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EP2560774B1 - Arrangement and method for controlling a casting powder feed of a continuous casting plant - Google Patents

Arrangement and method for controlling a casting powder feed of a continuous casting plant Download PDF

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Publication number
EP2560774B1
EP2560774B1 EP11712212.7A EP11712212A EP2560774B1 EP 2560774 B1 EP2560774 B1 EP 2560774B1 EP 11712212 A EP11712212 A EP 11712212A EP 2560774 B1 EP2560774 B1 EP 2560774B1
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EP
European Patent Office
Prior art keywords
casting powder
bath level
casting
measuring device
signal
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.)
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Application number
EP11712212.7A
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German (de)
French (fr)
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EP2560774A1 (en
Inventor
Holger Beyer-Steinhauer
Uwe Plociennik
Wolfgang Schmitz
Christof Rosenbaum
Ralf Thome
Volker Ostheimer
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SMS Group GmbH
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SMS Group GmbH
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Publication of EP2560774A1 publication Critical patent/EP2560774A1/en
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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
    • B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
    • B22D2/003—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass for the level of the molten metal
    • 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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/108—Feeding additives, powders, or the like
    • 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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/111—Treating the molten metal by using protecting powders
    • 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
    • B22D11/165—Controlling or regulating processes or operations for the supply of casting powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
    • B22D2/006—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass for the temperature of the molten metal

Definitions

  • the invention relates to an arrangement for controlling the G confusepulveraufgabe a continuous casting, comprising a first measuring device, a second measuring device, a computer unit and a G manpulveretzgabe listening, wherein the first measuring device measures the BadLite Hab in the continuous casting mold and generates the height of the bath level in the continuous casting mold indicating first signal and to a computer unit, wherein the second measuring device measures the temperature of the casting powder on the surface of the bath level and generates a second signal indicating the temperature of the casting powder on the surface of the bath level in the continuous casting mold and sends it to the computer unit and wherein the computer unit receives the first signal the first measuring device and the second signal of the second measuring device evaluates and controls a Gleßpulveretzgabe perceived.
  • the invention relates to a method for controlling the Gleßpulveraufgabe a continuous casting.
  • the surface of the molten bath in the continuous casting mold with a casting powder also called cover powder to cover.
  • the casting powder consisting of ground oxidic and carbonate materials has the task of avoiding unnecessary heat radiation, preventing reoxidation, ensuring lubrication between the cooled mold wall and the strand shell and binding oxidic inclusions.
  • an arrangement for controlling the application of casting powder to the bath surface in the mold of a continuous casting plant which comprises a transmitting device for emitting light of predetermined intensity, which is directed to the bath surface, a receiving device for receiving the light reflected on the bath surface and for converting the received light into an electrical signal and an intensity check circuit connected to the output of the receiving means, which provides a dependent on the intensity of the received light signal, which is used to control the G confusepulverillergabe or Gleßpulveraufgabergic.
  • this control arrangement has a complex and expensive construction.
  • this type of control can easily lead to a faulty control of G confuse.
  • the US 2001/0139507 A1 describes the possibilities of controlling the casting powder application on the basis of the measured surface temperature of a melt stream or alternatively on the basis of the height of the melt stream.
  • The. DE 24 25 381 A1 discloses a method in which, by means of a radiation-sensitive measuring element, the thickness distribution of the casting powder is measured on the bath mirror surface.
  • the invention is therefore based on the object to provide an arrangement and a method for controlling a G manpulveraufgabe achieved a continuous casting available, which is characterized by improved genitality.
  • the inventive arrangement for controlling a G confusepulveraufgabe or a G manpulveraufgabee acquired at a Stranggleßstrom has a first measuring device for determining the height of a bath level in a continuous casting mold and generating a corresponding first signal, a second measuring device for determining the temperature of the casting powder on the surface of the bath level in the continuous casting mold and generating a corresponding second signal, and a computer unit controlling the first signal and the second signal, and a computer unit controlling a cast powder dispenser.
  • the first measuring device for measuring the level of the bath level is preferably designed in the form of a Berthold measuring device and arranged on the continuous casting mold.
  • the arrangement according to the invention is characterized in that two different, measured signals are used to control the casting powder application.
  • a particularly accurate control of G stealpulveraufgabe is possible, with fault tolerances can be largely avoided.
  • To control the casting powder task both the measured height of the bath level in the continuous casting mold and the measured temperature of the casting powder on the surface of the bath level are used. These two measured signals are evaluated together in a common computer unit, wherein from these two signals, the delivery rate of the casting powder to be abandoned and the position at which the G confusepulverillergabe should take place on the bath surface, and is passed to the G confusepulveretzgabe interference.
  • the second measuring device is preferably designed in the form of an optical image processing unit.
  • the invention therefore provides in an embodiment that the second measuring device is embodied in the form of an optical image evaluation unit which has a thermal imaging camera and a deflection device in the form of a reflection system formed by a mirror system, wherein the deflection device emits the casting powder arranged on the surface of the bath mirror Heat radiation in the direction of the thermal imaging camera deflects.
  • the optical image evaluation unit registers the state of the casting powder on the BadLiteober Certain sequences can be used and any number of measurement points for the state of the casting powder can be generated. It is always possible to access the data obtained, so that optionally the evaluation method is adjusted or varied accordingly can be. Furthermore, moving images over the time of the entire melting process or casting process can clearly illustrate the process in the continuous casting mold.
  • the continuous casting mold is preferably provided in its upper region with markings which can be illuminated by a light source and clearly detected with the optical image evaluation unit, in particular with the image acquisition and its evaluation unit of the optical image evaluation unit can.
  • the second measuring device embodied as an optical image evaluation unit preferably has a thermal imaging camera and a deflection device for deflecting the thermal radiation emitted by the casting powder arranged on the surface of the bath level in the direction of the thermal imaging camera.
  • a thermal imaging camera also called a thermographic camera
  • infrared radiation can be received.
  • the thermal imaging camera the invisible to the human eye heat radiation of the arranged on the surface of the bath level casting powder can be made visible. As a result, temperature distributions can be detected and displayed over the entire surface of the casting powder arranged on the bath surface.
  • the thermal imaging camera is arranged at a certain distance from the casting powder to be measured, wherein the heat radiation emitted by the casting powder is directed via a deflection device in the direction of the thermal imaging camera.
  • the thermal imaging camera can be arranged as protected as possible against the influence of the direct and total heat radiation of the continuous casting mold and the melt bath contained therein.
  • the deflection device preferably has a reflection system.
  • a reflection system as a deflection device, a particularly simple and cost-effective deflection device can be provided.
  • the reflection system can, for example, one or more mirrors be formed, which receive the heat radiation from the casting powder on the BadLiteober Structure and which are aligned so that they reflect the received heat radiation in the direction of the thermal imager.
  • the reflection system preferably has a reflectance of about 100%.
  • the deflecting device is preferably arranged on a side of the immersion tube inserted into the continuous casting mold or on the same side as the cast powder feeding device, opposite to the casting powder dispensing device. If the deflecting device is arranged on the side of the immersion tube inserted into the continuous casting mold, it is possible to minimize the influence on the deflecting device when adding or dispensing molding powder via the granulating powder feeding device into the continuous casting mold.
  • the deflection device comprises a first deflection and a second deflection unit, wherein the first deflection unit and the second deflection unit are respectively arranged on opposite sides of an inserted into the continuous casting mold immersion tube.
  • the deflection device has optical waveguides. Due to the use of optical fibers is a particularly high transmission rate of infrared radiation towards the thermal imaging camera possible, wherein losses in the transmission of the emitted from the casting powder on the Badsplegelober Assembly heat radiation to the thermal imaging camera can be largely prevented.
  • the deflection device is preferably arranged in a housing, wherein the housing has an air supply. Through the air supply, a continuous flow of air can be ensured within the housing. Air can be directed in the direction of the deflection device via the air feed, wherein the deflection device can be cooled by the air circulating in the housing. As a result, the life of the deflection device and thus of the optical image evaluation unit can be increased.
  • the second measuring device has a dust protection device.
  • the addition of casting powder into the continuous casting mold usually results in a strong formation of dust.
  • the dust protection device it is possible to prevent the dust from penetrating into the second measuring device, which would lead to contamination of the components provided in the measuring device, such as the thermal imaging camera and the deflection device, as a result of which the measurement results could be falsified.
  • the dust protection device may preferably have one or more air-blocking nozzles.
  • compressed air can be blown across the air-blocking nozzles transversely to the direction in which the dust of the supplied casting powder rises. This can prevent that the dust can penetrate into the housing of the second measuring device.
  • it may be provided in such a way that only during the addition of the casting powder into the continuous casting mold an increased air flow in the form of compressed air is blown out via the air blocking nozzles.
  • the dust protection device has a closable opening on the housing of the second measuring device.
  • the deflection device is preferably provided in the region of the closable opening, wherein during the measurement of the temperature of the casting powder on the BadLiteober Assembly when no G manpulverzugabe takes place, the opening is open, so that the heat radiation can be absorbed by the deflection and forwarded.
  • the opening can be closed, for example, with a flap, so that the housing is closed during the addition of the powder and no dust can penetrate into the housing.
  • the opening can be opened again so that the measurement can be continued.
  • the invention further relates to a method for controlling a G stealpulverankgabe at a continuous casting, wherein by means of a first measuring device determines the height of a bath mirror In a continuous casting mold and a corresponding first signal is generated and in which by means of a second measuring device, the temperature of the on the surface of the bath mirror in the continuous casting mold arranged casting powder and a corresponding second signal is generated, wherein the first signal of the first measuring device and the second signal of the second measuring device sent to a computer unit and the computer unit with respect to the height of the bath level and with respect to the temperature of the casting powder on the surface the bath level is evaluated and passed to a G confusepulverillergabe noise that a G manpulverillergabe only takes place when the BadLiteière between a maximum allowable and a minimum allowable Ba dadorconce is located, and that increases too high a temperature of the casting powder on the surface of the bath level, the delivery rate of the Gleßpulverankgabe recognized and at too low a temperature of the casting powder on the surface of
  • Fig. 1 a and Fig. 1b schematically show two different embodiments of an inventive arrangement for controlling a G manpulveraufgabe 10 a continuous casting with a first measuring device, not shown here, for Determining the height of a bath level 12 in a continuous casting mold 14 and a second measuring device 16 for determining the temperature of the casting powder 18 on the surface of the bath level 12 in the continuous casting mold 14.
  • a Gleßpulveraufgabe By means of the data measured via the first measuring device and the second measuring device 16, a Gleßpulveraufgabe worn 28th selectively controlled and controlled with respect to the casting powder application or casting powder addition 10 caused thereby on the surface of the bath mirror 12 of the molten bath 22.
  • the first measuring device for determining the height of the bath mirror 12 is preferably arranged within the continuous casting mold 14, wherein the first measuring device is designed, for example, in the form of a Berthold measuring device.
  • the second measuring device 16 is embodied in the form of an optical image evaluation unit, which comprises a thermal imaging camera 24 and a deflection device 26 in the form of a reflection system formed by a mirror system.
  • an optical image evaluation unit which comprises a thermal imaging camera 24 and a deflection device 26 in the form of a reflection system formed by a mirror system.
  • the deflection device 26 can, as in Fig. 1a can be seen, be arranged in an area above the continuous casting mold 14, which is the furthest away from the area where the G manpulveraufgabe 10 is carried out so that the deflection device 26 seen from the G foolpulveraufgabe listening 28 from behind an inserted into the continuous casting mold 14 dip tube 20 , Accordingly, the deflection device 26 is preferably arranged on one of the Gleßpulveraufgabe listening 28 opposite side of the strand casting mold 14. Depending on the installation conditions, it may also be useful, as in Fig. 1b shown, the deflecting device 26 is provided in front of the dip tube 20, on the same side as the G confusepulverillergabe listening 28 is provided. The deflection device 26 is provided above the G confusergic tract observed 28.
  • the deflection device 26 is arranged in a housing 30 which directly adjoins the thermal imaging camera 24.
  • the housing 30 has an air feed 32, via which air can be introduced into the housing 30, so that an air circulation is provided in the housing 30, which can bring about cooling of the deflection device 26.
  • the second measuring device 16 has a dust protection device, not shown here, which can be used, for example, as one or more air-blocking nozzles or a can be formed on the housing 30 provided closable opening.
  • a first signal indicating the height of the bath level 12 is generated by the first measuring device and sent to a computer unit 36.
  • a second the temperature of the casting powder 18 on the surface of the bath mirror 12 indicative signal is generated and also sent to the computer unit 36.
  • the computer unit 36 evaluates the first signal and the second signal and generates from these two signals information or more information about the required delivery rate of about the G confusepulverillergabe sexual 28 in the continuous casting mold 14 abandoned casting powder 18 and the position at which the G confusepulverillergabe 10 on the Surface of the bath mirror 12 done which is passed on to the G confusepulveraufgabe listening 28 / will be.
  • the casting powder dispensing device 28 can start with the optimized values, whereby the entire control process of the casting powder task 10 can be further optimized.
  • the casting powder task 10 is preferably carried out at periodic intervals, although it can be adapted or appropriately controlled in accordance with the values determined by the computer unit 36. Characterized in that in the inventive arrangement, the measured data with respect to the height of the bath mirror 12 and with respect to the temperature of the casting powder 18 on the surface of the bath mirror 12 are set by the computer unit 36 in relation to each other and instructions to the G confusepulveraufgabeelnraum 28 are generated from these two data , the control of G confusepulveraufgabe 10 can be significantly optimized over previously known controls.
  • Fig. 2 shows a plan view of the second measuring device 16 according to the invention with the thermal imaging camera 24 and arranged in the housing 30 deflecting device 26, wherein it can be seen that the deflection device 26 has a first deflecting unit 38 and a second deflecting unit 40, wherein the first deflecting unit 38 and the second deflecting unit 40 are respectively arranged on opposite sides of the inserted into the continuous casting mold 14 dip tube 20 are.
  • the deflection units 38, 40 of the deflection device 26 can be behind the dip tube 20, as in Fig. 1a shown, or in front of the dip tube 20, as in Fig. 1b shown to be arranged.
  • Fig. 3 and Fig. 4 show two possible variants of a control of G confusepulverillergabe 10 of the Gleßpulveraufgabe raised 28 by means of a respective flowchart in the form of a block diagram.
  • the control of the G confusepulverillergabe 10 can be done by varying the time interval .DELTA.Z between the output cycles at a constant casting powder amount m, as in Fig. 3 shown schematically, or by varying the amount m of the discontinued casting powder at constant duty cycles, such as In Fig. 4 shown schematically.
  • the casting powder task 10 preferably takes place only when the height H of the bath level is between the positions of the maximum permissible bath level height H max and the minimum permissible level of the bath level H min .
  • the height H of the bath level is also first determined. If the height H of the bath level lies between the maximum permissible bath level height H max and the minimum permissible bath level height H min , the temperature T of the bath level is determined in a next step. If this temperature T of the bath level is greater than the maximum permissible temperature T max of the bath level, a signal is given that a casting powder application is to take place, the amount of casting powder m being increased by a change ⁇ m of the amount of casting powder m. As soon as the casting powder quantity m is greater than the maximum admissible amount of powdered powder m_max, a message is issued.
  • the amount of casting powder m is reduced. If the amount of casting powder falls below the minimum permissible quantity of casting powder m_min, a message is again issued.

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

Description

Die Erfindung betrifft eine Anordnung zur Steuerung der Gießpulveraufgabe einer Stranggießanlage, umfassend eine erste Messeinrichtung, eine zweite Messeinrichtung, eine Rechnereinheit und eine Gießpulveraufgabeeinrichtung, wobei die erste Messeinrichtung die Badspiegelhöhe in der Stranggießkokille misst und ein die Höhe des Badspiegels In der Stranggießkokille angebendes erstes Signal erzeugt und an eine Rechnereinheit sendet, wobei die zweite Messeinrichtung die Temperatur des Gießpulvers auf der Oberfläche des Badspiegels misst und ein die Temperatur des Gießpulvers auf der Oberfläche des Badspiegels in der Stranggießkokille angebendes zweites Signal erzeugt und an die Rechnereinheit sendet und wobei die Rechnereinheit das erste Signal der ersten Messvorrichtung und das zweite Signal der zweiten Messvorrichtung auswertet und eine Gleßpulveraufgabeeinrichtung steuert.The invention relates to an arrangement for controlling the Gießpulveraufgabe a continuous casting, comprising a first measuring device, a second measuring device, a computer unit and a Gießpulveraufgabeeinrichtung, wherein the first measuring device measures the Badspiegelhöhe in the continuous casting mold and generates the height of the bath level in the continuous casting mold indicating first signal and to a computer unit, wherein the second measuring device measures the temperature of the casting powder on the surface of the bath level and generates a second signal indicating the temperature of the casting powder on the surface of the bath level in the continuous casting mold and sends it to the computer unit and wherein the computer unit receives the first signal the first measuring device and the second signal of the second measuring device evaluates and controls a Gleßpulveraufgabeeinrichtung.

Weiterhin betrifft die Erfindung ein Verfahren zur Steuerung der Gleßpulveraufgabe einer Stranggießanlage.Furthermore, the invention relates to a method for controlling the Gleßpulveraufgabe a continuous casting.

Für den einwandfreien Betrieb von Stranggießanlagen ist es aus metallurgischen und prozesstechnischen Gründen notwendig, die Oberfläche des Schmelzbads in der Stranggießkokille mit einem Gießpulver, auch Abdeckpulver genannt, zu bedecken. Das aus gemahlenen oxidischen und karbonatischen Materialien bestehende Gießpulver hat unter anderem die Aufgabe unnötige Wärmestrahlungen zu vermeiden, eine Reoxidation zu verhindern, eine Schmierung zwischen der gekühlten Kokillenwand und der Strangschale zu gewährleisten und oxidische Einschlüsse zu binden.For the proper operation of continuous casting plants, it is necessary for metallurgical and process engineering reasons, the surface of the molten bath in the continuous casting mold with a casting powder, also called cover powder to cover. Among other things, the casting powder consisting of ground oxidic and carbonate materials has the task of avoiding unnecessary heat radiation, preventing reoxidation, ensuring lubrication between the cooled mold wall and the strand shell and binding oxidic inclusions.

Dabei ist es wichtig, dass das Gießpulver zeitgerecht und richtig dosiert dem Schmelzbad zugeführt wird. Die Zuführung erfolgt dabei meist über automatisierte Gießpulverzuführeinrichtungen oder Gießpulveraufgabeeinrichtungen, wobei es möglich ist, die Zugabe von Gießpulver in fest eingestellten Zeitintervallen vorzunehmen. Diese Art der Zugabe ist jedoch aufgrund vieler Einflussgrößen, die den Verbrauch an Gießpulver durch Abbrand und Mitnahme verändem können, nur wenig geeignet.It is important that the casting powder is added to the molten bath in a timely and properly dosed manner. The supply is usually carried out by automated Gießpulverzuführeinrichtungen or Gießpulveraufgabeeinrichtungen, wherein it is possible to make the addition of casting powder in fixed time intervals. However, this type of addition is due to many factors that can change the consumption of casting powder by burning and entrainment, little suitable.

Aus der DE 34 00 896 A1 ist eine Anordnung zur Steuerung des Aufbringens von Gießpulver auf die Badoberfläche in der Kokille einer Stranggießanlage bekannt, welche eine Sendeeinrichtung zur Aussendung von Licht vorgegebener Intensität, das auf die Badoberfläche gerichtet ist, eine Empfangseinrichtung zum Empfang des an der Badoberfläche reflektierten Lichtes und zur Umwandlung des empfangenen Lichtes in ein elektrisches Signal und eine durch eine an den Ausgang der Empfangseinrichtung angeschlossene Intensitätsprüfschaltung aufweist, die ein von der Intensität des empfangenen Lichtes abhängiges Signal liefert, das zur Steuerung der Gießpulveraufgabe oder Gleßpulveraufgabeeinrichtung verwendet wird. Diese Steuerungsanordnung weist jedoch einen aufwendigen und kostenintensiven Aufbau auf. Zudem kann diese Art der Steuerung leicht zu einer Fehlsteuerung der Gießpulveraufgabe führen.From the DE 34 00 896 A1 an arrangement for controlling the application of casting powder to the bath surface in the mold of a continuous casting plant is known which comprises a transmitting device for emitting light of predetermined intensity, which is directed to the bath surface, a receiving device for receiving the light reflected on the bath surface and for converting the received light into an electrical signal and an intensity check circuit connected to the output of the receiving means, which provides a dependent on the intensity of the received light signal, which is used to control the Gießpulveraufgabe or Gleßpulveraufgabeeinrichtung. However, this control arrangement has a complex and expensive construction. In addition, this type of control can easily lead to a faulty control of Gießpulveraufgabe.

Aus der JP 62252648 A ist ein Verfahren zur Steuerung einer Gießpulveraufgabe bekannt, bei welchem mittels einer Thermokamera eine Temperaturvertellung über die Oberfläche der Gießpulverschlacke ermittelt wird, mittels welcher anschließend die Dickenverteilung der Gleßpulverschlacke in der Schmelze bestimmt wird.From the JP 62252648 A a method for controlling a Gießpulveraufgabe is known in which by means of a thermal camera Temperaturvertellung on the surface of the Gießpulverschlacke is determined by means of which subsequently the thickness distribution of the Gleßpulverschlacke is determined in the melt.

Die US 2001/0139507 A1 beschreibt die Möglichkeiten, die Gießpulveraufgabe anhand der gemessenen Oberflächentemperatur eines Schmelzestromes oder alternativ anhand der Höhe des Schmelzestandes zu steuern.The US 2001/0139507 A1 describes the possibilities of controlling the casting powder application on the basis of the measured surface temperature of a melt stream or alternatively on the basis of the height of the melt stream.

Aus der JP 62270263 A ist ein Verfahren zur Steuerung der Gießpulveraufgabe bekannt, bei welchem mittels der Messung des Pegelstandes des Gießpulvers und des Pegelstandes des geschmolzenen Stahles eine konstante Dicke der Gießpulverschicht aufrechterhalten wird.From the JP 62270263 A There is known a method for controlling the casting powder feeding, in which a constant thickness of the casting powder layer is maintained by the measurement of the level of the casting powder and the level of the molten steel.

Die. DE 24 25 381 A1 offenbart ein Verfahren, bei welchem mittels eines strahlungsempfindlichen Messorganes die Dickenvertellung des Gießpulvers auf der Badspiegelfläche gemessen wird.The. DE 24 25 381 A1 discloses a method in which, by means of a radiation-sensitive measuring element, the thickness distribution of the casting powder is measured on the bath mirror surface.

Aus der JP 09076050 A Ist eine gattungsgemäße Anordnung zur Steuerung der Gießpulveraufgabe bekannt. Zur Steuerung der Gießpulveraufgabe werden hier drei Messsignale ermittelt, nämlich ein die Badspiegelhöhe repräsentierendes Messsignal, ein die Gießpulverschichthöhe repräsentierendes Messsignal und ein Wärmebildsignal. Diese drei Signale werden zur Steuerung der Gießpulveraufgabe herangezogen.From the JP 09076050 A Is a generic arrangement for controlling the Gießpulveraufgabe known. To control the casting powder task, three measurement signals are determined here, namely a measurement signal representing the bath level height, a measurement signal representing the cast powder layer height, and a thermal image signal. These three signals are used to control the casting powder task.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Anordnung und ein Verfahren zur Steuerung einer Gießpulveraufgabeeinrichtung einer Stranggießanlage zur Verfügung zu stellen, welche sich durch eine verbesserte Genaulgkeit auszeichnet.The invention is therefore based on the object to provide an arrangement and a method for controlling a Gießpulveraufgabeeinrichtung a continuous casting available, which is characterized by improved genitality.

Die Lösung der Aufgabe erfolgt erfindungsgemäß durch die Merkmale der Ansprüche 1 und 10. Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.The object is achieved according to the invention by the features of claims 1 and 10. Advantageous embodiments of the invention are specified in the subclaims.

Die erfindungsgemäße Anordnung zur Steuerung einer Gießpulveraufgabe oder einer Gießpulveraufgabeeeinrichtung an einer Stranggleßanlage weist eine erste Messeinrichtung zur Bestimmung der Höhe eines Badspiegels in einer Stranggießkokille und Erzeugung eines entsprechenden ersten Signals, eine zweite Messeinrichtung zur Bestimmung der Temperatur des Gießpulver auf der Oberfläche des Badspiegels in der Stranggießkokille und Erzeugung eines entsprechenden zweiten Signals, und eine das erste Signal und das zweite Signal auswertende Rechnereinheit und eine Gießpulveraufgabeeinrichtung steuernde Rechnereinheit auf.The inventive arrangement for controlling a Gießpulveraufgabe or a Gießpulveraufgabeeeinrichtung at a Stranggleßanlage has a first measuring device for determining the height of a bath level in a continuous casting mold and generating a corresponding first signal, a second measuring device for determining the temperature of the casting powder on the surface of the bath level in the continuous casting mold and generating a corresponding second signal, and a computer unit controlling the first signal and the second signal, and a computer unit controlling a cast powder dispenser.

Die erste Messeinrichtung zur Messung der Badspiegelhöhe Ist vorzugsweise in Form eines Berthold-Messgeräts ausgebildet und an der Stranggießkokille angeordnet. Die erfindungsgemäße Anordnung zeichnet sich dadurch aus, dass zur Steuerung der Gießpulveraufgabe zwei unterschiedliche, gemessene Signale verwendet werden. Dadurch ist eine besonders exakte Steuerung der Gießpulveraufgabe möglich, wobei Fehlertoleranzen weitgehend vermieden werden können. Zur Steuerung der Gießpulveraufgabe wird dabei sowohl die gemessene Höhe des Badspiegels in der Stranggießkokille als auch die gemessene Temperatur des Gießpulvers auf der Oberfläche des Badspiegels verwendet. Diese beiden gemessenen Signale werden in einer gemeinsamen Rechnereinheit zusammen ausgewertet, wobei aus diesen beiden Signalen die Fördermenge des aufzugebenden Gießpulvers und die Position, an welcher die Gießpulveraufgabe auf der Badoberfläche erfolgen soll, ermittelt wird und an die Gießpulveraufgabeeinrichtung weitergegeben wird. Werden mittels der zweiten Messeinrichtung zu hohe Temperaturen gemessen, beispielsweise wenn das Gießpulver auf der Badspiegeloberfläche geschmolzen ist, wird ein Signal "zu heiß" generiert. Werden zu niedrige Temperaturen gemessen, beispielsweise wenn der Gießpulverschicht auf der Badspiegeloberfläche zu dick ist, wird ein Signal "zu kalt" generiert. In der Rechnereinheit werden die zeitliche Gießpulveraufgabe und die Gießpulvermenge entsprechend der verwendeten Stahlsorte und der Gießgeschwindigkeit optimiert und gespeichert. Wird der Stahl zu einem späteren Zeitpunkt wieder gegossen, so kann die Gießpulveraufgabe mit den optimierten Werten starten, wodurch der gesamte Steuerungsprozess der Gießpulveraufgabe weiter optimiert werden kann. Die Gießpulveraufgabe erfolgt dabei vorzugsweise in periodischen Abständen, wobei sie jedoch entsprechend der durch die Rechnereinheit ermittelten Werte anpassbar bzw. entsprechend gesteuert werden kann. Erhält die Gießpulveraufgabeeinrichtung das Signal "zu heiß" von der Rechnereinheit wird vorzugsweise sofort Gießpulver der Stranggießkokille zugeführt. Bei dem Signal "zu kalt" wird die Periodendauer verlängert bzw. die zugeführte Menge an Gießpulver reduziert.The first measuring device for measuring the level of the bath level is preferably designed in the form of a Berthold measuring device and arranged on the continuous casting mold. The arrangement according to the invention is characterized in that two different, measured signals are used to control the casting powder application. As a result, a particularly accurate control of Gießpulveraufgabe is possible, with fault tolerances can be largely avoided. To control the casting powder task, both the measured height of the bath level in the continuous casting mold and the measured temperature of the casting powder on the surface of the bath level are used. These two measured signals are evaluated together in a common computer unit, wherein from these two signals, the delivery rate of the casting powder to be abandoned and the position at which the Gießpulveraufgabe should take place on the bath surface, and is passed to the Gießpulveraufgabeeinrichtung. If too high temperatures are measured by means of the second measuring device, for example if the casting powder has melted on the surface of the bath mirror, a signal "too hot" is generated. Become measured low temperatures, for example, if the Gießpulverschicht is too thick on the Badspiegeloberfläche, a signal is generated "too cold". In the computer unit the temporal Gießpulveraufgabe and Gießpulvermenge be optimized and stored according to the steel grade and the casting speed used. If the steel is poured again at a later time, the casting powder application can start with the optimized values, whereby the entire control process of the casting powder application can be further optimized. The casting powder application is preferably carried out at periodic intervals, but it can be adapted or appropriately controlled in accordance with the values determined by the computer unit. Does the Gießpulveraufgabeeinrichtung the signal "too hot" from the computer unit is preferably immediately supplied casting powder of the continuous casting mold. In the case of the signal "too cold", the period is extended or the supplied amount of casting powder is reduced.

Die zweite Messeinrichtung ist vorzugsweise in Form einer optischen Bildauswer tungseinheit ausgebildet. Die Erfindung sieht in Ausgestaltung daher vor, dass die zweite Messeinrichtung in Form einer optischen Bildauswertungseinheit ausgebildet Ist, die eine Wärmebildkamera und eine Umlenkvorrichtung in Form eines aus einem Spiegelsystem gebildeten Reflexionssystems aufweist, wobei die Umlenkvorrichtung die von dem auf der Oberfläche des Badspiegels angeordneten Gießpulver ausgesendete Wärmestrahlung in Richtung der Wärmebildkamera umlenkt. Mittels der optischen Bildauswertungseinhelt Ist eine direkte, berührungslose Ermittlung des Zustands des Gießpulvers auf der Oberfläche des Badspiegels, Insbesondere die Temperatur dieses Gießpulvers, während des ganzen Schmelzverfahrens bzw. Gießverfahrens möglich. Die optische Bildauswertungseinheit registriert den Zustand des Gießpulvers auf der Badspiegeloberfläche während des gesamten Zeitverlaufes, so dass jederzeit auf bestimmte Sequenzen zurückgegriffen werden kann und beliebig viele Messpunkte für den Zustand des Gießpulvers generierbar sind. Es Ist jederzeit ein Zugriff auf die ermittelten Daten möglich, so dass gegebenenfalls die Auswertemethode entsprechend angepasst bzw. variiert werden kann. Ferner können bewegte Bilder über die Zeit des gesamten Schmelzverfahrens bzw. Gießverfahrens den Vorgang in der Stranggießkokille anschaulich verdeutlichen. Um optimale Messergebnisse mit der optischen Bildauswertungseinheit erhalten zu können, ist die Stranggießkokille in ihrem oberen Bereich vorzugsweise mit Markierungen versehen, welche mit einer Lichtquelle ausgeleuchtet werden können und eindeutig mit der optischen Bildauswertungseinheit, insbesondere mit der Bildererfassung und deren Auswertungseinheit der optischen Bildauswertungseinheit, erfasst werden können.The second measuring device is preferably designed in the form of an optical image processing unit. The invention therefore provides in an embodiment that the second measuring device is embodied in the form of an optical image evaluation unit which has a thermal imaging camera and a deflection device in the form of a reflection system formed by a mirror system, wherein the deflection device emits the casting powder arranged on the surface of the bath mirror Heat radiation in the direction of the thermal imaging camera deflects. By means of the optical Bildauswertungseinhelt Is a direct, non-contact determination of the state of the casting powder on the surface of the bath level, in particular the temperature of this casting powder, during the entire melting process or casting process possible. The optical image evaluation unit registers the state of the casting powder on the Badspiegeloberfläche during the entire time course, so that at any time to certain sequences can be used and any number of measurement points for the state of the casting powder can be generated. It is always possible to access the data obtained, so that optionally the evaluation method is adjusted or varied accordingly can be. Furthermore, moving images over the time of the entire melting process or casting process can clearly illustrate the process in the continuous casting mold. In order to be able to obtain optimum measurement results with the optical image evaluation unit, the continuous casting mold is preferably provided in its upper region with markings which can be illuminated by a light source and clearly detected with the optical image evaluation unit, in particular with the image acquisition and its evaluation unit of the optical image evaluation unit can.

Die als optische Bildauswertungseinheit ausgebildete zweite Messeinrichtung weist bevorzugt eine Wärmebildkamera und eine Umlenkvorrichtung zur Umlenkung der von dem auf der Oberfläche des Badspiegels angeordneten Gießpulver ausgesendeten Wärmestrahlung in Richtung der Wärmebildkamera auf. Mittels der Wärmebildkamera, auch Thermografle-Kamera genannt, können Infrarotstrahlungen empfangen werden. Mittels der Wärmebildkamera kann die für das menschliche Auge unsichtbare Wärmestrahlung des auf der Oberfläche des Badspiegels angeordneten Gießpulvers sichtbar gemacht werden. Dadurch können Temperaturverteilungen über die gesamte Fläche des auf der Badoberfläche angeordneten Gießpulvers erfasst und dargestellt werden. Die Wärmebildkamera ist dabei in einem bestimmten Abstand zu dem zu messenden Gießpulver angeordnet, wobei die von dem Gießpulver ausgesendete Wärmestrahlung über eine Umlenkvorrichtung in Richtung der Wärmebildkamera gelenkt wird. Dadurch kann die Wärmebildkamera möglichst geschützt vor dem Einfluss der direkten und gesamten Wärmestrahlung der Stranggießkokille und des darin enthaltenden Schmelzbades angeordnet sein.The second measuring device embodied as an optical image evaluation unit preferably has a thermal imaging camera and a deflection device for deflecting the thermal radiation emitted by the casting powder arranged on the surface of the bath level in the direction of the thermal imaging camera. By means of the thermal imaging camera, also called a thermographic camera, infrared radiation can be received. By means of the thermal imaging camera, the invisible to the human eye heat radiation of the arranged on the surface of the bath level casting powder can be made visible. As a result, temperature distributions can be detected and displayed over the entire surface of the casting powder arranged on the bath surface. The thermal imaging camera is arranged at a certain distance from the casting powder to be measured, wherein the heat radiation emitted by the casting powder is directed via a deflection device in the direction of the thermal imaging camera. As a result, the thermal imaging camera can be arranged as protected as possible against the influence of the direct and total heat radiation of the continuous casting mold and the melt bath contained therein.

Die Umlenkvorrichtung weist dabei bevorzugt ein Reflexionssystem auf. Durch das Vorsehen eines Reflexionssystems als Umlenkvorrichtung kann eine besonders einfach aufgebaute und kostengünstige Umlenkvorrichtung vorgesehen werden. Das Reflexionssystem kann dabei beispielsweise aus ein oder mehreren Spiegeln ausgebildet sein, welche die Wärmestrahlung von dem Gießpulver auf der Badspiegeloberfläche empfangen und die derart ausgerichtet sind, dass sie die empfangene Wärmestrahlung in Richtung der Wärmebildkamera reflektieren. Zur Erzielung einer hohen Effizienz weist das Reflexionssystem vorzugsweise einen Reflexionsgrad von ca. 100% auf.The deflection device preferably has a reflection system. By providing a reflection system as a deflection device, a particularly simple and cost-effective deflection device can be provided. The reflection system can, for example, one or more mirrors be formed, which receive the heat radiation from the casting powder on the Badspiegeloberfläche and which are aligned so that they reflect the received heat radiation in the direction of the thermal imager. To achieve high efficiency, the reflection system preferably has a reflectance of about 100%.

Die Umlenkvorrichtung ist bevorzugt an einer der Gießpulveraufgabeeinrichtung gegenüberliegenden Seite eines In die Stranggießkokille eingeführten Tauchrohres oder auf der gleichen Seite wie die Gießpulveraufgabeeinrichtung angeordnet. Ist die Umlenkvorrichtung an der der Gießpulveraufgabeeinrichtung gegenüberliegenden Seite des in die Stranggießkokille eingeführten Tauchrohres angeordnet, ist es möglich, die Beeinflussung der Umlenkvorrichtung bei einer Zugabe bzw. Aufgabe von Gleßpulver über die Gleßpulveraufgabeeinrichtung in die Stranggießkokille möglichst gering halten zu können.The deflecting device is preferably arranged on a side of the immersion tube inserted into the continuous casting mold or on the same side as the cast powder feeding device, opposite to the casting powder dispensing device. If the deflecting device is arranged on the side of the immersion tube inserted into the continuous casting mold, it is possible to minimize the influence on the deflecting device when adding or dispensing molding powder via the granulating powder feeding device into the continuous casting mold.

Weiter ist es bevorzugt vorgesehen, dass die Umlenkvorrichtung eine erste Umlenkungseinhelt und eine zweite Umlenkungseinheit aufweist, wobei die erste Umlenkungseinheit und die zweite Umlenkungseinheit jeweils an sich gegenüberliegenden Seiten eines in die Stranggießkokille eingeführten Tauchrohres angeordnet sind. Dadurch ist es möglich, die Temperatur des Gießpulvers auf der Bandoberfläche zumindest an zwei Punkten, sowohl links als auch rechts von dem Tauchrohr, beobachten und messen zu können, wodurch die Genauigkeit des Messung der Temperatur des Gießpulvers über die gesamte Fläche entlang der Badoberfläche wesentlich erhöht werden kann. Dadurch kann eine besonders sichere und exakte Bestimmung des Zustandes des Gießpulvers auf der Badoberfläche ermittelt werden.Further, it is preferably provided that the deflection device comprises a first deflection and a second deflection unit, wherein the first deflection unit and the second deflection unit are respectively arranged on opposite sides of an inserted into the continuous casting mold immersion tube. This makes it possible to observe and measure the temperature of the casting powder on the belt surface at least at two points, both left and right of the dip tube, thereby substantially increasing the accuracy of measuring the temperature of the casting powder over the entire surface along the bath surface can be. As a result, a particularly reliable and exact determination of the state of the casting powder on the bath surface can be determined.

Auch ist es ferner vorzugsweise vorgesehen, dass die Umlenkvorrichtung Lichtwellenleiter aufweist. Durch die Verwendung von Lichtwellenleiter ist eine besonders hohe Übertragungsrate an Infrarotstrahlung hin zu der Wärmebildkamera möglich, wobei Verluste bei der Übertragung der von dem Gießpulver auf der Badsplegeloberfläche ausgesendeten Wärmestrahlung zu der Wärmebildkamera weitgehend verhindert werden können.It is also preferably provided that the deflection device has optical waveguides. Due to the use of optical fibers is a particularly high transmission rate of infrared radiation towards the thermal imaging camera possible, wherein losses in the transmission of the emitted from the casting powder on the Badsplegeloberfläche heat radiation to the thermal imaging camera can be largely prevented.

Zur Abschirmung der optischen Bildauswertungseinheit gegenüber der Umgebung ist die Umlenkvorrichtung vorzugsweise in einem Gehäuse angeordnet, wobei das Gehäuse eine Luftzuführung aufweist. Durch die Luftzuführung kann eine kontinuierliche Luftströmung innerhalb des Gehäuses sichergestellt werden. Über die Luftzuführung kann Luft in Richtung der Umlenkvorrichtung geleitet werden, wobei die Umlenkvorrichtung durch die in dem Gehäuse zirkulierende Luft gekühlt werden kann. Dadurch kann die Lebensdauer der Umlenkvorrichtung und damit der optischen Bildauswertungseinheit erhöht werden.For shielding the optical image evaluation unit from the environment, the deflection device is preferably arranged in a housing, wherein the housing has an air supply. Through the air supply, a continuous flow of air can be ensured within the housing. Air can be directed in the direction of the deflection device via the air feed, wherein the deflection device can be cooled by the air circulating in the housing. As a result, the life of the deflection device and thus of the optical image evaluation unit can be increased.

Weiter ist es bevorzugt vorgesehen, dass die zweite Messeinrichtung eine Staubschutzeinrichtung aufweist. Bei der Zugabe von Gießpulver in die Stranggießkokille kommt es üblicherweise zu einer starken Staubentwicklung. Mittels der Staubschutzeinrichtung kann verhindert werden, dass in die zweite Messeinrichtung der Staub eindringen kann, was zu einer Verschmutzung der in der Messeinrichtung vorgesehenen Bauteile, wie der Wärmebildkamera und der Umlenkvorrichtung, führen würde, wodurch die Messergebnisse verfälscht werden könnten.Furthermore, it is preferably provided that the second measuring device has a dust protection device. The addition of casting powder into the continuous casting mold usually results in a strong formation of dust. By means of the dust protection device, it is possible to prevent the dust from penetrating into the second measuring device, which would lead to contamination of the components provided in the measuring device, such as the thermal imaging camera and the deflection device, as a result of which the measurement results could be falsified.

Die Staubschutzeinrichtung kann vorzugsweise eine oder mehrere Luftsperrdüsen aufweisen. Über die Luftsperrdüsen kann Druckluft vorzugsweise quer zu der Richtung, in welche der Staub des zugeführten Gießpulver aufsteigt, geblasen werden. Dadurch kann verhindert werden, dass der Staub In das Gehäuse der zweiten Messeinrichtung eindringen kann. Um den Druckluftverbrauch zu reduzieren, kann es derart vorgesehen sein, dass nur während der Gießpulverzugabe in die Stranggießkokille ein erhöhter Luftstrom in Form von Druckluft über die Luftsperrdüsen ausgeblasen wird.The dust protection device may preferably have one or more air-blocking nozzles. Preferably, compressed air can be blown across the air-blocking nozzles transversely to the direction in which the dust of the supplied casting powder rises. This can prevent that the dust can penetrate into the housing of the second measuring device. In order to reduce the compressed air consumption, it may be provided in such a way that only during the addition of the casting powder into the continuous casting mold an increased air flow in the form of compressed air is blown out via the air blocking nozzles.

Weiter ist es bevorzugt vorgesehen, dass die Staubschutzeinrichtung eine verschließbare Öffnung an dem Gehäuse der zweiten Messeinrichtung aufweist. Die Umlenkvorrichtung ist dabei vorzugsweise im Bereich der verschließbaren Öffnung vorgesehen, wobei während der Messung der Temperatur des Gießpulvers auf der Badspiegeloberfläche, wenn keine Gießpulverzugabe erfolgt, die Öffnung geöffnet ist, damit die Wärmestrahlung von der Umlenkvorrichtung aufgenommen und weitergeleitet werden kann. Kurz vor dem Beginn der Gleßpulverzugabe kann die Öffnung beispielsweise mit einer Klappe verschlossen werden, so dass während der Gießpulverzugabe das Gehäuse verschlossen ist und kein Staub In das Gehäuse eindringen kann. Sobald die Gießpulverzugabe beendet ist, kann die Öffnung wieder geöffnet werden, damit die Messung fortgeführt werden kann.Furthermore, it is preferably provided that the dust protection device has a closable opening on the housing of the second measuring device. The deflection device is preferably provided in the region of the closable opening, wherein during the measurement of the temperature of the casting powder on the Badspiegeloberfläche when no Gießpulverzugabe takes place, the opening is open, so that the heat radiation can be absorbed by the deflection and forwarded. Shortly before the start of the addition of powdered powder, the opening can be closed, for example, with a flap, so that the housing is closed during the addition of the powder and no dust can penetrate into the housing. As soon as the addition of the casting powder has been completed, the opening can be opened again so that the measurement can be continued.

Die Erfindung betrifft ferner ein Verfahren zur Steuerung einer Gießpulveraufgabe an einer Stranggießanlage, bei welchem mittels einer ersten Messeinrichtung die Höhe eines Badspiegels In einer Stranggießkokille bestimmt sowie ein entsprechendes erstes Signal erzeugt wird und bei welchem mittels einer zweiten Messeinrichtung die Temperatur des auf der Oberfläche des Badspiegels in der Stranggießkokille angeordneten Gießpulvers bestimmt sowie ein entsprechendes zweites Signal erzeugt wird, wobei das erste Signal der ersten Messeinrichtung und das zweite Signal der zweiten Messeinrichtung an eine Rechnereinheit gesendet und von der Rechnereinheit bezüglich der Höhe des Badspiegels und bezüglich der Temperatur des Gießpulvers auf der Oberfläche des Badspiegels derart ausgewertet und an eine Gießpulveraufgabeeinrichtung weitergegeben wird, dass eine Gießpulveraufgabe nur erfolgt, wenn sich die Badspiegelhöhe zwischen einer maximal zulässigen und einer minimal zulässigen Badspiegelhöhe befindet, und dass bei einer zu hohen Temperatur des Gießpulvers auf der Oberfläche des Badspiegels die Fördermenge der Gleßpulveraufgabeeinrichtung erhöht und bei einer zu niedrigen Temperatur des Gießpulvers auf der Oberfläche des Badspiegels die Fördermenge der Gießpulveraufgabeeinrichtung reduziert wird.The invention further relates to a method for controlling a Gießpulveraufgabe at a continuous casting, wherein by means of a first measuring device determines the height of a bath mirror In a continuous casting mold and a corresponding first signal is generated and in which by means of a second measuring device, the temperature of the on the surface of the bath mirror in the continuous casting mold arranged casting powder and a corresponding second signal is generated, wherein the first signal of the first measuring device and the second signal of the second measuring device sent to a computer unit and the computer unit with respect to the height of the bath level and with respect to the temperature of the casting powder on the surface the bath level is evaluated and passed to a Gießpulveraufgabeeinrichtung that a Gießpulveraufgabe only takes place when the Badspiegelhöhe between a maximum allowable and a minimum allowable Ba dspiegelhöhe is located, and that increases too high a temperature of the casting powder on the surface of the bath level, the delivery rate of the Gleßpulveraufgabeeinrichtung and at too low a temperature of the casting powder on the surface of the bath level, the delivery rate of Gießpulveraufgabeeinrichtung is reduced.

Bezüglich der Vorteile des Verfahrens wird auf die zu der Anordnung genannten Vorteile verwiesen.With regard to the advantages of the method, reference is made to the advantages mentioned in relation to the arrangement.

Nachfolgend wird die Erfindung unter Bezugnahme auf die anliegenden Zeichnungen anhand bevorzugter Ausführungsformen näher erläutert.The invention will be explained in more detail with reference to the accompanying drawings with reference to preferred embodiments.

Es zeigen:

Fig. 1a
eine schematische Darstellung einer erfindungsgemäßen Anordnung zur Steuerung einer Gießpulveraufgabe einer Stranggießanlage gemäß einer ersten Ausführungsform;
Fig. 1b
eine schematische Darstellung der erfindungsgemäßen Anordnung zur Steuerung einer Gießpulveraufgabe einer Stranggießanlage gemäß einer zweiten Ausführungsform;
Flg. 2
eine schematische Draufsicht auf eine erfindungsgemäße zweite Messeinrichtung der erfindungsgemäßen Anordnung zur Steuerung einer Gießpulveraufgabe einer Stranggießanlage;
Fig. 3
ein Blockdiagramm einer Regelung des Zeitintervalls der Gießpulveraufgabe der Gießpulveraufgabeeinrichtung; und
Fig. 4
ein Blockdiagramm einer Regelung der Menge der Gießpulveraufgabe der Gießpulveraufgabeeinrichtung.
Show it:
Fig. 1a
a schematic representation of an inventive arrangement for controlling a Gießpulveraufgabe a continuous casting according to a first embodiment;
Fig. 1b
a schematic representation of the arrangement according to the invention for controlling a Gießpulveraufgabe a continuous casting plant according to a second embodiment;
Flg. 2
a schematic plan view of a second measuring device according to the invention of the inventive arrangement for controlling a Gießpulveraufgabe a continuous casting;
Fig. 3
a block diagram of a control of the time interval of Gießpulveraufgabe the Gießpulveraufgabeeinrichtung; and
Fig. 4
a block diagram of a control of the amount of Gießpulveraufgabe the Gießpulveraufgabeeinrichtung.

Fig. 1 a und Fig. 1b zeigen schematisch zwei verschiedene Ausführungsformen einer erfindungsgemäßen Anordnung zur Steuerung einer Gießpulveraufgabe 10 einer Stranggießanlage mit einer ersten Messeinrichtung, hier nicht dargestellt, zur Bestimmung der Höhe eines Badspiegels 12 in einer Stranggießkokille 14 und einer zweiten Messeinrichtung 16 zur Bestimmung der Temperatur des Gießpulvers 18 auf der Oberfläche des Badspiegels 12 in der Stranggießkokille 14. Mittels der über die erste Messeinrichtung und die zweite Messeinrichtung 16 gemessenen Daten wird eine Gleßpulveraufgabeeinrichtung 28 gezielt gesteuert und hinsichtlich der damit bewirkten Gießpulveraufgabe bzw. Gießpulverzugabe 10 auf die Oberfläche des Badspiegels 12 des Schmelzbades 22 angesteuert. Fig. 1 a and Fig. 1b schematically show two different embodiments of an inventive arrangement for controlling a Gießpulveraufgabe 10 a continuous casting with a first measuring device, not shown here, for Determining the height of a bath level 12 in a continuous casting mold 14 and a second measuring device 16 for determining the temperature of the casting powder 18 on the surface of the bath level 12 in the continuous casting mold 14. By means of the data measured via the first measuring device and the second measuring device 16, a Gleßpulveraufgabeeinrichtung 28th selectively controlled and controlled with respect to the casting powder application or casting powder addition 10 caused thereby on the surface of the bath mirror 12 of the molten bath 22.

Die erste Messeinrichtung zur Bestimmung der Höhe des Badspiegels 12 ist vorzugsweise innerhalb der Stranggießkokille 14 angeordnet, wobei die erste Messeinrichtung beispielsweise in Form einer Berthold-Messeinrichtung ausgebildet ist.The first measuring device for determining the height of the bath mirror 12 is preferably arranged within the continuous casting mold 14, wherein the first measuring device is designed, for example, in the form of a Berthold measuring device.

Die zweite Messeinrichtung 16 ist in Form einer optischen Bildauswertungseinheit ausgebildet, welche eine Wärmebildkamera 24 und eine Umlenkvorrichtung 26 in Form eines aus einem Spiegelsystem gebildeten Reflexionssystems umfasst. Mittels der Umlenkvorrichtung 26 kann die von dem auf der Oberfläche des Badspiegels 12 angeordneten Gießpulver 18 ausgesendete Wärmestrahlung an die Wärmebildkamera 24 weitergeleitet werden, wobei die Wärmebildkamera 24 die Wärmestrahlung für das menschliche Auge sichtbar macht, indem Temperaturvertellungen über die gesamte Fläche des auf der Badoberfläche 12 angeordneten Gießpulver 18 erfasst und dargestellt werden können.The second measuring device 16 is embodied in the form of an optical image evaluation unit, which comprises a thermal imaging camera 24 and a deflection device 26 in the form of a reflection system formed by a mirror system. By means of the deflecting device 26, the heat radiation emitted by the casting powder 18 arranged on the surface of the bath mirror 12 can be forwarded to the thermal imaging camera 24, the thermal imaging camera 24 making the thermal radiation visible to the human eye by applying temperature profiles over the entire surface of the bath surface 12 arranged casting powder 18 can be detected and displayed.

Die Umlenkvorrichtung 26 kann, wie in Fig. 1a erkennbar ist, in einem Bereich oberhalb der Stranggießkokille 14 angeordnet sein, welche von dem Bereich, wo die Gießpulveraufgabe 10 erfolgt am weitesten entfernt ist, so dass die Umlenkvorrichtung 26 von der Gießpulveraufgabeeinrichtung 28 aus gesehen hinter einem in die Stranggießkokille 14 eingeführten Tauchrohr 20 angeordnet ist. Demzufolge ist die Umlenkvorrichtung 26 vorzugsweise an einer der Gleßpulveraufgabeeinrichtung 28 gegenüberliegenden Seite der Stranggleßkokille 14 angeordnet. Je nach Einbauverhältnissen kann es aber auch sinnvoll sein, wie in Fig. 1b gezeigt, die Umlenkvorrichtung 26 vor dem Tauchrohr 20, auf der gleichen Seite wie die Gießpulveraufgabeeinrichtung 28 vorgesehen ist, anzuordnen. Die Umlenkvorrichtung 26 ist dabei oberhalb der Gießpulveraufgabeeinrichtung 28 vorgesehen.The deflection device 26 can, as in Fig. 1a can be seen, be arranged in an area above the continuous casting mold 14, which is the furthest away from the area where the Gießpulveraufgabe 10 is carried out so that the deflection device 26 seen from the Gießpulveraufgabeeinrichtung 28 from behind an inserted into the continuous casting mold 14 dip tube 20 , Accordingly, the deflection device 26 is preferably arranged on one of the Gleßpulveraufgabeeinrichtung 28 opposite side of the strand casting mold 14. Depending on the installation conditions, it may also be useful, as in Fig. 1b shown, the deflecting device 26 is provided in front of the dip tube 20, on the same side as the Gießpulveraufgabeeinrichtung 28 is provided. The deflection device 26 is provided above the Gießpulveraufgabeeinrichtung 28.

Die Umlenkvorrichtung 26 ist in einem Gehäuse 30 angeordnet, welches unmittelbar an die Wärmebildkamera 24 angrenzt. Das Gehäuse 30 weist eine Luftzuführung 32 auf, über welche Luft in das Gehäuse 30 eingelassen werden kann, so dass in dem Gehäuse 30 eine Luftzirkulation gegeben ist, welche eine Kühlung der Umlenkvorrichtung 26 bewirken kann.The deflection device 26 is arranged in a housing 30 which directly adjoins the thermal imaging camera 24. The housing 30 has an air feed 32, via which air can be introduced into the housing 30, so that an air circulation is provided in the housing 30, which can bring about cooling of the deflection device 26.

Um die Wärmebildkamera 24 und die Umlenkvorrichtung 26 vor dem Eindringen von Staub, insbesondere bei der Zugabe von Gießpulver 18 in die Stranggießkokille 14, zu schützen, weist die zweite Messeinrichtung 16 eine hier nicht gezeigte Staubschutzeinrichtung auf, welche beispielsweise als ein oder mehrere Luftsperrdüsen oder eine an dem Gehäuse 30 vorgesehene verschließbare Öffnung ausgebildet sein kann.In order to protect the thermal imaging camera 24 and the deflecting device 26 against the ingress of dust, in particular when adding casting powder 18 into the continuous casting mold 14, the second measuring device 16 has a dust protection device, not shown here, which can be used, for example, as one or more air-blocking nozzles or a can be formed on the housing 30 provided closable opening.

Die Befestigung der zweiten Messeinrichtung 16 oberhalb der Stranggießkokille 14 erfolgt über eine Halterung 34.The attachment of the second measuring device 16 above the continuous casting mold 14 via a holder 34th

Zur Steuerung der Gießpulveraufgabe 10 wird von der ersten Messeinrichtung ein erstes, die Höhe des Badspiegels 12 angebendes Signal erzeugt und an eine Rechnereinheit 36 gesendet. Von der zweiten Messeinrichtung 12 wird ein zweites, die Temperatur des Gießpulvers 18 auf der Oberfläche des Badspiegels 12 angebendes Signal erzeugt und ebenfalls an die Rechnereinheit 36 gesendet. Die Rechnereinheit 36 wertet das erste Signal und das zweite Signal aus und generiert aus diesen beiden Signalen eine Information oder mehrere Informationen über die erforderliche Fördermenge des über die Gießpulveraufgabeeinrichtung 28 in die Stranggießkokille 14 aufzugebenden Gießpulvers 18 und die Position, an welcher die Gießpulveraufgabe 10 auf die Oberfläche des Badspiegels 12 erfolgen soll, welche an die Gießpulveraufgabeeinrichtung 28 weitergegeben wird/werden. Wird ermittelt, dass die Temperatur des Gießpulvers 18 auf der Oberfläche des Badspiegels 12 zu hoch ist, beispielsweise wenn das Gießpulver 18 auf der Badoberfläche 12 geschmolzen ist, erfolgt ein Signal "zu heiß", woraufhin die Fördermenge der Gießpulveraufgabeeinrichtung 28 erhöht wird. Werden zu niedrige Temperaturen gemessen, beispielsweise wenn das Gießpulver 18 auf der Oberfläche des Badspiegels 12 zu dick ist, erfolgt ein Signal "zu kalt", woraufhin die Fördermenge der Gleßpulveraufgabeeinrichtung 28 reduziert wird. In der Rechnereinheit 36 werden die zeitliche Gießpulveraufgabe und die Gießpulvermenge entsprechend der verwendeten Stahlsorte und der Gießgeschwindigkeit optimiert und gespeichert. Wird der Stahl zu einem späteren Zeitpunkt wieder gegossen, so kann die Gießpulveraufgabeeinrichtung 28 mit den optimierten Werten starten, wodurch der gesamte Steuerungsprozess der Gießpulveraufgabe 10 weiter optimiert werden kann. Die Gießpulveraufgabe 10 erfolgt dabei vorzugsweise in periodischen Abständen, wobei sie Jedoch entsprechend der durch die Rechnereinheit 36 ermittelten Werte anpassbar bzw. entsprechend gesteuert werden kann. Dadurch, dass bei der erfindungsgemäßen Anordnung die gemessenen Daten bezüglich der Höhe des Badspiegels 12 und bezüglich der Temperatur des Gießpulvers 18 auf der Oberfläche des Badspiegels 12 von der Rechnereinheit 36 in Beziehung zueinander gesetzt werden und aus diesen beiden Daten Anweisungen an die Gießpulveraufgabeelnrichtung 28 generiert werden, kann die Steuerung der Gießpulveraufgabe 10 gegenüber bisher bekannten Steuerungen wesentlich optimiert werden.To control the casting powder task 10, a first signal indicating the height of the bath level 12 is generated by the first measuring device and sent to a computer unit 36. From the second measuring device 12, a second, the temperature of the casting powder 18 on the surface of the bath mirror 12 indicative signal is generated and also sent to the computer unit 36. The computer unit 36 evaluates the first signal and the second signal and generates from these two signals information or more information about the required delivery rate of about the Gießpulveraufgabeeinrichtung 28 in the continuous casting mold 14 abandoned casting powder 18 and the position at which the Gießpulveraufgabe 10 on the Surface of the bath mirror 12 done which is passed on to the Gießpulveraufgabeeinrichtung 28 / will be. If it is determined that the temperature of the casting powder 18 on the surface of the bath mirror 12 is too high, for example, when the casting powder 18 has melted on the bath surface 12, a signal "too hot" occurs, whereupon the delivery rate of the casting powder dispenser 28 is increased. If too low temperatures are measured, for example if the casting powder 18 on the surface of the bath level 12 is too thick, a signal "too cold" occurs, whereupon the delivery rate of the Gleßpulveraufgabeeinrichtung 28 is reduced. In the computer unit 36, the temporal Gießpulveraufgabe and the Gießpulvermenge be optimized and stored according to the steel grade and the casting speed used. If the steel is poured again at a later time, the casting powder dispensing device 28 can start with the optimized values, whereby the entire control process of the casting powder task 10 can be further optimized. The casting powder task 10 is preferably carried out at periodic intervals, although it can be adapted or appropriately controlled in accordance with the values determined by the computer unit 36. Characterized in that in the inventive arrangement, the measured data with respect to the height of the bath mirror 12 and with respect to the temperature of the casting powder 18 on the surface of the bath mirror 12 are set by the computer unit 36 in relation to each other and instructions to the Gießpulveraufgabeelnrichtung 28 are generated from these two data , the control of Gießpulveraufgabe 10 can be significantly optimized over previously known controls.

Fig. 2 zeigt eine Draufsicht auf die erfindungsgemäße zweite Messeinrichtung 16 mit der Wärmebildkamera 24 und der in dem Gehäuse 30 angeordneten Umlenkvorrichtung 26, wobei hierbei erkennbar ist, dass die Umlenkvorrichtung 26 eine erste Umlenkeinheit 38 und eine zweite Umlenkeinheit 40 aufweist, wobei die erste Umlenkeinheit 38 und die zweite Umlenkeinheit 40 jeweils an sich gegenüberliegenden Seiten des in die Stranggießkokille 14 eingeführten Tauchrohres 20 angeordnet sind. Die Umlenkeinheiten 38, 40 der Umlenkvorrichtung 26 können dabei hinter dem Tauchrohr 20, wie In Fig. 1a gezeigt, oder vor dem Tauchrohr 20, wie in Fig. 1b gezeigt, angeordnet sein. Fig. 2 shows a plan view of the second measuring device 16 according to the invention with the thermal imaging camera 24 and arranged in the housing 30 deflecting device 26, wherein it can be seen that the deflection device 26 has a first deflecting unit 38 and a second deflecting unit 40, wherein the first deflecting unit 38 and the second deflecting unit 40 are respectively arranged on opposite sides of the inserted into the continuous casting mold 14 dip tube 20 are. The deflection units 38, 40 of the deflection device 26 can be behind the dip tube 20, as in Fig. 1a shown, or in front of the dip tube 20, as in Fig. 1b shown to be arranged.

Fig. 3 und Fig. 4 zeigen zwei mögliche Varianten einer Steuerung der Gießpulveraufgabe 10 der Gleßpulveraufgabeeinrichtung 28 mittels jeweils eines Ablaufschemas in Form eines Blockdiagrammes. Die Steuerung der Gießpulveraufgabe 10 kann durch Variation des Zeitintervalls ΔZ zwischen den Ausgabezyklen bei konstanter Gießpulvermenge m erfolgen, wie in Fig. 3 schematisch dargestellt, oder durch Variation der Menge m des aufgegebenen Gießpulvers bei konstanten Aufgabezyklen, wie In Fig. 4 schematisch dargestellt. Fig. 3 and Fig. 4 show two possible variants of a control of Gießpulveraufgabe 10 of the Gleßpulveraufgabeeinrichtung 28 by means of a respective flowchart in the form of a block diagram. The control of the Gießpulveraufgabe 10 can be done by varying the time interval .DELTA.Z between the output cycles at a constant casting powder amount m, as in Fig. 3 shown schematically, or by varying the amount m of the discontinued casting powder at constant duty cycles, such as In Fig. 4 shown schematically.

Die Gießpulveraufgabe 10 erfolgt vorzugsweise nur, wenn sich die Höhe H des Badspiegels zwischen den Positionen der maximal zulässigen Badspiegelhöhe Hmax und der minimal zulässigen Badspiegelhöhe Hmin befindet.The casting powder task 10 preferably takes place only when the height H of the bath level is between the positions of the maximum permissible bath level height H max and the minimum permissible level of the bath level H min .

Ist dies gegeben, wird, wie In Fig. 3 gezeigt, in einem nächsten Schritt die Temperatur T des Badspiegels bestimmt.If this is given, as in Fig. 3 shown in a next step, the temperature T of the bath level determined.

Ist diese Temperatur T des Badspiegels größer als die maximal zulässige Temperatur Tmax des Badspiegels, erfolgt ein Signal, dass eine Gießpulveraufgabe erfolgen soll, wobei das Zeitinterintervall ΔZ für die periodische Gießpulveraufgabe durch eine Änderung ΔΔZ des Zeitintervalls ΔZ verringert wird. Sobald das Zeitintervall ΔZ zu klein ist, d. h. kleiner als das minimal zulässige Zeitintervall ΔZmin ist, erfolgt eine Meldung.If this temperature T of the bath level is greater than the maximum permissible temperature T max of the bath level, a signal is given that a casting powder application is to take place, wherein the time interval ΔZ for the periodic casting powder application is reduced by a change ΔΔZ of the time interval ΔZ. As soon as the time interval ΔZ is too small, ie smaller than the minimum permissible time interval ΔZ min , a message is issued.

Anschließend wird wiederum eine Bestimmung der Temperatur T des Badspiegels durchgeführt.Subsequently, a determination of the temperature T of the bath level is again carried out.

Ist die Temperatur T des Badspiegels kleiner als die minimal zulässige Temperatur Tmin des Badspiegels, erfolgt eine Erhöhung des Zeitintervalls ΔZ für die periodische Gießpulveraufgabe um ΔΔZ. Übersteigt das Zeitintervall ΔZ das maximal zulässige Zeitintervall ΔZmax erfolgt wiederum eine Meldung.If the temperature T of the bath is less than the minimum allowable temperature Tmin of the bath level, there is an increase of the time interval for periodic .DELTA.Z casting powder to ΔΔZ. If the time interval ΔZ exceeds the maximum permissible time interval ΔZ max , again a message occurs.

Anschließend erfolgt eine Überprüfung, ob das Zeitintervall ΔZ größer oder gleich der Zeit Z minus der alten Zelt Zalt ist. Falls ja, erfolgt wieder eine Gießpulveraufgabe, falls nein, wird wieder zunächst die Höhe des Badspiegels H geprüft.Subsequently, a check is made as to whether the time interval ΔZ is greater than or equal to the time Z minus the old tent Z alt . If so, again is a casting powder task, if no, again the height of the bath level H is checked first.

Bei der Regelung der Gießpulvermenge, wie in Fig. 4 gezeigt, wird ebenfalls zunächst die Höhe H des Badspiegels bestimmt. Liegt die Höhe H des Badspiegels zwischen der maximal zulässigen Badspiegelhöhe Hmax und der minimal zulässigen Badspiegelhöhe Hmin, wird In einem nächsten Schritt die Temperatur T des Badspiegels bestimmt. Ist diese Temperatur T des Badspiegels größer als die maximal zulässige Temperatur Tmax des Badspiegels, erfolgt ein Signal, dass eine Gießpulveraufgabe erfolgen soll, wobei die Gießpulvermenge m durch eine Änderung Δm der Gießpulvermenge m erhöht wird. Sobald die Gießpulvermenge m größer ist als die maximal zulässige Gießpulvermenge m_max erfolgt eine Meldung.When controlling the amount of casting powder, as in Fig. 4 shown, the height H of the bath level is also first determined. If the height H of the bath level lies between the maximum permissible bath level height H max and the minimum permissible bath level height H min , the temperature T of the bath level is determined in a next step. If this temperature T of the bath level is greater than the maximum permissible temperature T max of the bath level, a signal is given that a casting powder application is to take place, the amount of casting powder m being increased by a change Δm of the amount of casting powder m. As soon as the casting powder quantity m is greater than the maximum admissible amount of powdered powder m_max, a message is issued.

Anschließend erfolgt wiederum eine Bestimmung der Temperatur T des Badspiegels.Subsequently, in turn, a determination of the temperature T of the bath level.

Ist die Temperatur T des Badspiegels kleiner als die minimal zulässige Temperatur Tmin des Badspiegels, erfolgt eine Verringerung der Gießpulvermenge m. Unterschreitet die Gießpulvermenge die minimal zulässige Gießpulvermenge m_min erfolgt wiederum eine Meldung.If the temperature T of the bath level is smaller than the minimum permissible temperature T min of the bath level, the amount of casting powder m is reduced. If the amount of casting powder falls below the minimum permissible quantity of casting powder m_min, a message is again issued.

Anschließend erfolgt eine Überprüfung, ob das Zeitintervall ΔZ größer oder gleich der Zeit Z minus der alten Zeit Zan ist. Falls ja, erfolgt wieder eine Gießpulveraufgabe, falls nein, wird wieder zunächst die Höhe des Badspiegels H geprüft.Subsequently, a check is made as to whether the time interval ΔZ is greater than or equal to the time Z minus the old time Z on . If so, again is a casting powder task, if no, again the height of the bath level H is checked first.

Claims (10)

  1. Arrangement for controlling the casting powder feed (10) of a continuous casting plant, comprising a first measuring device, a second measuring device (14), a computer unit (36) and a casting powder feed device (28),
    wherein the first measuring device measures the bath level height (12) in the continuous casting mould (14) and generates a first signal, which indicates the height of the bath level (12) in the continuous casting mould (14), and sends it to a computer unit (36),
    wherein the second measuring device (16) measures the temperature of the casting powder (18) on the surface of the bath level (12) and generates a second signal, which indicates the temperature of the casting powder (18) on the surface of the bath level (12) in the continuous casting mould (14), and sends it to the computer unit (36) and
    wherein the computer unit (36) evaluates the first signal of the first measuring device and the second signal of the second measuring device (16) and controls a casting powder feed device (28),
    characterised in that
    the computer unit (36) so evaluates the signals with respect to the height of the bath level (12) and with respect to the temperature of the casting powder (18) on the surface of the bath level (12) and passes them on to the casting powder feed device (28) that a feed of casting powder takes place only if the bath level height is between a maximum permissible and a minimum permissible bath level height and that in the case of a too-high temperature of the casting powder (18) on the surface of the bath level (12) the conveyed quantity of the casting powder feed device (28) is increased and in the case of a too-low temperature of the casting powder (18) on the surface of the bath level (12) the conveyed quantity of the casting powder feed device (28) is reduced.
  2. Arrangement according to claim 1, characterised in that the second measuring device (18) is constructed in the form of an optical image evaluating unit which comprises a thermal imaging camera (24) and a deflecting device (26) in the form of a reflection system formed by a mirror system, wherein the deflecting device (26) deflects the heat radiation, which is emitted by the casting powder (18) arranged on the surface of the bath level (12), in the direction of the thermal imaging camera (24).
  3. Arrangement according to claim 1 or 2, characterised in that the deflecting device (26) is arranged at a side, which is opposite the casting powder feed device (28), of an immersion pipe (20) introduced into the continuous casting mould (14) or on the same side as the casting powder feed device (28).
  4. Arrangement according to any one of the preceding claims, characterised in that the deflecting device (26) comprises a first deflecting unit (38) and a second deflecting unit (40), wherein the first deflecting unit (38) and the second deflecting unit (40) are respectively arranged at mutually opposite sides of the immersion pipe (20) introduced into the continuous casting mould (14).
  5. Arrangement according to any one of the preceding claims, characterised in that the deflecting device (26) comprises optical waveguides.
  6. Arrangement according to any one of the preceding claims, characterised in that the deflecting device (26) is arranged in a housing (30), wherein the housing (30) comprises air supply means (32).
  7. Arrangement according to any one of the preceding claims, characterised in that the second measuring device (16) comprises a dust protection device.
  8. Arrangement according to claim 7, characterised in that the dust protection device comprises one or more air-lock nozzles.
  9. Arrangement according to claim 7 or 8, characterised in that the dust protection device has a closable opening at the housing (30) of the second measuring device (16).
  10. Method of controlling the casting powder feed of a continuous casting plant, in which the height of a bath level in a continuous casting mould is determined by means of a first measuring device and a corresponding first signal is generated and in which the temperature of the casting powder arranged on the surface of the bath level in the continuous casting mould is determined by means of a second measuring device and a corresponding second signal is generated, wherein the first signal of the first measuring device and the second signal of the second measuring device are sent to a computer unit and are so evaluated by the computer unit with respect to the height of the bath level and with respect to the temperature of the casting powder on the surface of the bath level and are passed on to a casting powder feed device that a feed of casting powder takes place only if the bath level height is between a maximum permissible and a minimum permissible bath level height and that in the case of a too-high temperature of the casting powder on the surface of the bath level the conveyed quantity of the casting powder feed device is increased and in the case of a too-low temperature of the casting powder on the surface of the bath level the conveyed quantity of the casting powder feed device is reduced.
EP11712212.7A 2010-04-21 2011-03-23 Arrangement and method for controlling a casting powder feed of a continuous casting plant Active EP2560774B1 (en)

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DE102010015670A DE102010015670A1 (en) 2010-04-21 2010-04-21 Arrangement and method for controlling a casting powder application of a continuous casting plant
PCT/EP2011/054409 WO2011131442A1 (en) 2010-04-21 2011-03-23 Arrangement and method for controlling a casting powder feed of a continuous casting plant

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IT202300012816A1 (en) * 2023-06-21 2024-12-21 Ergolines Lab S R L DETECTION METHOD AND VISION DEVICE AND POWDER SUPPLY SYSTEM FOR CASTING MACHINE
WO2024260575A1 (en) * 2023-06-21 2024-12-26 Ergolines Lab S.R.L. Detection method and vision device and powder supply system for casting machine

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CN109894588B (en) * 2019-04-18 2021-06-22 洛阳市科丰冶金新材料（集团）有限公司 Special all-endless high-efficiency continuous casting protective slag for ESP (electronic stability program) low-carbon steel and preparation method thereof
CN110605363A (en) * 2019-10-31 2019-12-24 王禹博 Automatic slag adding machine for crystallizer
CN115406259B (en) * 2022-07-12 2025-09-05 河南佰利联新材料有限公司 A feeding method for controlling the bottom temperature of a titanium slag furnace
CN119772124B (en) * 2025-03-11 2025-05-27 铜陵兢强电子科技股份有限公司 Aluminum rod continuous casting and rolling refining process and device

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IT202300012816A1 (en) * 2023-06-21 2024-12-21 Ergolines Lab S R L DETECTION METHOD AND VISION DEVICE AND POWDER SUPPLY SYSTEM FOR CASTING MACHINE
WO2024260575A1 (en) * 2023-06-21 2024-12-26 Ergolines Lab S.R.L. Detection method and vision device and powder supply system for casting machine

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