EP0043364B1 - Device for introducing a flexible starter bar into a continuous casting machine - Google Patents

Device for introducing a flexible starter bar into a continuous casting machine Download PDF

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Publication number
EP0043364B1
EP0043364B1 EP19810890098 EP81890098A EP0043364B1 EP 0043364 B1 EP0043364 B1 EP 0043364B1 EP 19810890098 EP19810890098 EP 19810890098 EP 81890098 A EP81890098 A EP 81890098A EP 0043364 B1 EP0043364 B1 EP 0043364B1
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EP
European Patent Office
Prior art keywords
continuous casting
starter bar
frame
arrangement according
guiding means
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP19810890098
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German (de)
French (fr)
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EP0043364A1 (en
Inventor
Aktiengesellschaft Voest-Alpine
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Voestalpine AG
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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

Definitions

  • the invention relates to a device for introducing a flexible starting strand into a continuous casting installation, in particular a steel slab continuous casting installation, with a transport carriage having a slide or roller conveyor. which the start-up line can be transported to an inlet part of the e-continuous casting system, the transport carriage carrying a conveying device for the start-up line and the slide or roller track having an arcuate end part on which a guide device is provided which supports the start-up line on opposite sides, advantageously on the outside and inside of the arch .
  • a trolley of the type described above is known for example from DE-OS 22 21 187.
  • the start-up strand is moved over the mold, threaded into the mold by means of conveying devices located on the transport carriage, and then lowered through the mold into the strand guide located underneath.
  • threading into the mold is a particular problem, since it is not possible, or only with great effort, to move the transport trolley exactly into the “threading position”.
  • Transport trolleys of the type described in the introduction have a weight of more than 50 t, even if only a short start-up line is used, to which the weight of the start-up line itself is added.
  • the invention aims at avoiding these disadvantages and difficulties and has as its object to create a device of the type described at the outset with which it is possible to bring the starting strand into the correct threading position quickly and accurately and with little effort.
  • the guide device is expediently arranged at the lower end of the curved end part and can be displaced in the direction of travel of the transport carriage.
  • the guide device has at least one stop roller which supports one side of the start-up strand and is mounted in a frame and on the opposite side of the frame has a pinch roller which is pivotably mounted against the stop roller, the frame being slidably mounted on the carriage.
  • the displacement path of the guide device is limited by means of a limit switch which is fixed in place on the continuous casting installation.
  • the guide device is provided with a funnel-shaped inlet part, the funnel-shaped inlet part expediently having a plate rigidly attached to the frame and a plate which can be pivoted together with the clamping roller.
  • Fig. 1 shows a side view (partially cut) of a transport carriage in a schematic representation
  • Fig. 2 shows a view from below in the direction of arrow II of Fig. 1.
  • the braking of the trolley in the vicinity of the mold 4 is first carried out by a limit switch, not shown, which greatly reduces the speed of the car, then by a second limit switch, also not shown, which brings the car to a standstill within a closer area of the mold.
  • the start 5 and buffer 6 are only a safety device if the limit switches fail.
  • a roller conveyor 8 is mounted for storing a starting strand 7, the rollers 9 of which are rotatably attached to brackets 10.
  • the roller conveyor 8 has an arcuate end part 11, which makes up about a quarter circle.
  • drive rollers 12 between which the starting strand 7 can be clamped, held and conveyed, are provided.
  • the drive of these drive claws 12 is not shown in detail.
  • a guide device is provided, which is generally designated 13.
  • This guide device has a frame 16 which can be displaced in the longitudinal direction 14 of the carriage by means of a pressure medium cylinder 15. In order to enable the frame 16 to slide easily, it can be moved by means of rollers 17 in side members 18 arranged on the transport carriage 1.
  • two superimposed stop rollers 19 are rotatably mounted.
  • a pinch roller 20 Opposed to these rollers is a pinch roller 20 which is rotatably mounted on a lever 21, which lever on the frame 16 ver about an axis 22 is pivotable.
  • a further pressure medium cylinder 23 which is articulated on the frame 16 serves to pivot the lever.
  • Sheet metal plates 24 are provided at the front end of the frame above the two rollers and between the two rollers.
  • the lever 21 of the pivotally mounted pinch roller 20 has an upwardly extended extension 25, to which a sheet metal plate 26 is also attached.
  • the function of the device is as follows: First, the trolley runs against a limit switch, not shown, which greatly reduces the driving speed, then against a second limit switch, causing it to stop when its guide device 13 is approximately above the mold 4. Then, by actuating the pressure medium cylinder 23, the pinch roller 20 mounted on the lever 21 is moved to the opposite stop 19, so that the starting strand 7 is gripped and held with its foot end 27 to be threaded into the mold 4. Then, by actuating the pressure medium cylinder 15, the frame 16 is displaced until the stop rollers 19 are brought into position exactly above the mold side wall 28 assigned to them. Then the starting strand 7 can be threaded into the mold by means of the drive rollers 12 and further lowered.
  • both the carriage 1 and the guide device 13 are fixed in their position.
  • the displacement of the guide device 13 is expediently stopped by a limit switch 29 fixedly attached to the continuous casting installation, for example on the mold 4.
  • the limit switch system can function without contact (electrical, optical) or mechanically.
  • the transport trolley can serve to introduce the start-up strand not into the mold, but into a threading point of the strand guide below the mold.
  • the advantage of the device according to the invention can be seen in the fact that only relatively small masses have to be moved when centering the starting strand 7. These are only the guide device 13 and the foot end 27 of the starting line.

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

Description

Die Erfindung betrifft eine Einrichtung zum Einbringen eines flexiblen Anfahrstranges in eine Stranggießanlage, insbesondere Stahlbrammen-Stranggießanlage, mit einem eine Gleit- oder Rollenbahn aufweisenden Transportwagen, mit . dem der Anfahrstrang zu einem Einlaufteil der eStranggießanlage transportierbar ist, wobei der Transportwagen eine Fördereinrichtung für den Anfahrstrang trägt und die Gleit- oder Rollenbahn einen bogenförmigen Endteil aufweist, an dem eine den Anfahrstrang an gegenüberliegenden Seiten, vorteilhaft bogenaußen- und -innenseitig stützende Führungseinrichtung vorgesehen ist.The invention relates to a device for introducing a flexible starting strand into a continuous casting installation, in particular a steel slab continuous casting installation, with a transport carriage having a slide or roller conveyor. which the start-up line can be transported to an inlet part of the e-continuous casting system, the transport carriage carrying a conveying device for the start-up line and the slide or roller track having an arcuate end part on which a guide device is provided which supports the start-up line on opposite sides, advantageously on the outside and inside of the arch .

Ein Transportwagen der eingangs beschriebenen Art ist beispielsweise aus der DE-OS 22 21 187 bekannt. Mit diesen bekannten Transportwagen wird der Anfahrstrang bis über die Kokille verfahren, mittels am Transportwagen befindlicher Fördereinrichtungen in die Kokille eingefädelt und sodann durch die Kokille hindurch in die darunter befindliche Strangführung abgesenkt. Bei diesem Vorgang stellt das Einfädeln in die Kokille ein besonderes Problem dar, da es nicht bzw. nur mit sehr hohem Aufwand möglich ist, den Transportwagen genau in die « Einfädelposition » zu verfahren. Transportwagen der eingangs beschriebenen Art weisen, selbst wenn nur ein kurzer Anfahrstrang verwendet wird, ein Gewicht von mehr als 50 t auf, wozu noch das Gewicht des Anfahrstranges selbst kommt. Das Abbremsen einer derartigen großen Masse gelingt nicht mit der erforderlichen Präzision - hier kommt es auf mm an -, sodaß man bisher gezwungen war, den Wagen nach dem Abbremsen bei der Kokille noch hin bzw. her zu verschieben, bis das in die Kokille einzufädelnde Ende des Anfahrstranges tatsächlich genau über der Kokille zu liegen kommt. Dieses « Nachzentrieren » nach erfolgtem Abbremsen des Wagens erfordert nicht nur Zeit, sondern auch Geschicklichkeit, da dabei ebenfalls das Gesamtgewicht des Transportwagens mit dem Anfahrstrang zu bewegen ist.A trolley of the type described above is known for example from DE-OS 22 21 187. With these known transport carriages, the start-up strand is moved over the mold, threaded into the mold by means of conveying devices located on the transport carriage, and then lowered through the mold into the strand guide located underneath. In this process, threading into the mold is a particular problem, since it is not possible, or only with great effort, to move the transport trolley exactly into the “threading position”. Transport trolleys of the type described in the introduction have a weight of more than 50 t, even if only a short start-up line is used, to which the weight of the start-up line itself is added. The braking of such a large mass does not succeed with the required precision - here it depends on mm - so that it was previously forced to move the carriage back and forth after braking with the mold until the end to be threaded into the mold of the start-up line actually comes to lie exactly over the mold. This “re-centering” after the car has braked not only requires time, but also skill, since the total weight of the trolley can also be moved with the starting strand.

Die Erfindung bezweckt die Vermeidung dieser Nachteile und Schwierigkeiten und stellt sich die Aufgabe, eine Einrichtung der eingangs beschriebenen Art zu schaffen, mit der es möglich ist, den Anfahrstrang schnell und genau und mit geringem Aufwand in die richtige Einfädelposition zu bringen.The invention aims at avoiding these disadvantages and difficulties and has as its object to create a device of the type described at the outset with which it is possible to bring the starting strand into the correct threading position quickly and accurately and with little effort.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Führungseinrichtung in Längsrichtung des Transportwagens verschieb- und feststellbar gelagert ist.This object is achieved in that the guide device is mounted displaceably and lockably in the longitudinal direction of the transport carriage.

Zweckmäßig ist die Führungseinrichtung am unteren Ende des bogenförmigen Endteiles angeordnet und in Fahrrichtung des Transportwagens verschiebbar.The guide device is expediently arranged at the lower end of the curved end part and can be displaced in the direction of travel of the transport carriage.

Nach einer bevorzugten Ausführungsform weist die Führungseinrichtung mindestens eine eine Seite des Anfahrstranges stützende, in einem Rahmen gelagerte Anschlagrolle und an der gegenüberliegenden Seite des Rahmens eine gegen die Anschlagrolle schwenkbar gelagerte Klemmrolle auf, wobei der Rahmen am Wagen verschiebbar gelagert ist. Dadurch wird ein sicheres Erfassen und spielfreies Bewegen des einzufädelnden Endes des Anfahrstranges ermöglicht.According to a preferred embodiment, the guide device has at least one stop roller which supports one side of the start-up strand and is mounted in a frame and on the opposite side of the frame has a pinch roller which is pivotably mounted against the stop roller, the frame being slidably mounted on the carriage. This enables safe detection and play-free movement of the end of the starting strand to be threaded.

Um ein selbsttätiges Zentrieren zu ermöglichen, ist der Verschiebeweg der Führungseinrichtung mittels eines ortsfest an der Stranggießanlage montierten Endschalters begrenzt.In order to enable automatic centering, the displacement path of the guide device is limited by means of a limit switch which is fixed in place on the continuous casting installation.

Zur leichteren Manipulation des einzufädelnden Endes des Anfahrstranges ist die Führungseinrichtung mit einem trichterförmigen Einlaufteil versehen, wobei zweckmäßig der trichterförmige Einlaufteil eine am Rahmen starr befestigte Platte und eine mit der Klemmrolle gemeinsam verschwenkbare Platte aufweist.For easier manipulation of the end of the starting strand to be threaded, the guide device is provided with a funnel-shaped inlet part, the funnel-shaped inlet part expediently having a plate rigidly attached to the frame and a plate which can be pivoted together with the clamping roller.

Die Erfindung ist nachfolgend anhand der Zeichnungen näher erläutert, wobei Fig. 1 eine Seitenansicht (teilweise geschnitten) eines Transportwagens in schematischer Darstellung und Fig. 2 eine Ansicht von unten in Richtung des Pfeiles II der Fig. 1 zeigen.The invention is explained in more detail below with reference to the drawings, in which Fig. 1 shows a side view (partially cut) of a transport carriage in a schematic representation and Fig. 2 shows a view from below in the direction of arrow II of Fig. 1.

Der als Fachwerkkonstruktion ausgebildete Transportwagen 1 ist mittels Räder 2 auf Schienen 3 zur Kokille 4 hin und von der Kokille weg verfahrbar. Das Abbremsen des Transportwagens in der Nähe der Kokille 4 erfolgt zuerst durch einen nicht dargestellten Endschalter, welcher die Fahrgeschwindigkeit des Wagens stark herabsetzt, dann durch einen zweiten ebenfalls nicht dargestellten Endschalter, welcher den Wagen innerhalb eines näheren Bereiches der Kokille zum Stillstand bringt. Der Ansch!ag 5 und Puffer 6 sind nur eine Sicherheitseinrichtung, falls die Endschalter versagen. An der Oberseite des Wagens 1 ist zur Ablage eines Anfahrstranges 7 eine Rollenbahn 8 montiert, deren Rollen 9 an Konsolen 10 drehbar befestigt sind. Die Rollenbahn 8 weist einen bogenförmigen Endteil 11 auf, der etwa einen Viertelkreis ausmacht. Zu Beginn der Rollenbahn 8 und am bogenförmigen Endteil 11 der Rollenbahn 8 sind Treibrollen 12, zwischen denen der Anfahrstrang 7 geklemmt, gehalten und gefördert werden kann, vorgesehen. Der Antrieb dieser Treibrallen 12 ist nicht näher dargestellt.The trolley 1, which is designed as a truss structure, can be moved by wheels 2 on rails 3 to the mold 4 and away from the mold. The braking of the trolley in the vicinity of the mold 4 is first carried out by a limit switch, not shown, which greatly reduces the speed of the car, then by a second limit switch, also not shown, which brings the car to a standstill within a closer area of the mold. The start 5 and buffer 6 are only a safety device if the limit switches fail. On the top of the carriage 1, a roller conveyor 8 is mounted for storing a starting strand 7, the rollers 9 of which are rotatably attached to brackets 10. The roller conveyor 8 has an arcuate end part 11, which makes up about a quarter circle. At the beginning of the roller conveyor 8 and at the arcuate end part 11 of the roller conveyor 8, drive rollers 12, between which the starting strand 7 can be clamped, held and conveyed, are provided. The drive of these drive claws 12 is not shown in detail.

Am unteren Ende des bogenförmigen Endteiles 11 der Rollenbahn 8 ist eine Führungseinrichtung vorgesehen, die generell mit 13 bezeichnet ist. Diese Führungseinrichtung weist einen in Längsrichtung 14 des Wagens mittels eines Druckmittelzylinders 15 verschiebbaren Rahmen 16 auf. Um ein leichtes Gleiten des Rahmens 16 zu ermöglichen, ist dieser mittels Rollen 17 in am Transportwagen 1 angeordneten Längsträgern 18 fahrbar. Am vorderen Ende des Rahmens sind zwei übereinander angeordnete Anschlagrollen 19 drehbar gelagert. Diesen Rollen gegenüberliegend ist eine Klemmrolle 20 vorgesehen, die an einem Hebel 21 drehbar gelagert ist, welcher Hebel am Rahmen 16 um eine Achse 22 verschwenkbar ist. Zum Schwenken des Hebels dient ein weiterer am Rahmen 16 angelenkter Druckmittelzylinder 23. Am vorderen Ende des Rahmens sind oberhalb der beiden Rollen und zwischen den beiden Rollen Blechplatten 24 vorgesehen. Der Hebel 21 der verschwenkbar gelagerten Klemmrolle 20 weist einen nach oben verlängerten Ansatz 25 auf, an dem ebenfalls eine Blechplatte 26 befestigt ist.At the lower end of the arcuate end part 11 of the roller conveyor 8, a guide device is provided, which is generally designated 13. This guide device has a frame 16 which can be displaced in the longitudinal direction 14 of the carriage by means of a pressure medium cylinder 15. In order to enable the frame 16 to slide easily, it can be moved by means of rollers 17 in side members 18 arranged on the transport carriage 1. At the front end of the frame, two superimposed stop rollers 19 are rotatably mounted. Opposed to these rollers is a pinch roller 20 which is rotatably mounted on a lever 21, which lever on the frame 16 ver about an axis 22 is pivotable. A further pressure medium cylinder 23 which is articulated on the frame 16 serves to pivot the lever. Sheet metal plates 24 are provided at the front end of the frame above the two rollers and between the two rollers. The lever 21 of the pivotally mounted pinch roller 20 has an upwardly extended extension 25, to which a sheet metal plate 26 is also attached.

Die Funktion der Einrichtung ist folgende : Zunächst fährt der Transportwagen gegen einen nicht dargestellten Endschalter, welcher die Fahrgeschwindigkeit stark herabsetzt, dann gegen einen zweiten Endschalter, wodurch er zum Stehen kommt, wenn sich seine Führungseinrichtung 13 ungefähr oberhalb der Kokille 4 befindet. Anschließend wird durch Betätigung des Druckmittelzylinders 23 die an dem Hebel 21 gelagerte Klemmrolle 20 zu den gegenüberliegenden Anschlag rollen 19 bewegt, sodaß der Anfahrstrang 7 mit seinem in die Kokille 4 einzufädelnden Fußende 27 erfaßt und gehalten wird. Sodann wird durch Betätigung des Druckmittelzylinders 15 der Rahmen 16 so weit verschoben, bis die Anschlagrollen 19 genau fluchtend oberhalb der ihnen zugeordneten Kokillenseitenwand 28 in Stellung gebracht sind. Sodann kann der Anfahrstrang 7 mittels der Treibrollen 12 in die Kokille eingefädelt und weiter abgesenkt werden. Während des Absenkens sind sowohl der Wagen 1 als auch die Führungseinrichtung 13 in ihrer Stellung fixiert. Das Verschieben der Führungseinrichtung 13 wird zweckmäßig durch einen ortsfest an der Stranggießanlage, beispielsweise an der Kokille 4 befestigten Endschalter 29 gestoppt. Das Endschaltersystem kann berührungslos (elektrisch, optisch) oder mechanisch funktionieren.The function of the device is as follows: First, the trolley runs against a limit switch, not shown, which greatly reduces the driving speed, then against a second limit switch, causing it to stop when its guide device 13 is approximately above the mold 4. Then, by actuating the pressure medium cylinder 23, the pinch roller 20 mounted on the lever 21 is moved to the opposite stop 19, so that the starting strand 7 is gripped and held with its foot end 27 to be threaded into the mold 4. Then, by actuating the pressure medium cylinder 15, the frame 16 is displaced until the stop rollers 19 are brought into position exactly above the mold side wall 28 assigned to them. Then the starting strand 7 can be threaded into the mold by means of the drive rollers 12 and further lowered. During the lowering, both the carriage 1 and the guide device 13 are fixed in their position. The displacement of the guide device 13 is expediently stopped by a limit switch 29 fixedly attached to the continuous casting installation, for example on the mold 4. The limit switch system can function without contact (electrical, optical) or mechanically.

Die Erfindung beschränkt sich nicht auf das in der Zeichnung dargestellte Ausführungsbeispiel, sondern sie kann in verschiedener Hinsicht modifiziert sein. So kann beispielsweise der Transportwagen dazu dienen, den Anfahrstrang nicht in die Kokille, sondern in eine unterhalb der Kokille liegende Einfädelstelle der Strangführung einzubringen.The invention is not limited to the embodiment shown in the drawing, but it can be modified in various ways. For example, the transport trolley can serve to introduce the start-up strand not into the mold, but into a threading point of the strand guide below the mold.

Der Vorteil der erfindungsgemäßen Einrichtung ist darin zu sehen, daß nur verhältnismäßig geringe Massen beim Zentrieren des Anfahrstranges 7 bewegt werden müssen. Es sind dies lediglich die Führungseinrichtung 13 sowie das Fußende 27 des Anfahrstranges.The advantage of the device according to the invention can be seen in the fact that only relatively small masses have to be moved when centering the starting strand 7. These are only the guide device 13 and the foot end 27 of the starting line.

Claims (6)

1. Arrangement for introducing a flexible starter bar (7) into a continuous casting plant, in particular a steel-slab continuous casting plant, comprising a transporting car (1) including a slide or roller way (8), by which the starter bar is transportable to an introduction part (4) of the continuous casting plant, the transporting car carrying a conveying means (12) for the starter bar and the slide or roller way including an arcuate end section (11) on which a guiding means (13) supporting the starter bar on opposite sides, advantageously on the arc outer and inner sides is provided, characterised in that the guid- . ing means (13) is mounted so as to be displaceable and fixable in the longitudinal direction (14) of the transporting car (1).
2. Arrangement according to claim 1, characterised in that the guiding means (13) is arranged on the lower end of the arcuate end section (11) and is displaceable in the moving direction of the transporting car (1).
3. Arrangement according to claims 1 or 2, characterised in that the guiding means (13) comprises at least one stop roll (19) supporting a side of the starter bar (7) and journalled in a frame (16), and a pinch roll (20) journalled on the opposite side of the frame (16) so as to be pivotable towards the stop roll (19), and that the frame (16) is displaceably mounted on the car (1).
4. Arrangement according to claims 1 to 3, characterised in that the displacement path of the guiding means (13) is delimited by means of a limit switch (29) stationarily mounted on the continuous casting plant.
5. Arrangement according to claims 1 to 4, characterised in that the guiding means (13) is provided with a funnel-shaped introduction part (24, 26).
6. Arrangement according to claim 5, characterised in that the funnel-shaped introduction part comprises a plate (24) rigidly fastened to the frame (16) and a plate (26) commonly pivotable with the pinch roll (20).
EP19810890098 1980-06-30 1981-06-12 Device for introducing a flexible starter bar into a continuous casting machine Expired EP0043364B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT341180A AT366303B (en) 1980-06-30 1980-06-30 DEVICE FOR PLACING A FLEXIBLE STARTING LINE IN A CONTINUOUS CASTING SYSTEM
AT3411/80 1980-06-30

Publications (2)

Publication Number Publication Date
EP0043364A1 EP0043364A1 (en) 1982-01-06
EP0043364B1 true EP0043364B1 (en) 1984-02-29

Family

ID=3550132

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810890098 Expired EP0043364B1 (en) 1980-06-30 1981-06-12 Device for introducing a flexible starter bar into a continuous casting machine

Country Status (4)

Country Link
EP (1) EP0043364B1 (en)
JP (1) JPS5744457A (en)
AT (1) AT366303B (en)
DE (1) DE3162425D1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT408075B (en) * 1999-12-22 2001-08-27 Voest Alpine Ind Anlagen ACCESS STRAND TRANSPORT CARRIAGE

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH525049A (en) * 1971-02-25 1972-07-15 Concast Ag Method and device for moving the starting strand into a mold during continuous casting
DE2221187C3 (en) * 1972-04-29 1981-06-11 Schloemann-Siemag AG, 4000 Düsseldorf Trolley for temporary storage and for introducing a starting strand from above into the strand guide of a continuous caster
ES453766A1 (en) * 1976-02-26 1977-11-01 Voest Alpine Montan Ag Arrangement for introducing a flexible starter bar into a continuous casting plant
AT343835B (en) * 1976-03-23 1978-06-26 Voest Ag DEVICE FOR INSTALLING A FLEXIBLE STARTING LINE WITH A STARTING HEAD INTO A CONTINUOUS CASTING PLANT

Also Published As

Publication number Publication date
AT366303B (en) 1982-04-13
DE3162425D1 (en) 1984-04-05
ATA341180A (en) 1981-08-15
EP0043364A1 (en) 1982-01-06
JPS5744457A (en) 1982-03-12

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