B2 (en)
DE (1) DE50301696D1 (en)
MX (1) MXPA04012842A (en)
WO (1) WO2004000487A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008010689A1 (en) 2008-02-22 2009-09-03 Thyssenkrupp Nirosta Gmbh Method and two-roll casting machine for producing cast from a molten metal strip
DE102008010688A1 (en) 2008-02-22 2009-09-03 Thyssenkrupp Nirosta Gmbh Method and two-roll casting machine for producing cast from a molten metal strip

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE502004002199D1 (en) 2003-07-01 2007-01-11 Sms Demag Ag METHOD OF OPERATING A TAPE CASTING MACHINE FOR PRODUCING A METAL TAPE
DE102005054996A1 (en) 2005-11-18 2007-05-24 Thyssenkrupp Nirosta Gmbh Method for operating a two-roll casting machine for casting molten metal into cast strip
US7556084B2 (en) * 2006-03-24 2009-07-07 Nucor Corporation Long wear side dams
US7503375B2 (en) * 2006-05-19 2009-03-17 Nucor Corporation Method and apparatus for continuously casting thin strip
JP5103916B2 (en) * 2007-02-01 2012-12-19 株式会社Ihi Method of operating twin roll casting machine and side weir support device
DE102007041263A1 (en) * 2007-08-30 2009-03-05 Thyssenkrupp Nirosta Gmbh Apparatus and method for casting strips of a molten metal, in particular a molten steel
JP5012353B2 (en) * 2007-09-19 2012-08-29 株式会社Ihi Method of operating twin roll casting machine and side weir support device
US8251127B2 (en) 2008-06-24 2012-08-28 Nucor Corporation Strip casting apparatus with independent delivery nozzle and side dam actuators
KR101044759B1 (en) * 2008-11-24 2011-06-27 주식회사 포스코 Casting method in twin roll sheet metal casting process
JP5837758B2 (en) 2011-04-27 2015-12-24 キャストリップ・リミテッド・ライアビリティ・カンパニー Twin roll casting apparatus and control method thereof
US10046384B2 (en) 2015-09-30 2018-08-14 Nucor Corporation Side dam with pocket
WO2021001495A1 (en) 2019-07-03 2021-01-07 Hydro Aluminium Rolled Products Gmbh Molten metal guide for strip casting systems
EP4023358A1 (en) 2021-01-05 2022-07-06 Speira GmbH Release free aluminium strip casting

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6326243A (en) 1986-07-17 1988-02-03 Nippon Yakin Kogyo Co Ltd Direct casting equipment for thin metal strips
JPH0712526B2 (en) * 1987-04-08 1995-02-15 日新製鋼株式会社 Thin plate continuous casting machine
JPH082479B2 (en) * 1988-07-22 1996-01-17 日新製鋼株式会社 Thin plate continuous casting machine
JPH0787970B2 (en) * 1988-07-28 1995-09-27 日新製鋼株式会社 Thin plate continuous casting machine
JPH07115133B2 (en) * 1988-08-08 1995-12-13 日新製鋼株式会社 Thin plate continuous casting apparatus and operating method thereof
JPH07115134B2 (en) 1988-09-02 1995-12-13 日新製鋼株式会社 Thin plate continuous casting machine
FR2656244A1 (en) * 1989-12-26 1991-06-28 Siderurgie Fse Inst Rech DEVICE FOR CONTINUOUSLY CASTING THIN METAL PRODUCTS BETWEEN TWO ROTATED COOLED CYLINDERS.
JPH0741376B2 (en) * 1990-06-11 1995-05-10 新日本製鐵株式会社 Thin strip continuous casting method
JP3071294B2 (en) 1992-03-24 2000-07-31 日新製鋼株式会社 Thin plate continuous casting equipment
FR2703935B1 (en) * 1993-04-14 1995-07-21 Usinor Sacilor DEVICE FOR QUICK CHANGING AND HOLDING A SIDE WALL OF A CONTINUOUS CASTING MACHINE OF A METAL PRODUCT BETWEEN CYLINDERS.
JPH06326243A (en) * 1993-05-13 1994-11-25 Dainippon Printing Co Ltd Manufacture of lead frame member for resin molded semiconductor device
FR2727337B1 (en) * 1994-11-30 1996-12-27 Usinor Sacilor SUPPORT DEVICE FOR A SIDE FACE OF A CONTINUOUS CASTING PLANT OF METAL BANDS BETWEEN CYLINDERS
US5588479A (en) * 1995-01-12 1996-12-31 Ishikawajima-Harima Heavy Industries Company Limited Strip casting
IT1284201B1 (en) * 1996-07-31 1998-05-08 Sviluppo Materiali Spa PLATES WITH ANTI-WEAR CERAMIC FILLINGS FOR MACHINES FOR CONNTINUAL CASTING OF THIN FLAT BODIES AND PROCEDURE FOR THEIR
FR2765504B1 (en) * 1997-07-04 1999-08-20 Usinor SIDE SIDE FOR SEALING THE CASTING SPACE OF A CONTINUOUS CASTING INSTALLATION BETWEEN METAL THIN STRIP CYLINDERS
FR2768354B1 (en) * 1997-09-12 1999-10-22 Usinor SIDE PANEL FOR SHUTTERING THE CASTING SPACE OF A CONTINUOUS CASTING INSTALLATION OF METAL STRIPS BETWEEN CYLINDERS, AND CASTING INSTALLATION THUS EQUIPPED
KR100333070B1 (en) * 1997-12-20 2002-10-18 주식회사 포스코 Edge Dam Position Control Method in Twin Roll Sheet Casting Machine
JP2000042692A (en) 1998-07-27 2000-02-15 Nippon Steel Corp Twin-drum continuous casting method and apparatus
FR2786716B1 (en) * 1998-12-03 2001-01-05 Usinor DEVICE FOR APPLYING A SIDE SIDE FOR THE CONTINUOUS CASTING INSTALLATION OF METAL STRIPS BETWEEN TWO CYLINDERS AGAINST THE PLANAR FACES OF THE CYLINDERS
DE10056916A1 (en) * 2000-11-16 2002-05-23 Sms Demag Ag Process for continuously casting a steel strip comprises passing the strip between casting rollers with front sides having adjustable sealing elements which move along a vertical plane in the casting direction

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008010689A1 (en) 2008-02-22 2009-09-03 Thyssenkrupp Nirosta Gmbh Method and two-roll casting machine for producing cast from a molten metal strip
DE102008010688A1 (en) 2008-02-22 2009-09-03 Thyssenkrupp Nirosta Gmbh Method and two-roll casting machine for producing cast from a molten metal strip
DE102008010689B4 (en) 2008-02-22 2018-10-31 Outokumpu Nirosta Gmbh Two-roll casting machine for producing cast from a molten metal strip
DE102008010688B4 (en) * 2008-02-22 2019-03-28 Outokumpu Nirosta Gmbh Method and two-roll casting machine for producing cast from a molten metal strip

Also Published As

Publication number Publication date
MXPA04012842A (en) 2005-03-31
KR101048534B1 (en) 2011-07-11
DE50301696D1 (en) 2005-12-22
AU2003245968B2 (en) 2008-02-21
WO2004000487A1 (en) 2003-12-31
US20060054298A1 (en) 2006-03-16
CN1662323A (en) 2005-08-31
US7066238B2 (en) 2006-06-27
ATA9462002A (en) 2004-04-15
AT412195B (en) 2004-11-25
KR20050008854A (en) 2005-01-21
EP1515813A1 (en) 2005-03-23
CN1314500C (en) 2007-05-09
AU2003245968A1 (en) 2004-01-06

Similar Documents

Publication Publication Date Title
EP1515813B1 (en) Method for producing a metal strip using a twin-roll casting device
DE69507092T2 (en) Double roll continuous casting machine with pressed side walls
DE60030331T2 (en) BAND CASTING
EP0371281B1 (en) Apparatus for producing hot-rolled steel strip
AT410767B (en) METHOD AND DEVICE FOR THE CONTINUOUS PRODUCTION OF A ROLLED METAL STRIP FROM A METAL MELT
DE69631434T2 (en) DOUBLE-STRAND CASTING SYSTEM AND METHOD
DE3501716C2 (en) Method and device for adjusting the narrow side plates of a continuous casting mould during the continuous casting of metals, in particular steel
EP3515634B1 (en) Controlling the narrow-side conicity of a continuous casting mould: method and device
DE60128088T2 (en) strip caster
DE3880894T2 (en) Double belt casting machine and method for casting when using the same.
EP1225992A1 (en) Strip-casting machine for producing a metal strip
EP2436459A1 (en) Device and method for positioning at least one of two casting rollers in a continuous casting method for producing a strip of metal
EP1957220B1 (en) Method of operating a twin-roll casting machine for casting molten metal into cast strip
DE102008010688B4 (en) Method and two-roll casting machine for producing cast from a molten metal strip
DE102008010689B4 (en) Two-roll casting machine for producing cast from a molten metal strip
EP1070559B1 (en) Method for changing the cross-sectional format of a strand in a continuous casting machine during operation
EP4514554B1 (en) Casting-rolling installation, and method for producing a steel strip
DE102019217682A1 (en) Device and method for transporting strip material, in particular hot strip
DE3317635A1 (en) Hot-rolling method
EP1646464B1 (en) Method for operating a strip casting machine for producing a metal strip
DD283961A5 (en) METHOD AND DEVICE FOR CONTINUOUS CASTING OF DUENNE METALLIC OBJECTS
DE10134076C2 (en) Device for the continuous casting of metal melts, in particular steel melts
DE19814988A1 (en) Method for producing a thin metal strip requiring no separate smoothing operations
EP0832989B1 (en) Process and device for producing coated metal bars, especially metal strips
DE102008010653B4 (en) Method and two-roll casting machine for producing cast from a molten metal strip

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20041220

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

DAX Request for extension of the european patent (deleted)
AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051116

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051116

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051116

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051116

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051116

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051116

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 50301696

Country of ref document: DE

Date of ref document: 20051222

Kind code of ref document: P

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060216

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060216

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060216

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060227

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20060227

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060417

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060517

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060630

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20060817

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060618

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051116

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051116

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051116

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20110708

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20120618

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20120618

Year of fee payment: 10

Ref country code: SE

Payment date: 20120614

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20120711

Year of fee payment: 10

Ref country code: BE

Payment date: 20120710

Year of fee payment: 10

BERE Be: lapsed

Owner name: *VOEST-ALPINE INDUSTRIEANLAGENBAU G.M.B.H. & CO.

Effective date: 20130630

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20140101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130619

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20130618

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20140228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130618

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130701

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130618

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20140627

Year of fee payment: 11

PGRI Patent reinstated in contracting state [announced from national office to epo]

Ref country code: IT

Effective date: 20140701

PGRI Patent reinstated in contracting state [announced from national office to epo]

Ref country code: IT

Effective date: 20140701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130618

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20200618

Year of fee payment: 18

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50301696

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220101