EP2335847A1 - Device for pouring into a strand casting assembly - Google Patents

Device for pouring into a strand casting assembly Download PDF

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Publication number
EP2335847A1
EP2335847A1 EP09015739A EP09015739A EP2335847A1 EP 2335847 A1 EP2335847 A1 EP 2335847A1 EP 09015739 A EP09015739 A EP 09015739A EP 09015739 A EP09015739 A EP 09015739A EP 2335847 A1 EP2335847 A1 EP 2335847A1
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EP
European Patent Office
Prior art keywords
strand
cold
guide
cold strand
safety device
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.)
Granted
Application number
EP09015739A
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German (de)
French (fr)
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EP2335847B1 (en
Inventor
Philip Eichenberger
Thomas Meier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Concast AG
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SMS Concast AG
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Filing date
Publication date
Application filed by SMS Concast AG filed Critical SMS Concast AG
Priority to EP09015739.7A priority Critical patent/EP2335847B1/en
Priority to US12/963,696 priority patent/US8267150B2/en
Priority to KR1020100127315A priority patent/KR20110070791A/en
Priority to CN201010593954XA priority patent/CN102101161A/en
Priority to RU2010151910/02A priority patent/RU2010151910A/en
Publication of EP2335847A1 publication Critical patent/EP2335847A1/en
Application granted granted Critical
Publication of EP2335847B1 publication Critical patent/EP2335847B1/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
    • B22D11/08—Accessories for starting the casting procedure
    • B22D11/085—Means for storing or introducing the starter bars in the moulds
    • 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
    • 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
    • B22D11/08—Accessories for starting the casting procedure
    • B22D11/081—Starter bars

Definitions

  • the invention relates to a device for casting a continuous casting plant according to the preamble of claim 1.
  • the movement of the cold strand is determined by the drive torque imparted by the drive rollers and by the contact force and coefficient of friction between the drive and guide rollers and the cold strand. Faults, such as a power failure, can lead to an uncontrollable movement of the cold strand. This can lead to damage to the system both when entering and when casting.
  • the present invention has for its object to provide a device of the type mentioned, in which the risk that it comes to slipping of the cold strand, is largely eliminated.
  • a safety device is provided for the dummy bar, the one with the cold strand in a form-fitting
  • the element which can be brought into engagement with the cold strand is preferably designed as a toothed wheel, which is operatively connected to the dummy leg in the manner of a drive or gear drive.
  • the predetermined over the drive rollers the cold strand speed issued exceeds the gear element exerts a braking force or a rotational resistance of the dummy bar.
  • the safety device advantageously comprises an autonomous, hydraulic circulatory system with a pump, for example a gear pump (which is operatively connected to the gear element) and with a throttle.
  • a pump for example a gear pump (which is operatively connected to the gear element) and with a throttle.
  • the resistance of the gear element which is practically resistant to resistance during normal operation, can be increased by the circulation system and by a transmission gear when the cold strand is exceeded due to slip.
  • the safety device is an autonomous system independent of the roller drive, for example, thus ensuring that e.g. during power failure and consequent loss of drive torque or the contact force no slipping of the cold strand occurs.
  • Fig.1 shows schematically the structure of a continuous casting plant 1 with a water cooled mold 2, which is filled with liquid metal, in particular steel. From the mold 2, a cast strand 3 is led away with the formation of a shell, which is a preliminary profile. The casting strand 3 is conveyed away by means of rollers 11, 12 of an arcuate strand guide 10 and bent into the horizontal. As in Fig. 1 indicated by dashed lines, the cast strand 3 'could also be carried away purely vertically by means of a vertical strand guide 10'.
  • rollers 11 arranged on the outside of the arcuate strand guide 10 or of the pre-profile strand produced in a casting radius are stationary guide rollers
  • the rollers 12 located on the inside form the drive rollers and can be adjusted radially to the casting arc.
  • the vertical strand guide 10 ' has fixed to one side guide rollers 11' and to the other side perpendicular to the vertical casting direction adjustable drive rollers 12 '.
  • a cold strand is known to be moved and held, which is used for the casting of the corresponding continuous casting 1, 1' and serves to close the lower KokillenO réelle 15 before and during the Angiessvorganges to prevent leakage in the to avoid the mold 2 of cast steel.
  • the introduced by means of the strand guide 10 or 10 'in the mold 2 cold strand is - after the cast in the mold 2 steel was brought to partial solidification, so that a strand with a sufficiently thick solidified edge zone and liquid core is formed - by means of strand guide 10 or 10 'deducted again.
  • the movement of the cold strand both during insertion and removal by the on the drive rollers 12, 12 'issued drive torque and by the contact force and friction between the drive and guide rollers 11, 11'; 12, 12 'and the dummy strand determined.
  • a safety device 20 or 20 ' is provided both for the chain cold strand guided through the arcuate strand guide 10 and for the rigid cold strand guided through the vertical strand guide 10', which ensures that it decreases or loses the contact pressure or friction coefficient and when falling or loss of the drive torque does not come to slippage of the cold strand, which would inevitably lead to damage of the continuous casting 1 or 1 '.
  • safety devices 20, 20 ' are constructed on the same principle.
  • the safety device 20 is arranged on the inside of the strand guide 10, same as the drive rollers 12.
  • the safety device 20 ' is preferably on the same side as the deliverable rollers 12 'arranged.
  • Fig. 2 to 4 the safety device 20 'provided for the vertical continuous casting installation 1' and cooperating with the rigid cold strand 22 is shown, which is described in more detail below:
  • the inventive, on the same side as the drive rollers 12 'arranged safety device 20' has a formed as a gear member 25 which can be brought into a positive engagement with a toothing 26 of the cold strand 22, in the manner of a Triebstock- or gear drive.
  • the toothing 26 is formed by a plurality of transverse pins.
  • the gear member 25 is coupled perpendicular to the casting direction (in the arcuate strand guide 10 radially to the casting sheet) in the toothing and must be disconnected again at the time of removal from the upper end of the cold strand 22 or the cold strand head, so that the following hot strand is not damaged. This happens automatically for example, by means of a not shown in the drawing, controllable toggle lever system.
  • the safety device 20 'further comprises an autonomous hydraulic circuit system with a hydraulic pump (which is operatively connected to the gear element 25) and with a throttle (the circuit system is not apparent from the drawing).
  • a hydraulic pump which is operatively connected to the gear element 25
  • a throttle the circuit system is not apparent from the drawing.
  • the safety device is an autonomous, for example, independent of the roller drive system, it is ensured that, for example, in the power failure and consequent loss of the drive torque or the contact force no slipping of the cold strand 22 takes place.
  • the gear element 25 (and also the transmission gear 27, 28, 29, 30, 31) for the purpose of coupling and decoupling perpendicular to the casting direction (or radially to the casting sheet) adjustable.
  • the entire safety device 20 'or 20 can be adjusted in this direction, preferably together, depending on the format of the casting strand 3 or the corresponding cold strand to be produced with respect to the stationary guide rollers 11 'and 11 adjustable drive rollers 12' and 12 respectively.
  • Fig. 3 Furthermore, two pivotable protective flaps 41, 42 are indicated, which are illustrated in the engaged state of the gear element 25 in the open position.
  • these protective flaps 41, 42 are pivoted by a mechanism not shown in detail against the strand and they then serve as a closed heat shield of the transmission in this safety device.

Abstract

The device for starting up a continuous casting plant, comprises a strand guide having mold and/or a drive- and guidance roller (11', 12'), a cold strand (22) guidable over the strand guide in the mold, and a safety device (20') for the cold strand that brings in a positive-fit interference, where the safety device has element (25) limiting the speed of the cold strand. The element is automatically coupled from the upper end of the cold strand during guiding the cold strand and/or is bringable from the interference with the cold strand. The device for starting up a continuous casting plant, comprises a strand guide having mold and/or a drive- and guidance roller (11', 12'), a cold strand (22) guidable over the strand guide in the mold, and a safety device (20') for the cold strand that brings in a positive-fit interference, where the safety device has element (25) limiting the speed of the cold strand. The element is automatically coupled from the upper end of the cold strand during guiding the cold strand and/or is bringable from the interference with the cold strand. The element is formed as a gear wheel that is connected in the type of a gear rack- or gear drive with the cold strand and is provided for exercising a brake force during exceeding a pre-determined speed delivered over the drive rollers of the cold strand. The safety device comprises autonomous, hydraulic circulation system with a pump connected with the wheel element and with a choke. The rotary variable resistor of the wheel element is increased over the circulation system and a step-up gear unit. The wheel element is bringable with a chain cold strand in grip that is guided in an arc-forming strand guide, which comprises stationary arranged guide rollers on its exit side and drive rollers adjustable radially to the cast arc on its internal side. The safety device is arranged on the internal side of the strand guide and the wheel-element is bringable radially to cast arc with the chain cold strand. The wheel element is bringable with a gear (26) of a stationary cold strand that is guided in a vertical strand guide. The vertical strand guide has guide rollers stationary arranged to a side and drive rollers adjustable to another side vertically to cast direction. The wheel element is bringable from the same side like the drive rollers with the gear. A controllable knee lever system is provided for coupling- and decoupling of the element. The safety device is adjustable according to format of the cast strand to be produced, and/or corresponding cold strand together with the drive roller relative to strand guide defined through the stationary guide rollers.

Description

Die Erfindung betrifft eine Vorrichtung zum Angiessen einer Stranggiessanlage gemäss dem Oberbegriff des Anspruches 1.The invention relates to a device for casting a continuous casting plant according to the preamble of claim 1.

Es ist bekannt, für das Angiessen einer Stranggiessanlage die untere Kokillen-Öffnung vor und während des Angiessvorganges mit einem Kaltstrang dicht abzuschliessen, um ein Ausfliessen des in die Kokille gegossenen Stahles zu vermeiden. Der Kaltstrang wird über die für den Giessstrang vorgesehene Strangführung, die Antriebs- und Führungsrollen umfasst, in die Kokille eingeführt. Der in die Kokille eingegossene Stahl wird zur teilweisen Erstarrung gebracht, so dass ein Strang mit einer erstarrter Randzone und flüssigem Kern entsteht. Sobald diese Randzone eine ausreichend Dicke aufweist, wird der Kaltstrang (und nach ihm der Warmstrang, wobei in die Kokille weiterhin Stahl nachgegossen wird) aus der Kokille abgezogen, wiederum mittels der Strangführung.It is known to close the lower die opening before and during the Angiessvorganges with a cold strand tightly for the casting of a continuous casting, in order to avoid leakage of cast into the mold steel. The dummy bar is over the one for the cast strand provided strand guide comprising drive and guide rollers, introduced into the mold. The cast in the mold steel is brought to partial solidification, so that a strand with a solidified edge zone and liquid core is formed. Once this edge zone has a sufficient thickness, the cold strand (and after him the hot strand, wherein the mold is further poured steel) withdrawn from the mold, again by means of the strand guide.

Die Bewegung des Kaltstranges wird durch das über die Antriebsrollen erteilte Antriebsmoment sowie durch die Anpresskraft und Reibwerte zwischen den Antriebs- und Führungsrollen und dem Kaltstrang bestimmt. Störungen, wie zum Beispiel bei einem Stromausfall, können zu einer unkontrollierbaren Bewegung des Kaltstranges führen. Dies kann sowohl beim Einfahren als auch beim Angiessen zu Beschädigungen der Anlage führen.The movement of the cold strand is determined by the drive torque imparted by the drive rollers and by the contact force and coefficient of friction between the drive and guide rollers and the cold strand. Faults, such as a power failure, can lead to an uncontrollable movement of the cold strand. This can lead to damage to the system both when entering and when casting.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art zu schaffen, bei der die Gefahr, dass es zum Durchrutschen des Kaltstranges kommt, weitgehend eliminiert wird.The present invention has for its object to provide a device of the type mentioned, in which the risk that it comes to slipping of the cold strand, is largely eliminated.

Diese Aufgabe wird erfindungsgemäss durch eine Vorrichtung mit den Merkmalen des Anspruches 1 gelöst.This object is achieved according to the invention by a device having the features of claim 1.

Weitere bevorzugte Ausgestaltungen der erfindungsgemässen Vorrichtung bilden den Gegenstand der abhängigen Ansprüche.Further preferred embodiments of the inventive device form the subject of the dependent claims.

Dadurch, dass erfindungsgemäss eine Sicherheitsvorrichtung für den Kaltstrang vorgesehen ist, die ein mit dem Kaltstrang in einen formschlüssigenCharacterized in that according to the invention a safety device is provided for the dummy bar, the one with the cold strand in a form-fitting

Eingriff bringbares und die Geschwindigkeit des Kaltstranges begrenzendes Element aufweist, wird gewährleistet, dass eine vorbestimmte maximale Stranggeschwindigkeit nicht überschritten werden kann und es nicht zum Durchrutschen des Kaltstranges kommt.Engagement engageable and the speed of the cold strand limiting element, it is ensured that a predetermined maximum strand speed can not be exceeded and it does not come to slippage of the cold strand.

Das mit dem Kaltstrang in Eingriff bringbare Element ist vorzugsweise als ein Zahnrad ausgebildet ist, das in der Art eines Triebstock- oder Zahnradantriebes mit dem Kaltstrang wirkverbunden ist. Beim Überschreiten der vorbestimmten, über die Antriebsrollen dem Kaltstrang erteilten Geschwindigkeit übt das Zahnrad-Element eine Bremskraft bzw. einen Drehwiderstand auf den Kaltstrang aus.The element which can be brought into engagement with the cold strand is preferably designed as a toothed wheel, which is operatively connected to the dummy leg in the manner of a drive or gear drive. When the predetermined, over the drive rollers the cold strand speed issued exceeds the gear element exerts a braking force or a rotational resistance of the dummy bar.

Dabei umfasst die Sicherheitsvorrichtung mit Vorteil ein autonomes, hydraulisches Kreislaufsystem mit einer Pumpe, beispielsweise einer Zahnradpumpe, (die mit dem Zahnrad-Element wirkverbunden ist) und mit einer Drossel. Der im Normalbetrieb praktisch widerstandslose Drehwiderstand des Zahnrad-Elementes kann beim rutschbedingten Geschwindigkeits-Überschreiten des Kaltstranges über das Kreislaufsystem und über ein Übersetzungsgetriebe erhöht werden.The safety device advantageously comprises an autonomous, hydraulic circulatory system with a pump, for example a gear pump (which is operatively connected to the gear element) and with a throttle. The resistance of the gear element, which is practically resistant to resistance during normal operation, can be increased by the circulation system and by a transmission gear when the cold strand is exceeded due to slip.

Mit Vorteil stellt die Sicherheitsvorrichtung ein autonomes, beispielsweise vom Rollenantrieb unabhängiges System dar, womit sichergestellt wird, dass z.B. beim Stromausfall und dadurch bedingtem Verlust des Antriebsmomentes oder der Anpresskraft kein Durchrutschen des Kaltstranges erfolgt.Advantageously, the safety device is an autonomous system independent of the roller drive, for example, thus ensuring that e.g. during power failure and consequent loss of drive torque or the contact force no slipping of the cold strand occurs.

Die Erfindung wird nachfolgend anhand der Zeichnung näher erläutert. Es zeigen:

  • Fig. 1 schematisch eine Stranggiessanlage;
  • Fig. 2 in perspektivischer Darstellung ein Ausführungsbeispiel einer erfindungsgemässen Vorrichtung zum Angiessen einer Stranggiessanlage;
  • Fig. 3 die Vorrichtung nach Fig. 2 in vertikalem Querschnitt; und
  • Fig. 4 die Vorrichtung nach Fig. 2 in Draufsicht.
The invention will be explained in more detail with reference to the drawing. Show it:
  • Fig. 1 schematically a continuous casting plant;
  • Fig. 2 a perspective view of an embodiment of an inventive device for casting a continuous casting plant;
  • Fig. 3 the device after Fig. 2 in vertical section; and
  • Fig. 4 the device after Fig. 2 in plan view.

Fig.1 zeigt schematisch den Aufbau einer Stranggiessanlage 1 mit einer mit Wasser gekühlten Kokille 2, die mit flüssigem Metall, insbesondere Stahl, gefüllt wird. Aus der Kokille 2 wird unter Schalenbildung ein Giessstrang 3 weggeführt, bei dem es sich um ein Vorprofil handelt. Der Giessstrang 3 wird mittels Rollen 11, 12 einer bogenförmigen Strangführung 10 wegbefördert und in die Horizontale gebogen. Wie in Fig. 1 gestrichelt angedeutet, könnte der Giessstrang 3' auch rein vertikal mittels einer vertikalen Strangführung 10' weggeführt werden. Fig.1 shows schematically the structure of a continuous casting plant 1 with a water cooled mold 2, which is filled with liquid metal, in particular steel. From the mold 2, a cast strand 3 is led away with the formation of a shell, which is a preliminary profile. The casting strand 3 is conveyed away by means of rollers 11, 12 of an arcuate strand guide 10 and bent into the horizontal. As in Fig. 1 indicated by dashed lines, the cast strand 3 'could also be carried away purely vertically by means of a vertical strand guide 10'.

Während es sich bei den auf der Aussenseite der bogenförmigen Strangführung 10 bzw. des in einem Giessradius erzeugten Vorprofilstranges angeordneten Rollen 11 um ortsfeste Führungsrollen handelt, bilden die auf der Innenseite befindlichen Rollen 12 die Antriebsrollen und sind radial zum Giessbogen einstellbar.While the rollers 11 arranged on the outside of the arcuate strand guide 10 or of the pre-profile strand produced in a casting radius are stationary guide rollers, the rollers 12 located on the inside form the drive rollers and can be adjusted radially to the casting arc.

Auch die vertikale Strangführung 10' weist zu einer Seite ortsfest angeordnete Führungsrollen 11' und zu der anderen Seite senkrecht zur vertikalen Giessrichtung einstellbare Antriebsrollen 12' auf.Also, the vertical strand guide 10 'has fixed to one side guide rollers 11' and to the other side perpendicular to the vertical casting direction adjustable drive rollers 12 '.

Über die Strangführungen 10, 10' wird bekanntlich auch ein Kaltstrang bewegt und gehalten, der für das Angiessen der entsprechenden Stranggiessanlage 1, 1' verwendet wird und dazu dient, die untere KokillenÖffnung 15 vor und während des Angiessvorganges dicht abzuschliessen, um ein Ausfliessen des in die Kokille 2 gegossenen Stahles zu vermeiden. Der mittels der Strangführung 10 bzw. 10' in die Kokille 2 eingeführte Kaltstrang wird - nachdem der in die Kokille 2 eingegossene Stahl zur teilweisen Erstarrung gebracht wurde, so dass ein Strang mit einer ausreichend dicken erstarrten Randzone und flüssigem Kern entstanden ist - mittels der Strangführung 10 bzw. 10' auch wieder abgezogen. Dabei ist die Bewegung des Kaltstranges sowohl beim Einführen als auch beim Abziehen durch das über die Antriebsrollen 12, 12' erteilte Antriebsmoment sowie durch die Anpresskraft und Reibwerte zwischen den Antriebs- und Führungsrollen 11, 11'; 12, 12' und dem Kaltstrang bestimmt.About the strand guides 10, 10 ', a cold strand is known to be moved and held, which is used for the casting of the corresponding continuous casting 1, 1' and serves to close the lower KokillenOffnung 15 before and during the Angiessvorganges to prevent leakage in the to avoid the mold 2 of cast steel. The introduced by means of the strand guide 10 or 10 'in the mold 2 cold strand is - after the cast in the mold 2 steel was brought to partial solidification, so that a strand with a sufficiently thick solidified edge zone and liquid core is formed - by means of strand guide 10 or 10 'deducted again. In this case, the movement of the cold strand both during insertion and removal by the on the drive rollers 12, 12 'issued drive torque and by the contact force and friction between the drive and guide rollers 11, 11'; 12, 12 'and the dummy strand determined.

Sowohl für die Stranggiessanlage 1 mit der bogenförmigen Strangführung 10 als auch für die vertikale Strangführung 10' kann in an sich herkömmlicher Weise ein starrer Kaltstrang oder ein Kettenkaltstrang verwendet werden.Both for the continuous casting 1 with the arcuate strand guide 10 and for the vertical strand guide 10 'can be used in a conventional manner, a rigid cold strand or a cold chain strand.

Erfindungsgemäss ist sowohl für den durch die bogenförmigen Strangführung 10 geführten Kettenkaltstrang als auch für den durch die vertikale Strangführung 10' geführten starren Kaltstrang eine Sicherheitsvorrichtung 20 bzw. 20' vorgesehen, die dafür sorgt, dass es beim Abfallen oder Verlust der Anpresskraft bzw. des Reibwertes sowie beim Abfallen oder Verlust des Antriebsmomentes nicht zum Durchrutschen des Kaltstranges kommt, was unweigerlich zur Beschädigung der Stranggiessanlage 1 bzw. 1' führen würde.According to the invention, a safety device 20 or 20 'is provided both for the chain cold strand guided through the arcuate strand guide 10 and for the rigid cold strand guided through the vertical strand guide 10', which ensures that it decreases or loses the contact pressure or friction coefficient and when falling or loss of the drive torque does not come to slippage of the cold strand, which would inevitably lead to damage of the continuous casting 1 or 1 '.

Die in Fig. 1 angedeuteten Sicherheitsvorrichtungen 20, 20' sind auf gleichem Prinzip aufgebaut. Bei der mit der bogenförmigen Strangführung 10 versehenen Stranggiessanlage 1 ist die Sicherheitsvorrichtung 20 auf der Innenseite der Strangführung 10 angeordnet, gleich wie die Antriebsrollen 12. Bei der mit der vertikalen Strangführung 10' versehenen Stranggiessanlage 1' ist die Sicherheitsvorrichtung 20' vorzugsweise auf der gleichen Seite wie die zustellbaren Rollen 12' angeordnet.In the Fig. 1 indicated safety devices 20, 20 'are constructed on the same principle. In the continuous casting machine 1 provided with the arcuate strand guide 10, the safety device 20 is arranged on the inside of the strand guide 10, same as the drive rollers 12. In the continuous casting line 1 'provided with the vertical strand guide 10', the safety device 20 'is preferably on the same side as the deliverable rollers 12 'arranged.

In Fig. 2 bis 4 ist die für die vertikale Stranggiessanlage 1' vorgesehene, mit dem starren Kaltstrang 22 zusammenwirkende Sicherheitsvorrichtung 20' dargestellt, die im folgenden näher beschrieben wird:In Fig. 2 to 4 the safety device 20 'provided for the vertical continuous casting installation 1' and cooperating with the rigid cold strand 22 is shown, which is described in more detail below:

Die erfindungsgemässe, zur gleichen Seite wie die Antriebsrollen 12' angeordnete Sicherheitsvorrichtung 20' weist ein als ein Zahnrad ausgebildetes Element 25 auf, das in einen formschlüssigen Eingriff mit einer Verzahnung 26 des Kaltstranges 22 gebracht werden kann, in der Art eines Triebstock- oder Zahnradantriebes. Beim dargestellten Ausführungsbeispiel ist die Verzahnung 26 durch eine Vielzahl von Querzapfen gebildet. (Bei Verwendung des in der bogenförmigen Strangführung 10 geführten Kettenkaltstranges kann das Element in einen formschlüssigen Eingriff mit den einzelnen Gliedern des Kettenkaltstranges gebracht werden). Das Zahnrad-Element 25 wird senkrecht zur Giessrichtung (bei der bogenförmigen Strangführung 10 radial zum Giessbogen) in die Verzahnung eingekoppelt und muss beim Abziehen wieder rechtzeitig vom oberen Ende des Kaltstranges 22 bzw. vom Kaltstrangkopf weggekoppelt werden, damit der nachfolgende Warmstrang nicht beschädigt wird. Dies geschieht automatisch beispielsweise mit Hilfe eines in der Zeichnung nicht dargestellten, steuerbaren Kniehebelsystems.The inventive, on the same side as the drive rollers 12 'arranged safety device 20' has a formed as a gear member 25 which can be brought into a positive engagement with a toothing 26 of the cold strand 22, in the manner of a Triebstock- or gear drive. In the illustrated embodiment, the toothing 26 is formed by a plurality of transverse pins. (When using the chain cold strand guided in the arcuate strand guide 10, the element can be brought into positive engagement with the individual links of the chain cold strand). The gear member 25 is coupled perpendicular to the casting direction (in the arcuate strand guide 10 radially to the casting sheet) in the toothing and must be disconnected again at the time of removal from the upper end of the cold strand 22 or the cold strand head, so that the following hot strand is not damaged. This happens automatically for example, by means of a not shown in the drawing, controllable toggle lever system.

Die Sicherheitsvorrichtung 20' umfasst ferner ein autonomes, hydraulisches Kreislaufsystem mit einer Hydraulikpumpe (die mit dem Zahnrad-Element 25 wirkverbunden ist) und mit einer Drossel (Das Kreislaufsystem ist aus der Zeichnung nicht ersichtlich). Beim rutschbedingten Überschreiten einer vorbestimmten, über die Antriebsrollen 12' dem Kaltstrang 22 erteilten Geschwindigkeit wird über das hydraulische Kreislaufsystem und über ein weitere Zahnräder 27, 28, 29, 30 bzw. Triebstockverzahnungen 31 umfassendes Übersetzungsgetriebe der Drehwiderstand des Zahnrad-Elementes 25 erhöht und somit eine Bremswirkung auf den Kaltstrang 22 ausgeübt, und zwar in quadratischer Abhängigkeit Geschwindigkeit/Drehwiderstand.The safety device 20 'further comprises an autonomous hydraulic circuit system with a hydraulic pump (which is operatively connected to the gear element 25) and with a throttle (the circuit system is not apparent from the drawing). When slipping due to exceeding a predetermined, about the drive rollers 12 'the cold run 22 speed distributed over the hydraulic circulatory system and a further gears 27, 28, 29, 30 or rack gears 31 comprehensive transmission gearbox, the rotational resistance of the gear element 25 is increased and thus a Braking effect exerted on the dummy bar 22, in quadratic dependence speed / rotational resistance.

Dadurch, dass die Sicherheitsvorrichtung ein autonomes, beispielsweise vom Rollenantrieb unabhängiges System darstellt, wird sichergestellt, dass beispielsweise beim Stromausfall und dadurch bedingtem Verlust des Antriebsmomentes oder der Anpresskraft kein Durchrutschen des Kaltstranges 22 erfolgt.The fact that the safety device is an autonomous, for example, independent of the roller drive system, it is ensured that, for example, in the power failure and consequent loss of the drive torque or the contact force no slipping of the cold strand 22 takes place.

Wie bereits erwähnt, ist das Zahnrad-Element 25 (und auch das Übersetzungsgetriebe 27, 28, 29, 30, 31) zwecks Ein- und Auskoppelung senkrecht zur Giessrichtung (oder radial zum Giessbogen) verstellbar. Unabhängig davon kann die gesamte Sicherheitsvorrichtung 20' bzw. 20 - je nach Format des zu erzeugenden Giessstranges 3 bzw. des entsprechenden Kaltstranges - in dieser Richtung verstellt werden, vorzugsweise zusammen mit den gegenüber den ortsfesten Führungsrollen 11' bzw. 11 verstellbaren Antriebsrollen 12' bzw. 12.As already mentioned, the gear element 25 (and also the transmission gear 27, 28, 29, 30, 31) for the purpose of coupling and decoupling perpendicular to the casting direction (or radially to the casting sheet) adjustable. Independently of this, the entire safety device 20 'or 20 can be adjusted in this direction, preferably together, depending on the format of the casting strand 3 or the corresponding cold strand to be produced with respect to the stationary guide rollers 11 'and 11 adjustable drive rollers 12' and 12 respectively.

In Fig. 3 sind ferner zwei verschwenkbare Schutzklappen 41, 42 angedeutet, welche in dem in Eingriff stehenden Zustand des Zahnrad-Elementes 25 in der Offenposition veranschaulicht sind. Wenn dieses Zahnrad-Element 25 mit der Sicherheitsvorrichtung 20' zurückgezogen wird, werden diese Schutzklappen 41, 42 durch einen nicht näher gezeigten Mechanismus gegen den Strang geschwenkt und sie dienen sodann als geschlossenes Hitzeschild des Getriebes in dieser Sicherheitsvorrichtung.In Fig. 3 Furthermore, two pivotable protective flaps 41, 42 are indicated, which are illustrated in the engaged state of the gear element 25 in the open position. When this gear member 25 is retracted with the safety device 20 ', these protective flaps 41, 42 are pivoted by a mechanism not shown in detail against the strand and they then serve as a closed heat shield of the transmission in this safety device.

Claims (10)

Vorrichtung zum Angiessen einer Stranggiessanlage, die eine Kokille (2) sowie eine Antriebs- und Führungsrollen (11, 12; 11', 12') umfassende Strangführung (10; 10') aufweist, mit einem über die Strangführung (10; 10') in die Kokille (2) einführbaren und von dieser abziehbaren Kaltstrang (22), dadurch gekennzeichnet, dass
eine Sicherheitsvorrichtung (20; 20') für den Kaltstrang (22) vorgesehen ist, die ein mit dem Kaltstrang (22) in einen formschlüssigen Eingriff bringbares und die Geschwindigkeit des Kaltstranges (22) begrenzendes Element (25) aufweist.Device for casting a continuous casting installation, comprising a mold (10, 10 ') comprising a mold (2) and a drive and guide roller (11, 12; 11', 12 '), with a strand guide (10, 10') into the mold (2) insertable and removable from this cold leg (22), characterized in that
a safety device (20; 20 ') is provided for the cold strand (22), which has an element (25) which can be brought into positive engagement with the cold strand (22) and limits the speed of the cold strand (22). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass beim Abführen des Kaltstranges (22) das Element (25) vom oberen Ende des Kaltstranges (22) automatisch wegkoppelbar bzw. aus dem Eingriff mit dem Kaltstrang (22) bringbar ist.Apparatus according to claim 1, characterized in that during the removal of the cold strand (22), the element (25) from the upper end of the cold strand (22) is automatically coupled away or out of engagement with the cold strand (22) can be brought. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Element (25) als ein Zahnrad ausgebildet ist, das in der Art eines Triebstock- oder Zahnradantriebes mit dem Kaltstrang (22) wirkverbindbar ist, und das zum Ausüben einer Bremskraft (eines Drehwiderstandes) beim Überschreiten einer vorbestimmten, über die Antriebsrollen (12; 12') dem Kaltstrang (22) erteilten Geschwindigkeit vorgesehen ist.Apparatus according to claim 1 or 2, characterized in that the element (25) is designed as a toothed wheel, which is operatively connected in the manner of a Triebstock- or gear drive with the dummy bar (22), and for applying a braking force (a rotational resistance) when a predetermined, over the drive rollers (12, 12 ') the cold strand (22) given speed is provided. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Sicherheitsvorrichtung (20; 20') ein autonomes, hydraulisches Kreislaufsystem mit einer mit dem Zahnrad-Element (25) wirkverbundenen Pumpe und mit einer Drossel umfasst, wobei beim rutschbedingten GeschwindigkeitsÜberschreiten des Kaltstranges (22) der Drehwiderstand des Zahnrad-Elementes (25) über das Kreislaufsystem und ein Übersetzungsgetriebe (27, 28, 29, 30, 31) erhöhbar ist.Device according to claim 3, characterized in that the safety device (20; 20 ') comprises an autonomous hydraulic circulatory system with a pump operatively connected to the gear element (25) and with a throttle, wherein, when the cold strand (22) slides beyond the slip speed Rotary resistance of the gear element (25) via the circulation system and a transmission gear (27, 28, 29, 30, 31) can be increased. Vorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass das Zahnrad-Element (25) mit einem Kettenkaltstrang in Eingriff bringbar ist, der in einer bogenförmigen Strangführung (10) geführt ist.Apparatus according to claim 3 or 4, characterized in that the gear element (25) is engageable with a chain cold strand, which is guided in an arcuate strand guide (10). Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die bogenförmige Strangführung (10) ortsfest angeordnete Führungsrollen (11) auf ihrer Aussenseite und radial zum Giessbogen einstellbare Antriebsrollen (12) auf ihrer Innenseite aufweist, wobei die Sicherheitsvorrichtung (20) auf der Innenseite der Strangführung (10) angeordnet und das Zahnrad-Element (25) radial zum Giessbogen mit dem Kettenkaltstrang in Eingriff bringbar ist.Apparatus according to claim 5, characterized in that the arcuate strand guide (10) fixedly arranged guide rollers (11) on its outer side and radially adjustable to Giessbogen drive rollers (12) on its inside, wherein the safety device (20) arranged on the inside of the strand guide (10) and the gear element (25) is engageable radially to the casting sheet with the chain cold strand. Vorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass das Zahnrad-Element (25) mit einer Verzahnung (26) eines starren Kaltstranges (22) in Eingriff bringbar ist, der in einer vertikalen Strangführung (10') geführt ist.Apparatus according to claim 3 or 4, characterized in that the gear element (25) with a toothing (26) of a rigid cold strand (22) is engageable, which is guided in a vertical strand guide (10 '). Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass die vertikale Strangführung (10') zu einer Seite ortsfest angeordnete Führungsrollen (11') und zu der anderen Seite senkrecht zur Giessrichtung einstellbare Antriebsrollen (12') aufweist, wobei das Zahnrad-Element (25) von der gleichen Seite wie die Antriebsrollen (12') in Eingriff mit der Verzahnung (26) bringbar ist.Apparatus according to claim 7, characterized in that the vertical strand guide (10 ') to one side fixedly arranged guide rollers (11') and to the other side perpendicular to the casting direction adjustable drive rollers (12 '), wherein the gear element (25) from the same side as the drive rollers (12 ') in engagement with the toothing (26) can be brought. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass zur Ein- und Auskopplung des Elementes (25) ein steuerbares Kniehebelsystem vorhanden ist.Device according to one of claims 1 to 8, characterized in that for coupling and decoupling of the element (25) a controllable toggle lever system is present. Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Sicherheitsvorrichtung (20; 20') je nach Format des zu erzeugenden Giessstranges (3) bzw. des entsprechenden Kaltstranges (22) zusammen mit den Antriebsrollen (12; 12') relativ zur durch die ortsfesten Führungsrollen (11; 11') definierten Strangführung (10; 10') einstellbar ist.Device according to one of claims 1 to 9, characterized in that the safety device (20; 20 '), depending on the format of the casting strand (3) or the corresponding cold strand (22) to be produced together with the drive rollers (12; is adjustable for the strand guide (10, 10 ') defined by the stationary guide rollers (11, 11').
EP09015739.7A 2009-12-18 2009-12-18 Device for starting/casting of a strand casting assembly Active EP2335847B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP09015739.7A EP2335847B1 (en) 2009-12-18 2009-12-18 Device for starting/casting of a strand casting assembly
US12/963,696 US8267150B2 (en) 2009-12-18 2010-12-09 Apparatus for starting the casting of a continuous casting system
KR1020100127315A KR20110070791A (en) 2009-12-18 2010-12-14 Apparatus for starting the casting of a continuous casting system
CN201010593954XA CN102101161A (en) 2009-12-18 2010-12-17 Device for pouring into a strand casting assembly
RU2010151910/02A RU2010151910A (en) 2009-12-18 2010-12-17 DEVICE FOR BEGINNING CASTING IN THE CONTINUOUS CASTING SYSTEM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09015739.7A EP2335847B1 (en) 2009-12-18 2009-12-18 Device for starting/casting of a strand casting assembly

Publications (2)

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EP2335847A1 true EP2335847A1 (en) 2011-06-22
EP2335847B1 EP2335847B1 (en) 2013-04-17

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US (1) US8267150B2 (en)
EP (1) EP2335847B1 (en)
KR (1) KR20110070791A (en)
CN (1) CN102101161A (en)
RU (1) RU2010151910A (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
US8267150B2 (en) 2009-12-18 2012-09-18 Sms Concast Ag Apparatus for starting the casting of a continuous casting system

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DE2023282A1 (en) 1970-05-13 1971-11-25 Demag Ag, 4100 Duisburg Continuous casting transport device ensuring proper pulling and - alignment of the casting
DE2340844A1 (en) 1973-08-13 1975-02-27 Uss Eng & Consult Continuous casting appts mechanism - for handling and downwardly loading starter bars
DE2629453A1 (en) 1976-06-30 1978-01-05 Rokop Corp Flexible starting bar - for continuous casting apparatus, is gear-rack supported in storage position
DE3446404A1 (en) 1984-01-19 1985-08-01 Voest-Alpine Ag, Linz Continuous casting installation
FR2572315A1 (en) 1984-10-26 1986-05-02 Clecim Sa Starting-bar support device for continuous casting machine and methods of use
DE4132185A1 (en) 1991-09-27 1993-04-01 Schloemann Siemag Ag Chain guide of continuous casting machine - with correct chain track maintained by mating roll and chain elements

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DE1953094A1 (en) * 1969-10-22 1971-04-29 Schloemann Ag Safety device for continuous casting plants and methods for actuating the same
US3823763A (en) * 1972-10-19 1974-07-16 United States Steel Corp Ramp-type apparatus for disconnecting and storing a flexible starter bar
US4286649A (en) * 1980-06-16 1981-09-01 Rokop Corporation Apparatus for storing a continuous casting starting bar in elevated position
IT1208060B (en) * 1981-01-27 1989-06-06 Danieli Off Mecc STARTING DEVICE IN CONTINUOUS CASTING MACHINES.
CH679650A5 (en) * 1989-04-24 1992-03-31 Concast Standard Ag
CN2341735Y (en) * 1998-11-10 1999-10-06 刘晓东 Pina nd gear driving combined rigid dummy bar
EP2335847B1 (en) 2009-12-18 2013-04-17 SMS Concast AG Device for starting/casting of a strand casting assembly

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Publication number Priority date Publication date Assignee Title
DE2023282A1 (en) 1970-05-13 1971-11-25 Demag Ag, 4100 Duisburg Continuous casting transport device ensuring proper pulling and - alignment of the casting
DE2340844A1 (en) 1973-08-13 1975-02-27 Uss Eng & Consult Continuous casting appts mechanism - for handling and downwardly loading starter bars
DE2629453A1 (en) 1976-06-30 1978-01-05 Rokop Corp Flexible starting bar - for continuous casting apparatus, is gear-rack supported in storage position
DE3446404A1 (en) 1984-01-19 1985-08-01 Voest-Alpine Ag, Linz Continuous casting installation
FR2572315A1 (en) 1984-10-26 1986-05-02 Clecim Sa Starting-bar support device for continuous casting machine and methods of use
DE4132185A1 (en) 1991-09-27 1993-04-01 Schloemann Siemag Ag Chain guide of continuous casting machine - with correct chain track maintained by mating roll and chain elements

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8267150B2 (en) 2009-12-18 2012-09-18 Sms Concast Ag Apparatus for starting the casting of a continuous casting system

Also Published As

Publication number Publication date
US8267150B2 (en) 2012-09-18
CN102101161A (en) 2011-06-22
US20110146936A1 (en) 2011-06-23
RU2010151910A (en) 2012-06-27
EP2335847B1 (en) 2013-04-17
KR20110070791A (en) 2011-06-24

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