EP0013539A1 - Speed control method for a continuous casting installation - Google Patents
Speed control method for a continuous casting installation Download PDFInfo
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- EP0013539A1 EP0013539A1 EP79810182A EP79810182A EP0013539A1 EP 0013539 A1 EP0013539 A1 EP 0013539A1 EP 79810182 A EP79810182 A EP 79810182A EP 79810182 A EP79810182 A EP 79810182A EP 0013539 A1 EP0013539 A1 EP 0013539A1
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- speed
- casting machine
- casting
- rolling mill
- belt
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- 238000000034 method Methods 0.000 title claims description 11
- 238000009749 continuous casting Methods 0.000 title description 3
- 238000009434 installation Methods 0.000 title 1
- 238000005266 casting Methods 0.000 claims abstract description 67
- 238000005096 rolling process Methods 0.000 claims abstract description 35
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000000498 cooling water Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 244000089486 Phragmites australis subsp australis Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/20—Controlling or regulating processes or operations for removing cast stock
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
- B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/003—Rolling non-ferrous metals immediately subsequent to continuous casting, i.e. in-line rolling
Definitions
- Continuous casting machines with moving molds can be used to manufacture metal strips (Dr. Herrmann, "Handbook of Continuous Casting”).
- the casting machine now produces a strip thickness which is greater than the dimension permitted for coiling or uncoiling, the casting strip must be rolled in line and in synchronism with the casting machine.
- the speed of the rolling stock can fluctuate as a function of time by several%, even if the peripheral speed or the speed of the rolls remains constant.
- the belt driver consists of one or more driven roller pairs arranged one behind the other, which hold the belt emerging from the casting machine and guide under relatively light roller pressure at a speed precisely matched to the casting machine and thus keep forces acting on the belt from the outside in the casting direction away from the casting machine.
- the mentioned additional devices result in a relatively large distance between the casting machine and the first rolling mill. As a result, the cast strip cools down on the way due to radiation and contact with guide rollers. In order to achieve the required rolling temperature, a continuous furnace must usually be provided in front of the rolling mill to compensate for the heat losses.
- the drive of the casting machine or of the belt driver is used as Guide section provided, which determines the speed of the other drives.
- Guide section provided, which determines the speed of the other drives.
- the object of the invention is now to provide a method for speed control of the drive of the casting machine and, if appropriate, the rolling mill in such a way that the previously required devices such as belt drivers, belt guides for the belt loop and continuous furnace can be omitted, which leads to considerable savings in investment and operating costs Consequence.
- the method according to the invention is characterized in that the speed of the cast strip produced by the first rolling mill arranged after the casting machine is measured, and this speed is used as a guide value for controlling the drive speed of the casting machine. This ensures that the speed of the mold adapts and optimizes the speed of the cast strip continuously, directly, without a belt loop. If necessary, it must be ensured that the cast strip between the casting machine and the first rolling mill is tension-free over support rollers.
- One method is that the speed of a measuring roller lying on the cast belt is processed electronically to a control signal in a known manner. It is also possible to use contactless measuring and control devices on the market. ("Swiss machine market", No. 18/1974, pages 42/43).
- the belt speed is preferably measured at the outlet of the casting machine and used as a guide value for controlling the drive.
- the drawing shows the casting trough 1 and the casting trough 2 from which the molten metal is fed to the casting machine 3.
- the casting machine is shown purely schematically and can have any known structure.
- the cast strip 4 leaving the casting machine passes a temperature measuring device 5 and a speed measuring device 6 to the roll stand 7, from which it emerges as a rolled strip 8 of reduced thickness.
- the drive of the casting machine 3 is designated 9 and the drive of the rolling mill 10.
- the speed of the casting machine and thus the speed of the casting strip 4 emerging from it are regulated according to the invention.
- the speed of the cast strip 4 is also from the speed of the rolling mill and how Proceeded above, depending on other factors.
- bas speed measuring device b now serves to record the casting belt speed between the Unu Walserk and the corresponding control of the speed of the casting machine.
- An additional advantage is that the space required for a production line is reduced to a minimum, which in turn has a favorable effect on the investment costs.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Continuous Casting (AREA)
- Control Of Metal Rolling (AREA)
Abstract
Zwischen einer Giessmaschine (3) und dem ersten, darauffolgenden Walzwerk (7) wird die Geschwindigkeit des Giessbandes (4) gemessen und die Geschwindigkeit der Giessmaschine (3) wird der gemessenen Geschwindigkeit entsprechend geregelt. Es können damit die bisher üblicher. Hilfsaggregate zwischen Giessmaschine (3) und erstem Walzwerk (7) wie Bandtreiber und Durchlaufofen sowie die Bildung einer Bandschlaufe vermieden und damit die Investitionen, der Energie bedarf und der Raumbedarf herabgesetzt werden.The speed of the casting belt (4) is measured between a casting machine (3) and the first, subsequent rolling mill (7) and the speed of the casting machine (3) is regulated according to the measured speed. It can be the more common. Auxiliary units between the casting machine (3) and the first rolling mill (7), such as the belt driver and continuous furnace, and the formation of a belt loop are avoided, and thus the investments, the energy requirement and the space requirement are reduced.
Description
Für die Herstellung von Metallbändern können kontinuierlich arbeitende Giessmaschinen mit mitlaufenden Kokillen eingesetzt werden (Dr. Herrmann, "Handbuch des Stranggiessens").Continuous casting machines with moving molds can be used to manufacture metal strips (Dr. Herrmann, "Handbook of Continuous Casting").
Erfahrungsgemäss muss die Geschwindigkeit der mitlaufenden Kokillen genau auf die Geschwindigkeit des entstehenden Gussbandes abgestimmt sein, damit Relativbewegungen zwischen dem entstehenden Band und den Kokillenflächen möglichst vermieden werden, um Spannungsrisse im erstarrenden Material zu verhindern.Experience has shown that the speed of the moving molds must be precisely matched to the speed of the cast strip that is created, so that relative movements between the resulting strip and the mold surfaces are avoided as far as possible to prevent stress cracks in the solidifying material.
Als Kokille wird hierbei jedes zur Bildung eines Giessraumes dienende Element, wie umlaufende Metallbänder, aufeinanderfolgende, aus einem Stück oder aus mehreren zusammengesetzten Einzelheiten bestehende Blöcke wie auch sog. Giessräder verstanden.As a mold, each element used to form a casting space, such as surrounding metal strips, is made up of one or more pieces Composed details understood existing blocks as well as so-called casting wheels.
Um für den Giessprozess optimale Verhältnisse zu schaffen, muss die Geschwindigkeit der Kokillen und damit auch des erzeugten Gussbandes stufenlos regelbar sein.In order to create optimal conditions for the casting process, the speed of the molds and thus the cast strip produced must be infinitely variable.
Produziert nun die Giessmaschine eine Banddicke, welche grösser ist als die zum Haspeln oder Abhaspeln zulässige Dimension, so muss das Gussband in Linie und im Gleichlauf mit der Giessmaschine gewalzt werden.If the casting machine now produces a strip thickness which is greater than the dimension permitted for coiling or uncoiling, the casting strip must be rolled in line and in synchronism with the casting machine.
Es ist bekannt, dass die Geschwindigkeit des im Walzprozess begriffenen Bandes von mehreren Faktoren abhängig ist. Erfahrungsgemäss kann diese Geschwindigkeit selbst bei gegebener Dickenabnahme und konstanter Drehzahl der Walzen eine Veränderung über zeitliche Intervalle aufweisen.It is known that the speed of the strip being processed depends on several factors. Experience has shown that this speed can change over time intervals even with a given decrease in thickness and constant speed of the rolls.
Währenddem es z. B. möglich ist, den Walzgrad praktisch unverändert zu halten, gelingt es erfahrungsgemäss nicht, den von mehreren Einflüssen abhängigen Reibungskoeffizienten und die Festigkeit bzw. die Veränderung des Formänderungswiderstandes genügend konstant zu halten. Beide Werte sind z. B. von der Temperatur des Walzgutes, der Walzgeschwindigkeit und von weiteren Faktoren abhängig.While it is e.g. B. it is possible to keep the rolling degree practically unchanged, experience has shown that it is not possible to keep the coefficient of friction dependent on several influences and the strength or the change in the deformation resistance sufficiently constant. Both values are e.g. B. the temperature of the rolling stock, the rolling speed and other factors.
Unter diesen Umständen kann die Geschwindigkeit des Walzgutes in Funktion der Zeit um mehrere % schwanken, selbst wenn die Umfangsgeschwindigkeit bzw. die Drehzahl der Walzen konstant bleibt.Under these circumstances, the speed of the rolling stock can fluctuate as a function of time by several%, even if the peripheral speed or the speed of the rolls remains constant.
Eine starre Koppelung von Giessmaschine und Walzwerk inbezug auf die Geschwindigkeit ist somit nicht möglich.A rigid coupling of the casting machine and the rolling mill in relation to the speed is therefore not possible.
Es ist nun üblich, am Austritt der Giessmaschine einen Bandtreiber anzuordnen und anschliessend eine sogenannte Bandschlaufe vorzusehen, welche zum Ausgleich von Geschwindigkeitsdifferenzen des Bandes zwischen Giessmaschine und Walzwerk dient. Zudem kann die Veränderung der Schlaufe zur Erzeugung eines Signals für die Steuerung des Antriebes des Walzwerkes dienen (Vortrag R. W. Hazelett und Dr. C. E. Schwartz, American Institut of Mining, 1964 oder "Bander, Bleche, Rohre" Heft Nr. 9, 1970, Seiten 469 bis 471).It is now customary to arrange a belt driver at the outlet of the casting machine and then to provide a so-called belt loop, which is used to compensate for speed differences of the belt between the casting machine and the rolling mill. In addition, changing the loop can be used to generate a signal for controlling the drive of the rolling mill (Lecture RW Hazelett and Dr. CE Schwartz, American Institute of Mining, 1964 or "Bander, Bleche, Rohr" Issue No. 9, 1970, pages 469 to 471).
Der Bandtreiber besteht aus einem oder mehreren hintereinander angeordneten, angetriebenen Walzenpaaren, welche das aus der Giessmaschine austretende Band fassen und unter relativ leichtem Walzendruck bei genau auf die Giessmaschine abgestimmter Geschwindigkeit führen und damit von aussen in Giessrichtung auf das Band wirkende Kräfte von der Giessmaschine fernhalten.The belt driver consists of one or more driven roller pairs arranged one behind the other, which hold the belt emerging from the casting machine and guide under relatively light roller pressure at a speed precisely matched to the casting machine and thus keep forces acting on the belt from the outside in the casting direction away from the casting machine.
Die erwähnten Zusatzeinrichtungen ergeben eine relativ grosse Distanz zwischen der Giessmaschine und dem ersten Walzwerk. Dies hat zur Folge, dass sich das Gussband unterwegs infolge Abstrahlung und Kontakten mit Führungsrollen abkühlt. Um die erforderliche Walztemperatur zu erreichen, muss in der Regel vor dem Walzwerk noch ein Durchlaufofen vorgesehen werden, um die Wärmeverluste zu kompensieren.The mentioned additional devices result in a relatively large distance between the casting machine and the first rolling mill. As a result, the cast strip cools down on the way due to radiation and contact with guide rollers. In order to achieve the required rolling temperature, a continuous furnace must usually be provided in front of the rolling mill to compensate for the heat losses.
Die beschriebenen Zusatzeinrichtungen bilden einen wesentlichen Bestandteil der Investitionskosten. Zudem verteuert der Betrieb des Durchlaufofens die Betriebskosten. Insbesondere steht dieser Aufwand auch im Widerspruch zu den heute allgemein angestrebten Energiesparmassnahmen.The additional devices described form an essential part of the investment costs. In addition, the operation of the continuous furnace increases the operating costs. In particular, this effort also contradicts the energy saving measures that are generally sought today.
Um die erforderliche Genauigkeit der Regelung der Antriebsgeschwindigkeiten der verschiedenen, in Tandem angeordneten Vorrichtungen zu bewerkstelligen, wird der Antrieb der Giessmaschine oder des Bandtreibers als Leitsektion vorgesehen, welche die Geschwindigkeit der anderen Antriebe bestimmt. Hierfür sind verschiedene, bekannte Artriebe und Steuerungen auf dem Markt.In order to achieve the required accuracy of the regulation of the drive speeds of the various devices arranged in tandem, the drive of the casting machine or of the belt driver is used as Guide section provided, which determines the speed of the other drives. There are various well-known drives and controls on the market for this.
Aufgabe der Erfindung ist es nun, ein Verfahren für die Geschwindigkeitssteuerung des Antriebes der Giessmaschine und gegebenenfalls des Walzwerkes derart zu schaffen, dass die bisher erforderlichen Vorrichtungen wie Bandtreiber, Bandführung für die Bandschlaufe und Durchlaufofen entfallen können, was beträchtliche Einsparungen an Investitions- und Betriebskosten zur Folge hat.The object of the invention is now to provide a method for speed control of the drive of the casting machine and, if appropriate, the rolling mill in such a way that the previously required devices such as belt drivers, belt guides for the belt loop and continuous furnace can be omitted, which leads to considerable savings in investment and operating costs Consequence.
Das erfindungsgemässe Verfahren ist dadurch gekennzeichnet, dass die durch das erste nach der Giessmaschine angeordnete Walzwerk erzeugte Geschwindigkeit des Gussbandes gemessen wird, und diese Geschwindigkeit als Leitwert für die Steuerung der Antriebsgeschwindigkeit der Giessmaschine verwendet wird. Damit wird erreicht, dass sich die Geschwindigkeit der Kokille der Geschwindigkeit des entstehenden Gussbandes kontinuierlich direkt, ohne Bandschlaufe anpasst und optimiert. Nötigenfalls ist dafür zu sorgen, dass das Gussband zwischen Giessmaschine und erstem Walzwerk spannungsfrei über Stützrollen geführt ist.The method according to the invention is characterized in that the speed of the cast strip produced by the first rolling mill arranged after the casting machine is measured, and this speed is used as a guide value for controlling the drive speed of the casting machine. This ensures that the speed of the mold adapts and optimizes the speed of the cast strip continuously, directly, without a belt loop. If necessary, it must be ensured that the cast strip between the casting machine and the first rolling mill is tension-free over support rollers.
Für die genaue Erfassung und Signalisierung der Geschwindigkeit des Gussbandes können bestehende, eine genügende Genauigkeit aufweisende Mess- und Steuergeräte verschiedener Art eingesetzt werden.For the precise detection and signaling of the speed of the cast belt, existing measuring and control devices of various types with sufficient accuracy can be used.
Eine Methode besteht darin, dass die Drehzahl einer auf dem Gussband aufliegenden Messrolle auf bekannte Art elektronisch zu einem Steuersignal aufgearbeitet wird. Es ist auch möglich auf dem Markt befindliche, kontaktlos arbeitende Mess- und Steuergeräte anzuwenden. ("Schweizer-Maschinenmarkt", Nr. 18/1974, Seiten 42/43).One method is that the speed of a measuring roller lying on the cast belt is processed electronically to a control signal in a known manner. It is also possible to use contactless measuring and control devices on the market. ("Swiss machine market", No. 18/1974, pages 42/43).
Vorzugsweise wird die Bandgeschwindigkeit am Austritt der Giessmaschine gemessen und als Leitwert für die Regelung des Antriebes herangezogen.The belt speed is preferably measured at the outlet of the casting machine and used as a guide value for controlling the drive.
Die Erfindung wird nun anhand eines in der Zeichnung schematisch dargestellten Ausführungsbeispiels einer Bandgiess- und Walzanlage und deren Betriebsmöglichkeiten näher erläutert.The invention will now be explained in greater detail on the basis of an exemplary embodiment of a strip casting and rolling plant, which is shown schematically in the drawing, and its operating options.
Die Zeichnung zeigt die Giessrinne 1 und den Giesstrog 2 aus welchem das geschmolzene Metall der Giessmaschine 3 zugeführt wird. Die Giessmaschine ist rein schematisch dargestellt und kann irgendeinen bekannten Aufbau aufweisen. Das die Giessmaschine verlassende Gussband 4 gelangt an einem Temperaturmessgerät 5 und einem Geschwindigkeitsmessgerät 6 vorbei zum Walzgerüst 7, aus dem es als Walzband 8 reduzierter Dicke austritt. Der Antrieb der Giessmaschine 3 ist mit 9 und der Antrieb des Walzwerks mit 10 bezeichnet.The drawing shows the casting trough 1 and the
Aus den bereits erwähnten Gründen wird erfindungsgemäss die Geschwindigkeit der Giessmaschine und damit die Geschwindigkeit des aus ihr austretenden Gussbandes 4 geregelt. Die Geschwindigkeit des Gussbandes 4 ist aber auch von der Geschwindigkeit des Walzwerkes und, wie oben erwährt , von anderen Faktoren abhängig. bas Geschwindigkeitsmessgerät b dient nun der Erfassung der Gussbandgeschwindigkeit zwischen Glessmaschine unu Walserk und der entsprechenden Regelung der Geschwindigkeit der Giessmaschine.For the reasons already mentioned, the speed of the casting machine and thus the speed of the
Die durch das Temperaturmessgerät 5 ermittelte Temperatur des Gussbandes 4 am Austritt der Giessmaschine 3 kann zur Steuerung der Geschwindigkeit des Walzwerks dienen, welche Geschwindigkeit wiederum die Geschwindigkeit des Gussbandes 4 beeinflusst, die durch uas Geschwindigkeitsmessgerät 6 erfasst wird und entsprechenc die Geschwindigkeit der Giessmaschine steuert.The temperature of the
Es wurde oben erwähnt, dass verschiedenartige Messvorrichtungen zur genügend genauen Erfassung der Geschwindigkeit des Gussbandes 4 bekannt sind und zur Regelung der Geschwindigkeit der Giessmaschine 3 und gegebenenfalls des Walzwerks 7 dienen können. Die in der Zeichnung dargestellte Messrolle ist nur als Beispiel aufzufassen. Diesen Mess- und Regelgeräten gehören die in der Zeicnnung schematisch dargestellten Steuerungen 11 und 11 an, die an den Eingängen A bzw. B aie Signale des Geschwindigkeitsmessgerätes 6 bzw. des Temperaturmessgerätes 5 empfangen. Wie die Zeichnung zeigt, regelt die Steurrung 11 den Antrieb 9 der Giessmaschine. In der Zeichnung ist ferner ein Kühlsystem angedeutet, welches von Teilen 13 dieses Systems über Regelventile 14 den Kühlern 15 der Giessmaschine Kühlwasser zuzuführen gestattet. Die Kühlwasserzufuhr wird dabei in Funktion der durch das Temperaturmessgerät ermittelten Temperatur über die Steuerunq 12 geregelt und zwar in dem Sinne, dass bei höherer Temperatur stärker gekühlt wird als bei niedriger. Die Steuerung 12 regelt ebenfalls in Funktion der ermittelten Temperatur den Antrieb 10 für das Walzwerk. Es ergeben sich folgende Möglichkeiten:
- 1. Der Antrieb des Walzwerkes wird nicht automatisch geregelt.
- 1. The drive of the rolling mill is not automatically controlled.
Daraus resultiert eine Geschwindigkeit des Gussbandes 4, welche infolge der vorgenannten Gründe innerhalb eines gewissen Intervalls zeitlich veränderlich sein kann, wobei die Regelung der Geschwindigkeit der Giessmaschine 3 durch die Messung der durch das Walzwerk 7 erzeugten Geschwindigkeit des Gussbandes 4 erfolgt, welche als Leitwert die Geschwindigkeit der Giessmaschine 3 steuert und optimiert.This results in a speed of the
2. Die Bandgeschwindigkeit wird durch besondere Messresultate geregelt:
- Die Temperatur des
Gusbandes 4 zwischen der Giessmaschine 3 und demnachfolgenden Walzwerk 7 gilt als massgebende Grösse für die Ueberwachung des Giessprozesses und für die Weiterverarbeitung des Gussbandes in der Produktionslinie. Dieser Wert wird beeinflusst durch die Giessgeschwindigkeit und/oder die Intensität der Kühlung (welche geregelt werden kann).
- The temperature of the
cast strip 4 between the casting machine 3 and the subsequent rollingmill 7 is regarded as the decisive variable for monitoring the casting process and for further processing of the cast strip in the production line. This value is influenced by the casting speed and / or the intensity of the cooling (which can be regulated).
Um die Anlage unter optimalen Verhältnissen zu betreiben, muss diese Temperatur innerhalb enger Grenzen gehalten werden. Vorzugsweise wird diese Messung direkt am Austritt der Giessmaschine 3 vorgenommen.In order to operate the system under optimal conditions, this temperature must be kept within narrow limits. This measurement is preferably carried out directly at the outlet of the casting machine 3.
Damit ergibt sich eine Anpassung der Geschwindigkeit des Gussbandes 4 derart, dass die günstigste Temperatur des Bandes dauernd eingehalten wird. Dies kann auf zwei Arten erreicht werden.
- a) Indem die Drehzahl der Walzen des
Walzwerkes 7 durch dasTemperaturmessgerät 5 so gesteuert wird, dass die Drehzahl bei zu tiefer Temperatur entsprechend vergrössert und bei zu hoher Temperatur verkleinert wird. - b) Indem die Intensität der Kühlung durch die automatisch gesteuerten, Im Kühlwasserkreislauf
eingebauten Ventile 14 so geregelt wird, dass sich die optimale Temperatur desGussbandes 4 laufend einstellt, wobei die Temperatur des Gussbandes als Leitwert für die Regelung derVentile 14 dient.
- a) By controlling the speed of the rolls of the rolling
mill 7 by thetemperature measuring device 5 in such a way that the speed is correspondingly increased when the temperature is too low and reduced when the temperature is too high. - b) By regulating the intensity of the cooling by the automatically controlled
valves 14 installed in the cooling water circuit in such a way that the optimum temperature of thecast strip 4 is continuously established, the temperature of the cast strip serving as a guide value for the control of thevalves 14.
3. Eine bestimmte, konstante Bandgeschwindigkeit wird gefordert:
Der Antrieb 10 desWalzwerkes 7 wird durch die Geschwindigkeit des Gussbandes 4 derart gesteuert, dass diese praktisch konstant bleibt.Mit dem Steuergerät 6, 11 wird dabei auch die erforderliche Geschwindigkeit der Giessmaschine 3 geregelt und konstant gehalten.
- The
drive 10 of the rollingmill 7 is controlled by the speed of thecast belt 4 in such a way that it remains practically constant. The required speed of the casting machine 3 is also controlled and kept constant by thecontrol unit 6, 11.
Das hiermit vorgeschlagene Prinzip der Geschwindigkeitsregelung des Antriebes einer Giess- und Walzlinie erfordert ein Minimum an Investitions- und Unterhaltskosten. Zudem hat die erhebliche Verminderung des mechanischen Aufwandes infolge Wegfalls von Bandtreibern und Bandschlaufe eine weitere bedeutende Kostensenkung zur Folge.The principle of speed control of the drive of a casting and rolling line proposed herewith requires a minimum of investment and maintenance costs. In addition, the considerable reduction in mechanical effort due to the elimination of tape drivers and tape loops has resulted in a further significant cost reduction.
Ein zusätzlicher Vorteil besteht darin, dass sich der Platzbedarf für eine Produktionslinie auf ein Minimum reduziert, was sich wiederum in günstigem Sinne auf die Investitionskosten auswirkt.An additional advantage is that the space required for a production line is reduced to a minimum, which in turn has a favorable effect on the investment costs.
Claims (8)
dadurch gekennzeichnet,
dass die durch das erste nach der Giessmaschine angeordnete Walzwerk erzeugte Geschwindigkeit des Gussbandes gemessen wird und diese Geschwindigkeit als Leitwert für die Steuerung des Antriebes der Giessmaschine verwendet wird.1. Method for speed control of a strip casting and rolling plant,
characterized,
that the speed of the cast strip generated by the first rolling mill arranged after the casting machine is measured and this speed is used as a guide value for controlling the drive of the casting machine.
dadurch gekennzeichnet,
dass man ohne zwischen der Giessmaschine und dem anschliessenden Walzwerk angeordnete Bandtreiber arbeitet.2. The method according to claim 1,
characterized,
that one works without a belt driver arranged between the casting machine and the subsequent rolling mill.
dadurch gekennzeichnet,
dass man ohne zwiscnen der Giessmaschine und dem anschliessenden Walzwerk gebildete Bandschlaufe arbeitet.3. The method according to claim 1 or 2,
characterized,
that one works without the belt loop formed between the casting machine and the subsequent rolling mill.
dadurch gekennzeichnet,
dass ohne automatische Regelung der Geschwindigkeit des Antriebes des Walzwerkes gearbeitet wird.4. The method according to any one of claims 1 to 3,
characterized,
that work is carried out without automatic control of the speed of the rolling mill drive.
dadurch gekennzeichnet,
dass man die Geschwindigkeit des Antriebes des Walzwerkes automatisch regelt, indem die Temperatur des Gussbandes nach dem Austritt aus der Giessmaschine als Leitwert dient, wobei die Geschwindigkeit bei zu niedriger Temperatur entsprechend vergrössert und bei zu hoher Temperatur verkleinert wird.5. The method according to any one of claims 1 to 4,
characterized,
that the speed of the drive of the rolling mill is automatically regulated by using the temperature of the cast strip after leaving the casting machine as a guide value, the speed being increased accordingly if the temperature is too low and reduced if the temperature is too high.
dadurch gekennzeichnet,
dass die Regelung der Intensität der Kokillenkühlung der Giessmaschine automatisch erfolgt, indem die Temperatur des Gussbandes nach dem Austritt aus der Giessmaschine als Leitwert für die Regelung der Intensität der Kühlung dient.6. The method according to any one of claims 1 to 5,
characterized,
that the regulation of the intensity of the mold cooling of the casting machine is carried out automatically, in that the temperature of the cast strip after exiting the casting machine serves as a guide value for the regulation of the intensity of the cooling.
dadurch gekennzeichnet,
dass man die Geschwindigkeit des Gussbandes am Austritt der Giessmaschine misst.7. The method according to any one of claims 1 to 6,
characterized,
that the speed of the casting tape at the outlet of the casting machine is measured.
dadurch gekennzeichnet,
dass das erste Walzwerk unmittelbar auf die Giessmaschine folgt, und dass eine Messvorrichtung zur Ermittlung der Geschwindigkeit des Gussbandes sowie eine Steuereinrichtung zur Regelung der Geschwindigkeit der Giessmaschine in Funktion der Gussbandgeschwindigkeit vorgesehen ist.8. strip casting and rolling plant,
characterized,
that the first rolling mill follows directly on the casting machine, and that a measuring device for determining the speed of the casting belt and a control device for regulating the speed of the casting machine as a function of the casting belt speed are provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT79810182T ATE5236T1 (en) | 1978-12-29 | 1979-12-17 | METHOD OF CONTROLLING THE SPEED OF A CONTINUOUS CASTING DEVICE. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH13268/78 | 1978-12-29 | ||
| CH1326878A CH637047A5 (en) | 1978-12-29 | 1978-12-29 | METHOD FOR CONTROLLING THE SPEED OF A BELT CASTING AND ROLLING MACHINE AND SYSTEM CONTROLLED BY THIS METHOD. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0013539A1 true EP0013539A1 (en) | 1980-07-23 |
| EP0013539B1 EP0013539B1 (en) | 1983-11-09 |
Family
ID=4390908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP79810182A Expired EP0013539B1 (en) | 1978-12-29 | 1979-12-17 | Speed control method for a continuous casting installation |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4341259A (en) |
| EP (1) | EP0013539B1 (en) |
| JP (1) | JPS5592220A (en) |
| AT (1) | ATE5236T1 (en) |
| CA (1) | CA1147527A (en) |
| CH (1) | CH637047A5 (en) |
| DE (1) | DE2966402D1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2492696A1 (en) * | 1980-10-27 | 1982-04-30 | Hazelett Strip Casting Corp | METHOD AND DEVICE FOR CONTINUOUS CASTING OF METAL, OF THE TWO-STRIP TYPE |
| WO1992001524A1 (en) * | 1990-07-23 | 1992-02-06 | Davy (Distington) Limited | Method of manufacturing metal strip |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4632176A (en) * | 1985-04-19 | 1986-12-30 | Pearce Ronald A | Apparatus for continuous strip casting of aluminum sheet material |
| KR940008621B1 (en) * | 1985-06-27 | 1994-09-24 | 가와사키세이데쓰 가부시키가이샤 | Casting method & apparatus for endless strip |
| SE452806B (en) * | 1986-04-03 | 1987-12-14 | Asea Ab | PROCEDURE AND DEVICE FOR SPEED DIFFERENCE Saturation during casting |
| DE3806583A1 (en) * | 1988-02-26 | 1989-09-07 | Mannesmann Ag | METHOD IN A CASTING SYSTEM FOR PRODUCING STRINGS |
| US5887645A (en) * | 1996-11-08 | 1999-03-30 | Allegheny Ludlum Corporation | Method and apparatus for continuous casting with speed synchronization |
| WO2006119998A1 (en) * | 2005-05-11 | 2006-11-16 | Corus Staal Bv | Method and apparatus for producing strip having a variable thickness |
| JP4539548B2 (en) | 2005-12-08 | 2010-09-08 | 日本軽金属株式会社 | Aluminum alloy slab continuous casting and rolling line speed synchronization system, and aluminum alloy continuous casting and rolling slab manufacturing equipment and method using the same |
| DE102007058709A1 (en) * | 2007-08-04 | 2009-02-05 | Sms Demag Ag | Method for producing a strip of steel |
| DE102023103265A1 (en) * | 2023-02-10 | 2024-08-14 | Körber Technologies Gmbh | Method for operating a stranding machine in the tobacco processing industry or a stranding machine for producing drinking straws and stranding machine |
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|---|---|---|---|---|
| DE742989C (en) * | 1938-11-15 | 1943-12-15 | Fritz Grah Dipl Ing | Method for the production of rolling stock from a cast strand continuously emerging from a continuous casting mold |
| DE905005C (en) * | 1939-01-04 | 1954-02-25 | Fritz Grah Dipl Ing | Continuous rolling mill |
| DE1508885A1 (en) * | 1965-06-18 | 1969-11-13 | Koppers Co Inc | Device for continuous casting, in particular of metals |
| DE1783132A1 (en) * | 1967-03-06 | 1972-03-23 | Mesta Machine Co | Continuous casting machine |
| US3665743A (en) * | 1968-09-23 | 1972-05-30 | Froehling Fa Josef | Measuring and control apparatus |
| US3861456A (en) * | 1971-08-24 | 1975-01-21 | United States Steel Corp | Mechanism for controlling forces on a strand as it solidifies |
| US3921697A (en) * | 1973-03-22 | 1975-11-25 | Hazelett Strip Casting Corp | Method and apparatus for controlling the operating conditions in continuous metal casting machines having a revolving endless casting belt |
| DE2542290A1 (en) * | 1974-09-26 | 1976-04-08 | Centre Rech Metallurgique | Continuous casting of metals, esp. steel - in which computer calculates billet speed and controls cooling water and billet temp. (NL300376) |
| FR2285947A1 (en) * | 1974-09-26 | 1976-04-23 | Centre Rech Metallurgique | PROCESS FOR CONTROLLING THE CONTINUOUS METAL COLOR |
| FR2384560A1 (en) * | 1977-03-21 | 1978-10-20 | Kabel Metallwerke Ghh | OBLIQUE, PLANETARY LAMINATOR, TO REDUCE ELONGATED PRODUCTS AND PROCESS FOR IMPLEMENTATION |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU38301A1 (en) * | 1959-02-26 | |||
| US3358743A (en) * | 1964-10-08 | 1967-12-19 | Bunker Ramo | Continuous casting system |
| US3510057A (en) * | 1967-05-19 | 1970-05-05 | Bailey Meter Co | Signal scanning discriminator |
| JPS4817145B1 (en) * | 1970-03-07 | 1973-05-26 | ||
| JPS5111746B1 (en) * | 1970-06-11 | 1976-04-13 | ||
| US3726333A (en) * | 1971-07-07 | 1973-04-10 | Gen Motors Corp | Control of continuous casting operation |
| US3864973A (en) * | 1973-03-22 | 1975-02-11 | Hazelett Strip Casting Corp | Method and apparatus for determining the operating conditions in continuous metal casting machines of the type having a revolving endless casting belt |
| JPS5477229A (en) | 1977-11-22 | 1979-06-20 | Ishikawajima Harima Heavy Ind | Method and apparatus for controlling drawing speed and mold level in continuous casting machine |
-
1978
- 1978-12-29 CH CH1326878A patent/CH637047A5/en not_active IP Right Cessation
-
1979
- 1979-12-17 DE DE7979810182T patent/DE2966402D1/en not_active Expired
- 1979-12-17 EP EP79810182A patent/EP0013539B1/en not_active Expired
- 1979-12-17 AT AT79810182T patent/ATE5236T1/en not_active IP Right Cessation
- 1979-12-18 US US06/104,794 patent/US4341259A/en not_active Expired - Lifetime
- 1979-12-28 JP JP17392579A patent/JPS5592220A/en active Granted
- 1979-12-31 CA CA000342848A patent/CA1147527A/en not_active Expired
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE742989C (en) * | 1938-11-15 | 1943-12-15 | Fritz Grah Dipl Ing | Method for the production of rolling stock from a cast strand continuously emerging from a continuous casting mold |
| DE905005C (en) * | 1939-01-04 | 1954-02-25 | Fritz Grah Dipl Ing | Continuous rolling mill |
| DE1508885A1 (en) * | 1965-06-18 | 1969-11-13 | Koppers Co Inc | Device for continuous casting, in particular of metals |
| DE1783132A1 (en) * | 1967-03-06 | 1972-03-23 | Mesta Machine Co | Continuous casting machine |
| US3665743A (en) * | 1968-09-23 | 1972-05-30 | Froehling Fa Josef | Measuring and control apparatus |
| US3861456A (en) * | 1971-08-24 | 1975-01-21 | United States Steel Corp | Mechanism for controlling forces on a strand as it solidifies |
| US3921697A (en) * | 1973-03-22 | 1975-11-25 | Hazelett Strip Casting Corp | Method and apparatus for controlling the operating conditions in continuous metal casting machines having a revolving endless casting belt |
| DE2542290A1 (en) * | 1974-09-26 | 1976-04-08 | Centre Rech Metallurgique | Continuous casting of metals, esp. steel - in which computer calculates billet speed and controls cooling water and billet temp. (NL300376) |
| FR2285947A1 (en) * | 1974-09-26 | 1976-04-23 | Centre Rech Metallurgique | PROCESS FOR CONTROLLING THE CONTINUOUS METAL COLOR |
| FR2384560A1 (en) * | 1977-03-21 | 1978-10-20 | Kabel Metallwerke Ghh | OBLIQUE, PLANETARY LAMINATOR, TO REDUCE ELONGATED PRODUCTS AND PROCESS FOR IMPLEMENTATION |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2492696A1 (en) * | 1980-10-27 | 1982-04-30 | Hazelett Strip Casting Corp | METHOD AND DEVICE FOR CONTINUOUS CASTING OF METAL, OF THE TWO-STRIP TYPE |
| WO1992001524A1 (en) * | 1990-07-23 | 1992-02-06 | Davy (Distington) Limited | Method of manufacturing metal strip |
| AU645591B2 (en) * | 1990-07-23 | 1994-01-20 | Pohang Iron & Steel Co., Ltd. | Method of manufacturing metal strip |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0130585B2 (en) | 1989-06-21 |
| ATE5236T1 (en) | 1983-11-15 |
| CH637047A5 (en) | 1983-07-15 |
| CA1147527A (en) | 1983-06-07 |
| JPS5592220A (en) | 1980-07-12 |
| EP0013539B1 (en) | 1983-11-09 |
| US4341259A (en) | 1982-07-27 |
| DE2966402D1 (en) | 1983-12-15 |
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