EP0238844B1 - Method for starting up a steel strip casting machine - Google Patents

Method for starting up a steel strip casting machine Download PDF

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Publication number
EP0238844B1
EP0238844B1 EP87102282A EP87102282A EP0238844B1 EP 0238844 B1 EP0238844 B1 EP 0238844B1 EP 87102282 A EP87102282 A EP 87102282A EP 87102282 A EP87102282 A EP 87102282A EP 0238844 B1 EP0238844 B1 EP 0238844B1
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EP
European Patent Office
Prior art keywords
casting
pouring
level
strip
chill mould
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Expired - Lifetime
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EP87102282A
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German (de)
French (fr)
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EP0238844A1 (en
Inventor
Günter Dr. Flemming
Hans Streubel
Manfred Kolakowski
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SMS Siemag AG
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SMS Schloemann Siemag AG
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Priority to IN98/MAS/87A priority Critical patent/IN169225B/en
Application filed by SMS Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Priority to AT87102282T priority patent/ATE51782T1/en
Publication of EP0238844A1 publication Critical patent/EP0238844A1/en
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Publication of EP0238844B1 publication Critical patent/EP0238844B1/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
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating 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
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/20—Controlling or regulating processes or operations for removing cast stock
    • B22D11/201—Controlling or regulating processes or operations for removing cast stock responsive to molten metal level or slag level
    • B22D11/202—Controlling or regulating processes or operations for removing cast stock responsive to molten metal level or slag level by measuring temperature
    • 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

Definitions

  • the invention relates to a method for casting on a steel strip casting installation with a mold with cooled narrow side walls and wide side walls, which has a pouring area which is widened upwards in the area of the wide side walls for receiving a pouring tube above a format-determining parallel section.
  • the object is achieved in that the period limited by the effectiveness of the pre-lubrication and reoxidation of the bath level not covered is better utilized.
  • the solution according to the invention is that the height of the casting level is tracked away, that the strand withdrawal between the entry of the casting level into the extended pouring area of the mold and covering of the pouring tube outlet openings is started and until the target level is reached to a minimum withdrawal speed v B m, at which the The bottom of the pouring sump remains below the format-determining parallel section.
  • the new process enables more precise control and automation of the casting process, which relieves the operating personnel, avoids operating errors and improves overall operational safety.
  • the method takes into account in particular the fact that a heterogeneous zone of crystal growth forms within the metal sump starting from the strand shell. Different growth of the crystals of opposing walls can lead to the formation of bridges in the pouring area, which oppose a reduction in the strip thickness and hinder the strip outfeed.
  • the strand withdrawal is started between 15 and 25 seconds after the start of pouring.
  • the minimum take-off speed is 1.1 m / min.
  • the respective height of the mold level is advantageously determined by measuring the temperature within the mold walls.
  • the height of the end of the casting sump is determined by continuous force measurement on the broad side surface of the strip immediately below the mold.
  • the height of the end of the casting sump can alternatively be determined by continuous ultrasound measurement in the strip thickness direction immediately below the mold.
  • the pouring tube can be brought into a lower pouring position for casting and can be raised to a normal operating position after covering the pouring tube outlet openings.
  • the mold is moved in an oscillating manner.
  • measurement data of the localization of the mold level and the bottom of the pouring sump are continuously fed to a process computer and, after comparison of the setpoint and actual value, the strip take-off speed v B and the corresponding casting speed v E are regulated.
  • the time of the powder application to the casting level can be determined by the process computer.
  • a steel strip caster for carrying out the method has several thermal sensors in the pouring area and in the parallel area of the broad side walls of the mold. To determine the end of the casting sump, the strand guide elements immediately downstream of the mold are provided with force sensors.
  • molten steel 1 flows from a casting tank 2 from a height-adjustable stopper 3 through a pouring pipe 4 into a mold 5, which is formed by two opposite broad side walls 6 and two narrow side walls 7. Broad side walls 6 and narrow side walls 7 are provided with cooling channels 8. An oscillation device for the mold is indicated by arrows 9.
  • the broad side walls 6 form, above a format-determining parallel section 10, a pouring region 11 which widens upwards to accommodate the pouring tube 4.
  • the molten steel 1 flowing into the mold 5 at the start of casting connects to a starting head 12 which is fastened to a starting strand 13.
  • the casting mold 14 which forms rises above the lateral outflow openings 15 of the yaw tube 4 and is then covered by casting powder for lubrication and to prevent oxidation.
  • Thermocouples 16 are provided in the broad side walls to determine the instantaneous height of the mold level 14.
  • the starting strand 13 is located in a strand guide consisting of rollers 17 and arranged downstream of the mold.
  • a driver 18 for conveying the starting strand 13 and then the cast steel strip is arranged.
  • a measuring device 19 for determining the force acting on the belt shell 22 from ferrostatic pressure is arranged directly below the mold 5. Force sensors 19 are used for this
  • thermocouples 16 and force sensors 19 are fed to a process computer 20 which, after comparison of the target value and actual value, determines the required strip take-off speed v B for the drivers 18 and the corresponding pouring speed v E for the actuator 21 of the stopper 3.
  • the liquid steel solidifies on the cooled Brietrichweiten 6 and narrow side walls 7 of the mold 5 to band shells 22, the thickness of which increases downwards.
  • the band shells 22 which form in the region of the enlarged pouring area 11 on the broad side walls 6 are brought closer to one another in the course of the lowering movement to the format-determining parallel section 10.
  • the mold walls 6, 7 are lubricated before the start of casting. Thereafter, the casting process shown in FIG. 3 in phases A, B, C, D - F and in FIG. 4 in diagrams for the casting speed VE and the strip removal speed v B is carried out synchronously.

Description

Die Erfindung betrifft ein Verfahren zum Angießen einer Stahlbandgießanlage mit einer Kokille mit gekühlten Schmalseitenwänden und Breitseitenwänden, die zur Aufnahme eines Gießrohres oberhalb eines formatbestimmenden Parallelabschnitts im Bereich der Breitseitenwände einen nach oben erweiterten Eingießbereich aufweist.The invention relates to a method for casting on a steel strip casting installation with a mold with cooled narrow side walls and wide side walls, which has a pouring area which is widened upwards in the area of the wide side walls for receiving a pouring tube above a format-determining parallel section.

Durch die DE-PS 887 990 ist es bekannt, beim Stranggießen von Brammen in einer Kokille mit erweitertem Eingießbe- reich, die Gießbedingungen so festzulegen, daß der flüssige Metallsumpf sich bis in den Parallelabschnitt erstreckt.From DE-PS 887 990 it is known, when continuously casting slabs in a mold with an extended pouring area, to determine the casting conditions so that the liquid metal sump extends into the parallel section.

Die Forderung, den flüssigen Metallsumpf ständig bis unterhalb des Eingießbereichs d.h. im formatbestimmenden unteren Bereich der Kokille zu halten ist beim Angießen der Stahlbandgießanlage besonders schwierig zu erfüllen, da einerseits die einströmende Schmelze an den kalten Kokillenwänden und an dem die Kokille verschließendem Anfahrkopf besonders schnell abkühlt andererseits bei zu hoher Austrittsgeschwindigkeit Metallschmelze zu oberen Bereichen der Kokillenwandungen hochspritzt und anbackt, wodurch die Strangschalenbildung behindert und Durchbrüche verursacht werden können. Eine zusätzliche Erschwernis besteht darin, daß das zum Schutz gegen Schmelzenspiegeloxydation und zur Schmierung erforderliche Gießpulver erst auf den Schmelzenspiegel aufgebracht werden kann, nachdem die Gießrohraustrittsöffnungen vollständig von der Schmelze bedeckt sind. Darüber hinaus wurde festgestellt, daß ein unzulässig hoher Ausziehwiderstand selbst dann auftreten kann, wenn der flüssige Metallsumpf sich bis in den Parallelabschnitt der Kokille erstreckt. Die geschilderten Probleme führen innerhalb des kurzen Angießzeitraumes auf der Gießbühne zu Über- forderung des Bedienungspersonals und damit zu Bedienungsfehlern.The requirement that the liquid metal sump be constantly below the pouring range, i.e. It is particularly difficult to keep in the lower mold area, which determines the format, when casting on the steel strip caster, because on the one hand the inflowing melt on the cold mold walls and on the start-up head that closes the mold cools down particularly quickly, on the other hand, if the exit speed is too high, molten metal splashes up to the upper areas of the mold walls and cakes, which can prevent the formation of strands and breakthroughs can be caused. An additional difficulty is that the casting powder required for protection against melt level oxidation and for lubrication can only be applied to the melt level after the pour tube outlet openings have been completely covered by the melt. In addition, it was found that an inadmissibly high pull-out resistance can occur even if the liquid metal sump extends into the parallel section of the mold. The problems described lead to excessive demands on the operating personnel within the short casting time on the casting platform and thus to operating errors.

Danach ist Aufgabe der Erfindung die Schaffung eines Verfahrens zum Angießen einer Stahlbandgießanlage, das den gegensätzlichen Anforderungen bei Verwendung einer Bandgießkokille mit erweitertem Eingießbereich Rechnung trägt und bei dem unter Betriebsbedingungen sowohl eine kurze Angießzeit erreicht, als auch ein Steckenbleiben des Bandes in der Kokille vermieden wird.Accordingly, it is an object of the invention to provide a method for casting a steel strip caster, which takes into account the conflicting requirements when using a strip casting mold with an enlarged pouring area and which, under operating conditions, both achieves a short casting time and prevents the strip from getting stuck in the mold.

Die gestellte Aufgabe wird im Prinzip dadurch gelöst, daß der durch die Wirksamkeit der Vorschmierung und Reoxidation des nicht abgedeckten Badspiegels begrenzte Zeitraum besser ausgenutzt wird.In principle, the object is achieved in that the period limited by the effectiveness of the pre-lubrication and reoxidation of the bath level not covered is better utilized.

Die erfindungsgemäße Lösung besteht darin, daß die Höhenlage des Gießspiegels wegverfolgt wird, daß der Strangabzug zwischen Eintritt des Gießspiegels in den erweiterten Eingießbereich der Kokille und Bedecken der Gießrohraustrittsöffnungen gestartet und bis zur Erreichung der Sollgießspiegelhöhe auf eine Mindestabzugsgeschwindigkeit vBm erhöht wird, bei welcher das Gießsumpfende unterhalb des formatbestimmenden Parallelabschnittes bleibt.The solution according to the invention is that the height of the casting level is tracked away, that the strand withdrawal between the entry of the casting level into the extended pouring area of the mold and covering of the pouring tube outlet openings is started and until the target level is reached to a minimum withdrawal speed v B m, at which the The bottom of the pouring sump remains below the format-determining parallel section.

Das neue Verfahren ermöglicht eine genauere Regelung und Automatisierung des Angießvorganges, wodurch das Bedienungspersonal entlastet, Bedienungsfehler vermieden und die Betriebssicherheit insgesamt verbessert werden. Das Verfahren trägt insbesondere der Tatsache Rechnung, daß sich innerhalb des Metallsumpfes ausgehend von der Strangschale eine heterogene Zone des Kristallwachstums ausbildet. Dabei kann es durch unterschiedliches Wachstum der Kristalle gegenüberliegender Wandungen bereits im Eingießbereich zur Bildung von Brücken kommen, die einer Reduzierung der Banddicke einen Widerstand entgegensetzen und die Bandausförderung behindern.The new process enables more precise control and automation of the casting process, which relieves the operating personnel, avoids operating errors and improves overall operational safety. The method takes into account in particular the fact that a heterogeneous zone of crystal growth forms within the metal sump starting from the strand shell. Different growth of the crystals of opposing walls can lead to the formation of bridges in the pouring area, which oppose a reduction in the strip thickness and hinder the strip outfeed.

Beim Gießen von 50 mm dicken Stahlbändern wird der Strangabzug zwischen 15 und 25 Sek. nach dem Eingießbeginn gestartet. Die Mindestabzugsgeschwindigkeit beträgt 1,1 m/min.When casting 50 mm thick steel strips, the strand withdrawal is started between 15 and 25 seconds after the start of pouring. The minimum take-off speed is 1.1 m / min.

Die jeweilige Höhenlage des Gießspiegels wird vorteilhaft durch Temperaturmessung innerhalb der Kokillenwände ermittelt.The respective height of the mold level is advantageously determined by measuring the temperature within the mold walls.

Die Höhenlage des Gießsumpfendes wird durch kontinuierliche Kraftmessung an der Breitseitenoberfläche des Bandes unmittelbar unterhalb der Kokille ermittelt. Die Höhenlage des Gießsumpfendes kann alternativ durch kontinuierliche Ultraschallmessung in Banddickenrichtung unmittelbar unterhalb der Kokille ermittelt werden.The height of the end of the casting sump is determined by continuous force measurement on the broad side surface of the strip immediately below the mold. The height of the end of the casting sump can alternatively be determined by continuous ultrasound measurement in the strip thickness direction immediately below the mold.

Das Gießrohr kann zum Angießen in eine untere Angießposition gebracht werden und nach Bedecken der Gießrohraustrittsöffnungen in eine normale Betriebsstellung angehoben werden. Mit dem Beginn der Strangabzugsbewegung wird die Kokille oszillierend bewegt.The pouring tube can be brought into a lower pouring position for casting and can be raised to a normal operating position after covering the pouring tube outlet openings. When the strand withdrawal movement begins, the mold is moved in an oscillating manner.

In einem Regelsystem für das erfindungsgemäße Verfahren werden Meßdaten der Gießspiegel- und Gießsumpfendenlokalisierung fortlaufend einem Prozeßrechner zugeleitet und nach Sollwert-Istwertvergleich die Bandabzugsgeschwindigkeit vB und die entsprechende Eingießgeschwindigkeit vE geregelt.In a control system for the method according to the invention, measurement data of the localization of the mold level and the bottom of the pouring sump are continuously fed to a process computer and, after comparison of the setpoint and actual value, the strip take-off speed v B and the corresponding casting speed v E are regulated.

Der Zeitpunkt der Pulveraufgabe auf den Gießspiegel kann durch den Prozeßrechner bestimmt werden.The time of the powder application to the casting level can be determined by the process computer.

Eine Stahlbandgießanlage zur Durchführung des Verfahrens weist im Eingießbereich und im Parallelbereich der Breitseitenwände der Kokille mehrere Thermosensoren auf. Zur Gießsumpfendenermittlung sind der Kokille unmittelbar nachgeordnete Strangführungselemente mit Kraftsensoren versehen.A steel strip caster for carrying out the method has several thermal sensors in the pouring area and in the parallel area of the broad side walls of the mold. To determine the end of the casting sump, the strand guide elements immediately downstream of the mold are provided with force sensors.

Die Erfindung wird anhand der Zeichnung näher erläutert. Es zeigen

  • Fig. 1 schematisch eine Stahlbandgießanlage mit einem Querschnitt der Kokille,
  • Fig. 2 einen Längsschnitt der Kokille gemäß der Linie 11-11,
  • Fig. 3 vier in Kokillenquerschnitte eingezeichnete Phasen des Angießvorganges und
  • Fig. 4 je ein Diagramm für die Eingießgeschwindigkeit und die synchrone Bandabzugsgeschwindigkeit.
The invention is explained in more detail with reference to the drawing. Show it
  • 1 schematically shows a steel strip caster with a cross section of the mold,
  • 2 shows a longitudinal section of the mold along the line 11-11,
  • Fig. 3 four phases of the casting process and drawn in mold cross sections
  • Fig. 4 each a diagram for the casting speed and the synchronous tape take-off speed.

In einer Stahlbandgießanlage gemäß Fig. 1 und 2 fließt Stahlschmelze 1 aus einem Gießbehälter 2 von einem höhenverstellbaren Stopfen 3 geregelt durch ein Gießrohr 4 in eine Kokille 5, die von zwei gegenüberliegenden Breitseitenwänder 6 und zwei Schmalseitenwänden 7 gebildet wird. Breitseitenwände 6 und Schmalseitenwände 7 sind mit Kühlkanälen 8 versehen. Eine Oszillationsvorrichtung für die Kokille ist durch Pfeile 9 angedeutet. Die Breitseitenwände 6 bilden oberhalb eines formatbestimmenden Parallelabschnittes 10 einen sich nach oben erweiternden Eingießbereich 11 zur Aufnahme des Gießrohres 4.1 and 2, molten steel 1 flows from a casting tank 2 from a height-adjustable stopper 3 through a pouring pipe 4 into a mold 5, which is formed by two opposite broad side walls 6 and two narrow side walls 7. Broad side walls 6 and narrow side walls 7 are provided with cooling channels 8. An oscillation device for the mold is indicated by arrows 9. The broad side walls 6 form, above a format-determining parallel section 10, a pouring region 11 which widens upwards to accommodate the pouring tube 4.

Die bei Gießbeginn zuerst in die Kokille 5 einströmende Stahlschmelze 1 verbindet sich mit einem Anfahrkopf 12 der an einem Anfahrstrang 13 befestigt ist. Der sich bildende Gießspiegel 14 steigt über die seitlichen Ausflußöffnungen 15 des Gierohres 4 an und wird danach zur Schmierung und zu Verhinderung der Oxydation durch Gießpulver abgedeckt. Zur Ermittlung der momentanen Höhe des Gießspiegels 14 sind in den Breitseitenwänden Thermoelemente 16 vorgesehen. Der Anfahrstrang 13 befindet sich bei Gießbeginn in einer der Kokille nachgeordneten aus Rollen 17 bestehenden Strangführung. Am Ende der Strangführung ist ein Treiber 18 zur Ausförderung zunächst des Anfahrstranges 13 und anschließend des gegossenen Stahlbandes angeordnet. Unmittelbar unterhalb der Kokille 5 ist eine Messeinrichtung 19 zur Ermittling der von ferrostatischen Druck auf die Bandschale 22 wirkenden Kraft angeordnet. Hierzu werden Kraftsensoren 19 verwendetThe molten steel 1 flowing into the mold 5 at the start of casting connects to a starting head 12 which is fastened to a starting strand 13. The casting mold 14 which forms rises above the lateral outflow openings 15 of the yaw tube 4 and is then covered by casting powder for lubrication and to prevent oxidation. Thermocouples 16 are provided in the broad side walls to determine the instantaneous height of the mold level 14. At the start of casting, the starting strand 13 is located in a strand guide consisting of rollers 17 and arranged downstream of the mold. At the end of the strand guide, a driver 18 for conveying the starting strand 13 and then the cast steel strip is arranged. A measuring device 19 for determining the force acting on the belt shell 22 from ferrostatic pressure is arranged directly below the mold 5. Force sensors 19 are used for this

Die Meßdaten der Thermoelemente 16 und Kraftsensoren 19 werden einem Prozeßrechner 20 zugeleitet, der nach Sollwert-Istwertvergleich die erforderliche Bandabzugsgeschwindigkeit vB für die Treiber 18 und die entsprechende Eingießgeschwindigkeit vE für das Stellgerät 21 des Stopfens 3 bestimmt.The measurement data of the thermocouples 16 and force sensors 19 are fed to a process computer 20 which, after comparison of the target value and actual value, determines the required strip take-off speed v B for the drivers 18 and the corresponding pouring speed v E for the actuator 21 of the stopper 3.

Wie aus Fig. 3 zu ersehen, erstarrt der flüssige Stahl an den gekühlten Brietseitenwänden 6 und Schmalseitenwänden 7 der Kokille 5 zu Bandschalen 22, deren Dicke nach unten zunimmt. Die im Bereich des erweiterten Eingießbereichs 11 an den Breitseitenwänden 6 sich bildenden Bandschalen 22 werden im Verlauf der Absenkbewegung zum formatbestimmenden Parallelabschnitt 10 einander genähert.As can be seen from Fig. 3, the liquid steel solidifies on the cooled Brietseitenweiten 6 and narrow side walls 7 of the mold 5 to band shells 22, the thickness of which increases downwards. The band shells 22 which form in the region of the enlarged pouring area 11 on the broad side walls 6 are brought closer to one another in the course of the lowering movement to the format-determining parallel section 10.

Vor Gießbeginn werden die Kokillenwandungen 6, 7 geschmiert. Danach läuft das in Fig. 3 in Phasen A, B, C, D - F und in Fig. 4 in Diagrammen für die Eingießgeschwindigkeit VE und die Bandabzugsgeschwindigkeit vB synchron dargestellte Angießverfahren ab.The mold walls 6, 7 are lubricated before the start of casting. Thereafter, the casting process shown in FIG. 3 in phases A, B, C, D - F and in FIG. 4 in diagrams for the casting speed VE and the strip removal speed v B is carried out synchronously.

Mit A ist der Beginn der Stahlzufuhr vE bezeichnet. Sobald der Gießspiegel 14 den Parallelabschnitt 10 der Kokille 5 verlassen hat (H'), wird in der Phase B der Strangabzug gestartet und bis zum Zeitpunkt C auf einen Wert gebracht, bei dem das Gießsumpfende 23 aus dem Parallelabschnitt 10 wandert. Nachdem der Gießspiegel 14 die Ausflußöffnungen 15 des Gießrohres 4 bedeckt hat (H"), kann das Gießpulver aufgebracht werden. Durch weitere Steigerung von ve und vB erreicht der Gießspiegel 14 zum Zeitpunkt D seine Sollhöhe (Hsoii). Im Zeitabschnitt B-D ist die Mindestabzugsgeschwindigkeit VBm eine Funktion der momentanen Badspiegelhöhe H im Eingießbereich 11. Nach einer Stabilisierungsphase D - E werden VE und vB in gegenseitiger Abhängigkeit auf die vorgesehenen Betriebswerte bei F hochgefahren.With A the beginning of the steel supply v E is designated. As soon as the mold level 14 has left the parallel section 10 of the mold 5 (H '), the phase draw is started in phase B and brought to a value at time C at which the pouring sump end 23 migrates out of the parallel section 10. After the pouring level 14 has covered the outflow openings 15 of the pouring tube 4 (H "), the pouring powder can be applied. By further increasing ve and v B , the pouring level 14 reaches its desired height (Hsoii) at time D. In the time interval BD is the minimum withdrawal speed VB m is a function of the current bath level height H in the pouring area 11. After a stabilization phase D - E, VE and v B are ramped up to the intended operating values at F in mutual dependence.

Claims (11)

1. Method for initial casting in a steel strip casting plant with a chill mould with cooled narrow side walls and wide side walls, which for the reception of a casting tube displays an upwardly enlarged pouring-in region in the region of the wide side walls above a format-determining parallel portion, characterised thereby, that the height position of the casting level (14) is tracked, that the strand take-off between entry of the casting level (14) into the enlarged pouring-in region (11) of the chill mould (5) and coverage of the casting tube exit openings (15) is started and increased until attainment of the target casting level height to a minimum take-off speed Vbm, at which the casting sump end (23) remains below the format-determining parallel portion (10).
2. Method according to claim 1, characterised thereby, that for the casting of steel strips of a thickness of 50 millimetres, the strand take-off is started between 15 and 25 seconds after the start of pouring-in and the minimum strip take-off speed amounts to 1.1 metres per minute.
3. Method according to claim 1, characterised thereby, that the height position of the casting level (14) is determined by temperature measurement within the chill mould walls (6).
4. Method according to claim 1, characterised thereby, that the height position of the casting sump end (23) is determined by continuous force measurement at the wide side surface of the strip underneath the chill mould (5).
5. Method according to claim 1, characterised thereby, that the height position of the casting sump end (23) is determined by continuous ultrasonic measurement in strip thickness direction underneath the chill mould (5).
6. Method according to claim 1, characterised thereby, that the casting tube (4) stands in a lower initial casting position for initial casting and is raised into an upper operative setting after coverage of the casting tube exit openings (15).
7. Method according to claim 1, characterised thereby, that the chill mould (5) is moved oscillating- ly from the beginning of the strand take-off.
8. Regulating system according to one or more of the claims 1 to 7, characterised thereby, that the measurement data of the location of casting level and casting sump end are conducted continuously to a process computer (20) and the strip take-off speed VB and the corresponding pouring-in speed VE are regulated after comparison of target and actual value.
9. Regulating system according to claim 8, characterised thereby, that the instant of powder charge on the casting level (14) is determined by the process computer (20).
10. Device for the performance of the method according to one or more of the claims 1 to 7, characterised by several thermocouples or thermal sensors (16) arranged in the pouring-in region (11) and in the parallel portion (10) of the wide side walls (6).
11. Device for the performance of the method according to one or more of the claims 1 to 7, characterised thereby, that strand guide elements arranged immediately downstream of the chill mould are provided with force sensors (19).
EP87102282A 1986-02-27 1987-02-18 Method for starting up a steel strip casting machine Expired - Lifetime EP0238844B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IN98/MAS/87A IN169225B (en) 1986-02-27 1987-02-13
AT87102282T ATE51782T1 (en) 1986-02-27 1987-02-18 PROCEDURE FOR CASTING A STEEL STRIP CASTING PLANT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3606290 1986-02-27
DE3606290 1986-02-27

Publications (2)

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EP0238844A1 EP0238844A1 (en) 1987-09-30
EP0238844B1 true EP0238844B1 (en) 1990-04-11

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EP87102282A Expired - Lifetime EP0238844B1 (en) 1986-02-27 1987-02-18 Method for starting up a steel strip casting machine

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US (1) US4787438A (en)
EP (1) EP0238844B1 (en)
JP (1) JPS62203651A (en)
KR (1) KR950014347B1 (en)
CN (1) CN1011387B (en)
CA (1) CA1286874C (en)
DE (1) DE3762192D1 (en)
ES (1) ES2014002B3 (en)

Cited By (1)

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DE4131829A1 (en) * 1990-10-02 1992-04-16 Mannesmann Ag LIQUID-COOLED CHOCOLATE FOR THE CONTINUOUS CASTING OF STEELS IN STEEL SIZE

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3801932A1 (en) * 1988-01-23 1989-08-03 Schloemann Siemag Ag METHOD FOR CASTING A STEEL STRIP IN A STEEL STRIP CASTING SYSTEM
WO1990011150A1 (en) * 1989-03-23 1990-10-04 Siemens Aktiengesellschaft Process for regulating the continuous casting of steel
DE4103963A1 (en) * 1991-02-09 1992-08-13 Kabelmetal Ag METHOD FOR THE CONTINUOUS CONTINUOUS CASTING OF COPPER ALLOYS
IT1262073B (en) * 1993-02-16 1996-06-19 Danieli Off Mecc LINGOTTIERA FOR CONTINUOUS CASTING OF THIN SLABS
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KR950014347B1 (en) 1995-11-25
CA1286874C (en) 1991-07-30
CN87100985A (en) 1987-09-09
JPS62203651A (en) 1987-09-08
ES2014002B3 (en) 1990-06-16
EP0238844A1 (en) 1987-09-30
DE3762192D1 (en) 1990-05-17
CN1011387B (en) 1991-01-30
KR870007738A (en) 1987-09-21
US4787438A (en) 1988-11-29

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