EP0417504B1 - Continuous casting mould - Google Patents

Continuous casting mould Download PDF

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Publication number
EP0417504B1
EP0417504B1 EP90115910A EP90115910A EP0417504B1 EP 0417504 B1 EP0417504 B1 EP 0417504B1 EP 90115910 A EP90115910 A EP 90115910A EP 90115910 A EP90115910 A EP 90115910A EP 0417504 B1 EP0417504 B1 EP 0417504B1
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EP
European Patent Office
Prior art keywords
side walls
continuous casting
narrow
broad
support frames
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.)
Expired - Lifetime
Application number
EP90115910A
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German (de)
French (fr)
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EP0417504A2 (en
EP0417504A3 (en
Inventor
Josef Deussen
Dieter Böttger
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SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag AG
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Publication of EP0417504A2 publication Critical patent/EP0417504A2/en
Publication of EP0417504A3 publication Critical patent/EP0417504A3/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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds

Definitions

  • the invention relates to a continuous casting mold with two broad side walls arranged opposite one another on supporting frames, between which narrow side walls which can be displaced relative to one another for the purpose of setting the format width are firmly clamped and means for adjusting the wide sides are associated with the supporting frame, the supporting frame having mechanical clamping means for bracing the narrow side walls located between the wide side walls. which are operatively connected to hydraulic piston-cylinder units.
  • This configuration of the continuous steel casting mold makes it easy to obtain an accurate Adjustment of the contact pressure and increased operational safety against opening of the broad side wall when casting is achieved.
  • the broad side walls are usually arranged parallel to one another in order to keep the adjustment path for the one support frame as small as possible.
  • the object of the invention is to improve the above-mentioned prior art with regard to the function of the adjusting means and tensioning elements and their maintenance, in particular in such a way that an adjustment of the wide side walls with an enlarged adjustment path and thereby better accessibility and easier expansion is made possible.
  • Continuous casting molds with a funnel-shaped cross section of the broad side walls should also be designed so that they enable adjustment on both sides, for. B. in a breakthrough that requires a larger adjustment.
  • the Support frames of the continuous casting mold with their wide side walls are spread apart from one another to such an extent that the narrow side walls arranged on the support plates are accessible from both sides, can be removed very easily together with the support plates and can be renewed if necessary.
  • the cleaning of the continuous casting mold in the narrow side areas as well as the maintenance of the continuous casting mold as a whole is thereby considerably simplified and facilitated.
  • the support frames with their broad side walls are very advantageously arranged in the continuous casting mold and connected to the tensioning elements in such a way that they can be spread by about 70 mm on each side.
  • the end of the strand in the area of the mold can be exposed and the mold can be easily removed.
  • the mold can very easily be lifted upwards above the funnel-shaped strand end that solidifies in the mold.
  • the support frames are arranged with their wide side walls in the continuous casting mold and connected to the tensioning elements in such a way that they can be adjusted both to one another and from one another.
  • the means required for this consist of resilient tie rods that connect the two support frames with their broad side walls. From these spring-elastic tie rods, the clamping forces occurring during the casting process of the metal strand are fully taken over, so that the installation of disc spring assemblies is not necessary.
  • the resilient tie rods are very advantageously provided at one end with a keyway, into which wedges are inserted as tensioning elements when the narrow side walls are clamped, which have push rods and a swivel bearing provided with a joint is operatively connected to a hydraulic piston-cylinder unit, can be actuated.
  • This embodiment of the invention enables a hydraulic piston-cylinder unit in a simple manner a non-positive clamping and thus a sufficiently firm clamping and locking of the narrow side walls between the broad side walls via both spring-elastic tie rods at the same time.
  • the measure also helps that the support frames are provided with guide rails and these are slidably guided on guide pieces. This ensures that the support frame, in particular on the fixed side, with its wide side walls after opening (spreading) in turn assume exactly the original position and therefore there is no need to subsequently align the centering stones.
  • the narrow side parts which carry the narrow side walls and are designed as water tensioning plates are arranged in an unadjustable manner and are firmly connected to the mold lifting table. This avoids moving on the sealing rings of the water clamping plate and time-consuming hose assembly when installing and removing the continuous casting mold.
  • the continuous casting mold consists of a support frame (1) for the loose side and a support frame (2) for the fixed side as well as the narrow side parts (3) and the support plates (4).
  • the broad side walls (9) are arranged on the inside of the support frames (1) and (2) and the narrow side walls (5) are arranged on the support plates (4).
  • Both the broad side walls (9) and the narrow side walls (5) are designed as copper plates and are not shown in more detail with the support frames (1, 2) or with the support plates (4) in the drawing figures shown screws releasably connected.
  • the continuous casting mold is provided on both sides with a narrow side adjustment device (6) (to be seen in section on the left in FIG. 1).
  • each resilient tie rod (7) is provided at one end with a keyway (7 ') into which the wedge (8) is inserted between the broad side walls (9) when the narrow side walls (5) are clamped, by means of a hydraulic piston Cylinder unit (10), which, as shown in particular in FIGS. 4 and 5, is operatively connected to the wedge (8) or wedge (8) via a swivel bearing (11) and push rods (13).
  • the contact pressure of the broad side walls (9) on the narrow side walls (5) required here can be set very easily and precisely by the pressure acting on the tensioning element (wedge 8) from the hydraulic cylinder of the hydraulic piston-cylinder unit (10).
  • the pivot bearing (11), as shown in FIG. 1, is screwed onto the piston rod (11 ') of the hydraulic cylinder of the piston-cylinder unit (10), which simplifies and simplifies the assembly and disassembly of the piston-cylinder unit (10).
  • This pivot bearing (11), which is detachably connected to the piston rod (11 ') of the piston-cylinder unit (10), is in turn connected to the two push rods (13) via a bolt (12) and, on the other hand, to the as wedges (8). trained clamping elements in connection.
  • a bushing (15) arranged in a bearing body (14) serves to guide the wedges (8).
  • the bearing body (14) itself is welded to the support frame (1) on the loose side.
  • the resilient tie rods (7) are firmly screwed to the support frame (2) at their collar (16 ').
  • the keyways (7 ') arranged on the tie rods (7) are firmly screwed to the support frame (2) at their collar (16 ').
  • two hydraulic cylinders (28) are screwed between the tie rods (7) on the support frame (1, 2) on the fixed and loose side. This requires previously disengaging the wedges (8) serving as tensioning elements with the aid of the hydraulic piston-cylinder unit (10) into the unlocked position shown in FIG. 5.
  • the wide side walls (9) of the support frames (1, 2) can then be moved very advantageously relative to the narrow side walls (5) by about 70 mm to the open position shown in FIG. 3 on each side. Otherwise, the hydraulic cylinders (28) relieve the narrow side walls (5) when the format width changes. In this in Fig.
  • the continuous casting mold can be very easily conveyed out after a breakthrough or overflow over the casting strand end in the area of the mold. Due to the large opening width of the mold, the end of the strand is also exposed in the region of the sprue not shown in the drawing.
  • the cleaning and maintenance of the narrow and wide side walls (5, 9) and the replacement of the narrow side support plates (4) is also considerably simplified and facilitated by the adjustment device on the continuous casting mold designed according to the invention.
  • the adjustment and bracing device according to the invention can also be used in conventional molds with parallel broad side walls.
  • the opening width of the mold can also be made smaller, ie less than 70 mm.
  • the hydraulic cylinders (28) on the loose side relieve the narrow side walls (5). This results in a further pre-tensioning of the spring-elastic pull rod (7).
  • the support plates (4) can also be replaced during a casting break.
  • the two supporting frames (1, 2) carrying the broad side walls (9) are each provided with two guide rails (17) which are guided in guide pieces (18) and are centered in height.
  • the two narrow side parts (3) have different centering stones (19, 20) for the fixed or loose side.
  • the centering stones (19, 20) are aligned using set screws (21).
  • the contact surfaces of the narrow side parts (3) are very advantageously designed as water tensioning plates.
  • the cooling water passes from the mold lifting device, not shown in the drawing, via the water tensioning plate, pipes (22) and compensators (23) to the wide side walls (9) as well as via pipes (24), hoses (25) and the narrow wall side support (26) Narrow side walls (5).
  • the guide column of the narrow side part (3) serves to accommodate the narrow side adjustment unit (6), as a contact surface for the fixed side support frame (2), for guiding the tie rods (7) and for fastening the swivel bearing (27).
  • the loose side support frame (1) carrying the broad side wall can optionally also be braced against the narrow side walls (5) with four plate spring assemblies.
  • the fixed side support frame (2) is clamped against the narrow side part with a pull rod, a spacer ring is inserted between the central part and the fixed side support frame, which determines the position of the fixed side for centering.
  • the hollow piston cylinder is used to open the loose side pressurized until the disc springs no longer transmit tensile force to the pull rod. Then the tabs on the narrow side part are lifted off and the locking bolt is turned into the open position. The fixed and loose side support frames are then moved outwards with the hydraulic cylinders. The closing process takes place in reverse order.
  • the pull rod can also be designed very advantageously as an elastic expansion element, so that disc spring assemblies and hollow piston cylinders are omitted.
  • the fixed side is pulled against the narrow side part with two double-acting piston cylinders.
  • the loose side is also pulled against the narrow side walls with two double-acting piston cylinders.
  • Tie rods, disc springs and hollow piston cylinders are not used in this variant.
  • the forces in the mold during casting are absorbed and compensated by the hydraulic cylinders.
  • the opening and closing of the mold as well as the relieving of the narrow side walls when changing the format width of the casting strand is also carried out with the help of the hydraulic cylinders.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Crushing And Grinding (AREA)
  • Valve Housings (AREA)
  • Braking Arrangements (AREA)
  • Mold Materials And Core Materials (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Materials For Medical Uses (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

In the case of continuous casting moulds with two broad-side walls, which are arranged opposite one another on supporting frames in such a way that their shape gives a funnel-shaped free space and between which narrow-side walls adjustable relative to one another for the purpose of adjusting the format width are firmly clamped, mechanical clamping elements in operative connection with hydraulic cylinders being provided for clamping the narrow-side walls, the disassembly of the entire mould after a break-out or overflow and the cleaning of the narrow- and broad-side walls is relatively difficult due to the small opening width of the broad-side walls. This is particularly true for the maintenance of the mould and for the installation and removal of the narrow- and broad-side walls with their supporting elements. These difficulties are eliminated in a simple manner according to the invention by virtue of the fact that the supporting frames (1, 2) with their broad-side walls (9) are arranged in such a way in the continuous casting mould and connected in such a way to the clamping elements (7, 8) that they can be adjusted both towards one another and away from one another. In this way, it is possible for the supporting frames with their broad-side walls to be spread apart to such an extent that they are accessible from both sides, especially in the region of the narrow-side walls and can be cleaned, maintained and exchanged very easily. In particular, following a break-out or overflow the complete mould can be lifted away upwards over the funnel-shaped strand end solidified in the mould. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Stranggießkokille mit zwei auf Stützrahmen gegenüberliegend angeordneten Breitseitenwänden, zwischen denen zwecks Formatbreiteneinstellung gegeneinander verschiebbare Schmalseitenwände fest eingeklemmt und dem Stützrahmen Mittel zur Verstellung der Breitseiten zugeordnet sind, wobei zur Verspannung der zwischen den Breitseitenwänden befindlichen Schmalseitenwände der Stützrahmen mechanische Spannmittel aufweist, die mit hydraulischen Kolben-Zylindereinheiten in Wirkverbindung stehen.The invention relates to a continuous casting mold with two broad side walls arranged opposite one another on supporting frames, between which narrow side walls which can be displaced relative to one another for the purpose of setting the format width are firmly clamped and means for adjusting the wide sides are associated with the supporting frame, the supporting frame having mechanical clamping means for bracing the narrow side walls located between the wide side walls. which are operatively connected to hydraulic piston-cylinder units.

Bei der zum Zeitpunkt der Anmeldung noch nicht veröffentlichten DE-OS 38 33 014.8, die eine Stahlstranggießkokille obiger Bauart zum Gegenstand hat, sind zur Verspannung der zwischen den Breitseitenwänden befindlichen Schmalseitenwände als mechanische Spannelemente Druckfedern vorgesehen, deren Klemmkräfte durch parallel geschaltete Hydraulikzylinder verändert werden können. Die von den Druckfedern erzeugten Klemmkräfte sind hierbei entsprechend der zum Verstellen der Schmalseitenwände erforderlichen Anpreßkraft überhöht ausgelegt, und die hydraulischen Druckzylinder im Sinne einer Verminderung der Anpreßkraft beaufschlagbar. Ferner ist hierbei nur einer von den beiden Stützrahmen, an denen die Breitseitenwände befestigt sind, in der Stranggießkokille verstellbar angeordnet. Durch diese Ausgestaltung der Stahlstranggießkokille wird auf einfache Weise eine genaue Einstellung der Anpreßkräfte und eine erhöhte Betriebssicherheit gegen öffnen der Breitseitenwand beim Gießen erreicht. Üblicherweise sind die Breitseitenwände zueinander parallel angeordnet, um den Verstellweg für den einen Stützrahmen möglichst gering zu halten.In DE-OS 38 33 014.8, which was not yet published at the time of registration, and which relates to a continuous steel casting mold of the above type, compression springs are provided for tensioning the narrow side walls located between the wide side walls as mechanical tensioning elements, the clamping forces of which can be changed by hydraulic cylinders connected in parallel. The clamping forces generated by the compression springs are designed to be excessive in accordance with the contact pressure required to adjust the narrow side walls, and the hydraulic pressure cylinders can be acted upon in order to reduce the contact pressure. Furthermore, only one of the two support frames, to which the broad side walls are attached, is adjustably arranged in the continuous casting mold. This configuration of the continuous steel casting mold makes it easy to obtain an accurate Adjustment of the contact pressure and increased operational safety against opening of the broad side wall when casting is achieved. The broad side walls are usually arranged parallel to one another in order to keep the adjustment path for the one support frame as small as possible.

Aus der US-A- 4 147 202 sowie der FR- 0 107 564 A1 sind Stranggießkokillen mit zwischen verspannbaren Breitseitenwänden klemmbar gehaltenen Schmalseitenwänden bekannt. Bei diesen wird, ähnlich der vorhergenannten DE-OS 38 33 014, bei ebenfalls nur einem verstellbaren Stützrahmen eine durch Federn aufgebrachte und durch mechanische Spannelemente auf die Breitseitenwände übertragene Spannkraft zum Verstellen des Kokillenquerschnitts hydraulisch überwunden.US Pat. No. 4,147,202 and FR-0 107 564 A1 disclose continuous casting molds with narrow side walls held clampable between wide side walls that can be clamped. In these, similarly to the aforementioned DE-OS 38 33 014, with only one adjustable support frame, a tension force applied by springs and transmitted to the broad side walls by mechanical tensioning elements for adjusting the mold cross section is hydraulically overcome.

Die Aufgabe der Erfindung besteht in einer Verbesserung des vorstehend angeführten Standes der Technik hinsichtlich der Funktion der Verstellmittel und Spannelemente sowie deren Wartung, insbesondere derart, daß ein Verstellen der Breitseitenwände mit vergrößertem Verstellweg und dadurch eine bessere Zugänglichkeit und leichtere Ausbaubarkeit ermöglicht wird. Auch sollen Stranggießkokillen mit trichterförmigem Querschnitt der Breitseitenwände zueinander so ausgebildet werden, daß sie ein beidseitiges Verstellen ermöglichen, so z. B. bei einem Durchbruch, der einen größeren Verstellweg erforderlich macht.The object of the invention is to improve the above-mentioned prior art with regard to the function of the adjusting means and tensioning elements and their maintenance, in particular in such a way that an adjustment of the wide side walls with an enlarged adjustment path and thereby better accessibility and easier expansion is made possible. Continuous casting molds with a funnel-shaped cross section of the broad side walls should also be designed so that they enable adjustment on both sides, for. B. in a breakthrough that requires a larger adjustment.

Diese Aufgabe wird bei einer Stranggießkokille der im Oberbegriff genannten Art mit der Erfindung entsprechend den Merkmalen im Kennzeichnungsteil von Anspruch 1 gelöst.This object is achieved in a continuous casting mold of the type mentioned in the preamble with the invention according to the features in the characterizing part of claim 1.

Infolge der erfindungsgemäßen Ausbildung können die Stützrahmen der Stranggießkokille mit ihren Breitseitenwänden soweit voneinander gespreizt werden, daß die an den Stützplatten angeordneten Schmalseitenwände von beiden Seiten zugängig, sehr leicht auch zusammen mit den Stützplatten auszubauen und im Bedarfsfall erneuerbar sind. Auch das Abreinigen der Stranggießkokille in den Schmalseitenbereichen sowie die Wartung der Stranggießkokille insgesamt wird hierdurch ganz wesentlich vereinfacht und erleichtert. Die Stützrahmen mit ihren Breitseitenwänden sind hierbei sehr vorteilhaft in der Stranggießkokille so angeordnet und mit den Spannelementen verbunden, daß sie um etwa 70 mm je Seite gespreizt werden können. Hierdurch kann das Strangende im Bereich der Kokille freigelegt und die Kokille leicht ausgebaut werden. So läßt sich die Kokille nach einem Durchbruch erfindungsgemäß über das in der Kokille erstarrte trichterförmige Strangende hinweg sehr leicht nach oben hin abheben.As a result of the training according to the invention, the Support frames of the continuous casting mold with their wide side walls are spread apart from one another to such an extent that the narrow side walls arranged on the support plates are accessible from both sides, can be removed very easily together with the support plates and can be renewed if necessary. The cleaning of the continuous casting mold in the narrow side areas as well as the maintenance of the continuous casting mold as a whole is thereby considerably simplified and facilitated. The support frames with their broad side walls are very advantageously arranged in the continuous casting mold and connected to the tensioning elements in such a way that they can be spread by about 70 mm on each side. As a result, the end of the strand in the area of the mold can be exposed and the mold can be easily removed. Thus, according to the invention, after a breakthrough, the mold can very easily be lifted upwards above the funnel-shaped strand end that solidifies in the mold.

Nach der Erfindung sind die Stützrahmen mit ihren Breitseitenwänden in der Stranggießkokille so angeordnet und mit den Spannelementen verbunden, daß sie sowohl zueinander als auch voneinander verstellt werden können. Die hierfür erforderlichen Mittel bestehen aus federelastischen Zugstangen, die die beiden Stützrahmen mit ihren Breitseitenwänden verbinden. Von diesen federelastischen Zugstangen werden die beim Gießvorgang des Metallstranges auftretenden Spannkräfte voll übernommen, so daß der Einbau von Tellerfederpaketen entfällt. Dabei sind sehr vorteilhaft die federelastischen Zugstangen an einem Ende mit je einer Keilnut versehen, in die beim Verspannen der Schmalseitenwände als Spannelemente Keile eingeführt werden, die über Schubstangen und ein mit Gelenk versehenes Schwenklager, das mit einer hydraulischen Kolben-Zylindereinheit in Wirkverbindng steht, betätigbar sind. Diese Ausgestaltung der Erfindung ermöglicht mit einer hydraulischen Kolben-Zylindereinheit auf einfache Weise eine kraftschlüssige Verspannung und damit ein ausreichend festes Einklemmen und Verriegeln der Schmalseitenwände zwischen den Breitseitenwänden über beide federelastischen Zugstangen gleichzeitig.According to the invention, the support frames are arranged with their wide side walls in the continuous casting mold and connected to the tensioning elements in such a way that they can be adjusted both to one another and from one another. The means required for this consist of resilient tie rods that connect the two support frames with their broad side walls. From these spring-elastic tie rods, the clamping forces occurring during the casting process of the metal strand are fully taken over, so that the installation of disc spring assemblies is not necessary. The resilient tie rods are very advantageously provided at one end with a keyway, into which wedges are inserted as tensioning elements when the narrow side walls are clamped, which have push rods and a swivel bearing provided with a joint is operatively connected to a hydraulic piston-cylinder unit, can be actuated. This embodiment of the invention enables a hydraulic piston-cylinder unit in a simple manner a non-positive clamping and thus a sufficiently firm clamping and locking of the narrow side walls between the broad side walls via both spring-elastic tie rods at the same time.

Für eine unproblematische Verstellbarkeit hilft auch die Maßnahme, daß die Stützrahmen mit Führungsschienen versehen und diese auf Führungsstücken gleitend geführt sind. Hierdurch wird erreicht, daß die Stützrahmen, insbesondere an der Festseite, mit ihren Breitseitenwänden nach dem öffnen (Spreizen) wiederum genau die ursprüngliche Position einnehmen und daher ein nachträgliches Ausrichten der Zentriersteine entfällt.For an unproblematic adjustability, the measure also helps that the support frames are provided with guide rails and these are slidably guided on guide pieces. This ensures that the support frame, in particular on the fixed side, with its wide side walls after opening (spreading) in turn assume exactly the original position and therefore there is no need to subsequently align the centering stones.

Schließlich sind in weiterer vorteilhafter Ausgestaltung der Erfindung die die Schmalseitenwände tragenden und als Wasserspannplatten ausgebildeten Schmalseitenteile unverstellbar angeordnet und mit dem Kokillenhubtisch fest verbunden. Dies vermeidet ein Verschieben auf den Dichtungsringen der Wasserspannplatte und eine zeitaufwendige Schlauchmontage beim Ein- und Ausbau der Stranggießkokille.Finally, in a further advantageous embodiment of the invention, the narrow side parts which carry the narrow side walls and are designed as water tensioning plates are arranged in an unadjustable manner and are firmly connected to the mold lifting table. This avoids moving on the sealing rings of the water clamping plate and time-consuming hose assembly when installing and removing the continuous casting mold.

Weitere Einzelheiten, Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Erläuterung einer in Zeichnungsfiguren schematisch dargestellten Stranggießkokille gemäß der Erfindung.Further details, features and advantages of the invention result from the following explanation of a continuous casting mold according to the invention, which is shown schematically in the drawing figures.

Es zeigen:

Fig. 1
eine Stranggießkokille gemäß der Erfindung in Seitenansicht,
Fig. 2
eine Draufsicht auf die Stranggießkokille gemäß Fig. 1 als Teillängsschnitt in geschlossener Position,
Fig. 3
eine Draufsicht auf die Stranggießkokille gemäß Fig. 1 im Teillängsschnitt in geöffneter Position,
Fig. 4
die federelastischen Zugstangen in verspannter Position mit Verspannvorrichtung im Schnitt,
Fig. 5
die federelastischen Zugstangen in entspannter offener Position mit Verspannvorrichtung im Schnitt.
Show it:
Fig. 1
a continuous casting mold according to the invention in side view,
Fig. 2
2 shows a plan view of the continuous casting mold according to FIG. 1 as a partial longitudinal section in the closed position,
Fig. 3
2 shows a plan view of the continuous casting mold according to FIG. 1 in partial longitudinal section in the open position,
Fig. 4
the resilient tie rods in the tensioned position with tensioning device in section,
Fig. 5
the spring-elastic tie rods in a relaxed open position with a tensioning device in section.

Wie die Figuren 1 und 2 zeigen, besteht die Stranggießkokille aus einem Stützrahmen (1) für die Losseite und einem Stützrahmen (2) für die Festseite sowie aus den Schmalseitenteilen (3) und den Stützplatten (4). Auf den Stützrahmen (1) und (2) sind innen die Breitseitenwände (9) und an den Stützplatten (4) die Schmalseitenwände (5) angeordnet. Sowohl die Breitseitenwände (9) als auch die Schmalseitenwände (5) sind hierbei als Kupferplatten ausgebildet und mit den Stützrahmen (1, 2) bzw. mit den Stützplatten (4) mittels in den Zeichnungsfiguren nicht näher dargestellten Schrauben lösbar verbunden. Ferner ist die Stranggießkokille beidseitig mit einer Schmalseitenverstelleinrichtung (6) versehen (in Fig. 1 links im Schnitt zu erkennen). Die beiden Stützrahmen (1, 2) mit ihren gegenüberliegend angeordneten Breitseitenwänden (9) werden gemäß der Erfindung mit Hilfe von federelastischen Zugstangen (7) und Keilen (8), die als Spannelemente dienen, gegen die Schmalseitenwände (5) fest verspannt. Hierzu ist jede federelastische Zugstange (7) an einem Ende mit einer Keilnut (7') versehen, in die beim Verspannen der Schmalseitenwände (5) zwischen den Breitseitenwanden (9) der Keil (8) eingeschoben wird, und zwar mittels einer hydraulischen Kolben-Zylindereinheit (10), die, wie insbesondere die Figuren 4 und 5 zeigen, über ein Schwenklager (11) und Schubstangen (13) mit dem Keil (8) bzw. Keilen (8) in Wirkverbindung steht. Die hierbei erforderliche Anpreßkraft der Breitseitenwände (9) auf die Schmalseitenwände (5) laßt sich durch den Druck der vom Hydraulikzylinder der hydraulischen Kolbenzylindereinheit (10) auf das Spannelement (Keil 8) wirkt, sehr leicht und genau einstellen. Das Schwenklager (11) ist hierbei, wie Fig. 1 zeigt, auf die Kolbenstange (11') des Hydraulikzylinders der Kolben-Zylindereinheit (10) aufgeschraubt, wodurch die Montage und Demontage der Kolben-Zylindereinheit (10) vereinfacht und erleichtert wird. Dieses mit der Kolbenstange (11') der Kolben-Zylindereinheit (10) lösbar verbundene Schwenklager (11) steht seinerseits über einen Bolzen (12) mit den beiden Schubstangen (13) und andererseits mit den als Keile (8) ausgebildeten Spannelementen in Verbindung. Zur Führung der Keile (8) dient eine in einem Lagerkörper (14) angeordnete Buchse (15). Der Lagerkörper (14) selbst ist am Stützrahmen (1) der Losseite angeschweißt.As Figures 1 and 2 show, the continuous casting mold consists of a support frame (1) for the loose side and a support frame (2) for the fixed side as well as the narrow side parts (3) and the support plates (4). The broad side walls (9) are arranged on the inside of the support frames (1) and (2) and the narrow side walls (5) are arranged on the support plates (4). Both the broad side walls (9) and the narrow side walls (5) are designed as copper plates and are not shown in more detail with the support frames (1, 2) or with the support plates (4) in the drawing figures shown screws releasably connected. Furthermore, the continuous casting mold is provided on both sides with a narrow side adjustment device (6) (to be seen in section on the left in FIG. 1). The two support frames (1, 2) with their oppositely arranged broad side walls (9) are clamped against the narrow side walls (5) according to the invention with the aid of spring-elastic tie rods (7) and wedges (8), which serve as tensioning elements. For this purpose, each resilient tie rod (7) is provided at one end with a keyway (7 ') into which the wedge (8) is inserted between the broad side walls (9) when the narrow side walls (5) are clamped, by means of a hydraulic piston Cylinder unit (10), which, as shown in particular in FIGS. 4 and 5, is operatively connected to the wedge (8) or wedge (8) via a swivel bearing (11) and push rods (13). The contact pressure of the broad side walls (9) on the narrow side walls (5) required here can be set very easily and precisely by the pressure acting on the tensioning element (wedge 8) from the hydraulic cylinder of the hydraulic piston-cylinder unit (10). The pivot bearing (11), as shown in FIG. 1, is screwed onto the piston rod (11 ') of the hydraulic cylinder of the piston-cylinder unit (10), which simplifies and simplifies the assembly and disassembly of the piston-cylinder unit (10). This pivot bearing (11), which is detachably connected to the piston rod (11 ') of the piston-cylinder unit (10), is in turn connected to the two push rods (13) via a bolt (12) and, on the other hand, to the as wedges (8). trained clamping elements in connection. A bushing (15) arranged in a bearing body (14) serves to guide the wedges (8). The bearing body (14) itself is welded to the support frame (1) on the loose side.

Auf der Festseite sind die federelastischen Zugstangen (7) an ihrem Bund (16') fest mit dem Stützrahmen (2) verschraubt. Um die Lage der an den Zugstangen (7) angeordneten Keilnuten (7'), insbesondere mit der Änderung der Formatdicke des Gießstranges in übereinstimmung zu bringen, sind, wie insbesondere die Fig. 4 zeigt, zwischen dem Bund (16') und dem Stützrahmen (2) Beilagen (16) unterschiedlicher Stärke angeordnet, durch die Maßunterschiede ausgeglichen werden.On the fixed side, the resilient tie rods (7) are firmly screwed to the support frame (2) at their collar (16 '). In order to bring the position of the keyways (7 ') arranged on the tie rods (7) into agreement, in particular with the change in the format thickness of the casting strand, as is shown in particular in FIG. 4, between the collar (16') and the support frame (2) Supplements (16) of different thickness arranged, by means of which differences in size are compensated.

Zum Spreizen der Stützrahmen (1, 2) mit den Breitseitenwänden (9) sind, wie Fig. 4 zeigt, an den Stützrahmen (1, 2) der Fest- und Losseite je zwei Hydraulikzylinder (28) zwischen den Zugstangen (7) eingeschraubt. Dies erfordert vorher das Auskuppeln der als Spannelemente dienenden Keile (8) mit Hilfe der hydraulischen Kolbenzylindereinheit (10) in die in Fig. 5 dargestellte entriegelte Position. Die Stützrahmen (1, 2) lassen sich anscbließend mit ihren Breitseitenwänden (9) sehr vorteilhaft gegenüber den Schmalseitenwänden (5) um ca. 70 mm nach jeder Seite in die in Fig. 3 aufgezeigte, geöffnete Stellung verschieben. Im übrigen entlasten die Hydraulikzylinder (28) die Schmalseitenwände (5) bei Änderung der Formatbreite. In dieser in Fig. 3 aufgezeigten, geöffneten Stellung der Stützrahmen (1, 2) mit den Breitseitenwänden (9) läßt sich die Stranggießkokille sehr leicht nach einem Durchbruch bzw. überläufer über das Gießstrangende im Bereich der Kokille ausfördern. Durch die große öffnungsweite der Kokille liegt das Strangende auch im Bereich des in der Zeichnung nicht näher dargestellten Eingußtrichters frei. Auch das Reinigen und Warten der Schmal- und Breitseitenwände (5, 9) sowie das Auswechseln der Schmalseitenstützplatten (4) wird durch die erfindungsgemäß ausgebildete Verstelleinrichtung an der Stranggießkokille ganz wesentlich vereinfacht und erleichtert. Darüberhinaus läßt sich die Verstell- und Verspanneinrichtung gemäß der Erfindung auch bei herkömmlichen Kokillen mit parallelen Breitseitenwänden anwenden. Die öffnungsweite der Kokille kann hierbei auch kleiner, d. h. unter 70 mm, ausgeführt werden.For spreading the support frame (1, 2) with the broad side walls (9), as shown in FIG. 4, two hydraulic cylinders (28) are screwed between the tie rods (7) on the support frame (1, 2) on the fixed and loose side. This requires previously disengaging the wedges (8) serving as tensioning elements with the aid of the hydraulic piston-cylinder unit (10) into the unlocked position shown in FIG. 5. The wide side walls (9) of the support frames (1, 2) can then be moved very advantageously relative to the narrow side walls (5) by about 70 mm to the open position shown in FIG. 3 on each side. Otherwise, the hydraulic cylinders (28) relieve the narrow side walls (5) when the format width changes. In this in Fig. 3rd shown, open position of the support frame (1, 2) with the wide side walls (9), the continuous casting mold can be very easily conveyed out after a breakthrough or overflow over the casting strand end in the area of the mold. Due to the large opening width of the mold, the end of the strand is also exposed in the region of the sprue not shown in the drawing. The cleaning and maintenance of the narrow and wide side walls (5, 9) and the replacement of the narrow side support plates (4) is also considerably simplified and facilitated by the adjustment device on the continuous casting mold designed according to the invention. In addition, the adjustment and bracing device according to the invention can also be used in conventional molds with parallel broad side walls. The opening width of the mold can also be made smaller, ie less than 70 mm.

Wenn im Einsatz der Stranggießkokille eine Änderung der Formatbreite durch Verschieben der Schmalseitenwände (5) erforderlich ist, entlasten die Hydraulikzylinder (28) auf der Losseite die Schmalseitenwände (5). Dies hat eine weitere Vorspannung der federelastischen Zugstange (7) zur Folge. Im geöffneten Zustand der Stranggießkokille ist ein Auswechseln der Stützplatten (4) auch während einer Gießpause möglich. Die beiden die Breitseitenwände (9) tragenden Stützrahmen (1, 2) sind mit je zwei Führungsschienen (17) versehen, die in Führungsstücken (18) geführt sind und in der Höhe zentriert werden.If it is necessary to change the format width by moving the narrow side walls (5) when using the continuous casting mold, the hydraulic cylinders (28) on the loose side relieve the narrow side walls (5). This results in a further pre-tensioning of the spring-elastic pull rod (7). In the open state of the continuous casting mold, the support plates (4) can also be replaced during a casting break. The two supporting frames (1, 2) carrying the broad side walls (9) are each provided with two guide rails (17) which are guided in guide pieces (18) and are centered in height.

Die beiden Schmalseitenteile (3) besitzen für die Fest- bzw. Losseite unterschiedliche Zentriersteine (19, 20). Das Ausrichten der Zentriersteine (19, 20) erfolgt mit Hilfe von Stellschrauben (21). Die Aufsetzflächen der Schmalseitenteile (3) sind hierbei sehr vorteilhaft als Wasserspannplatten ausgebildet. Das Kühlwasser gelangt von der in der Zeichnung nicht näher dargestellten Kokillenhubvorrichtung über die Wasserspannplatte, Rohrleitungen (22) und Kompensatoren (23) zu den Breitseitenwänden (9) sowie über Rohrleitungen (24), Schläuche (25) und dem Schmalwandseitenträger (26) zu den Schmalseitenwänden (5). Die Führungssäule des Schmalseitenteils (3) dient zur Aufnahme der Schmalseitenverstelleinheit (6), als Anlagefläche für den Festseitenstützrahmen (2), zur Führung der Zugstangen (7) sowie zur Befestigung des Schwenklagers (27).The two narrow side parts (3) have different centering stones (19, 20) for the fixed or loose side. The centering stones (19, 20) are aligned using set screws (21). The contact surfaces of the narrow side parts (3) are very advantageously designed as water tensioning plates. The cooling water passes from the mold lifting device, not shown in the drawing, via the water tensioning plate, pipes (22) and compensators (23) to the wide side walls (9) as well as via pipes (24), hoses (25) and the narrow wall side support (26) Narrow side walls (5). The guide column of the narrow side part (3) serves to accommodate the narrow side adjustment unit (6), as a contact surface for the fixed side support frame (2), for guiding the tie rods (7) and for fastening the swivel bearing (27).

Der Gegenstand der Erfindung ist nicht auf das in den Zeichnungsfiguren dargestellte Ausführungsbeispiel beschränkt. So kann beispielsweise der die Breitseitenwand tragende Losseitenstützrahmen (1) gegebenenfalls auch mit vier Tellerfederpaketen gegen die Schmalseitenwände (5) verspannt werden. Der Festseitenstützrahmen (2) wird hierbei mit einer Zugstange gegen das Schmalseitenteil verspannt, ein Distanzring zwischen Mittelteil und Festseitenstützrahmen eingelegt, der die Lage der Festseite zur Zentrierung bestimmt.The object of the invention is not limited to the embodiment shown in the drawing figures. For example, the loose side support frame (1) carrying the broad side wall can optionally also be braced against the narrow side walls (5) with four plate spring assemblies. The fixed side support frame (2) is clamped against the narrow side part with a pull rod, a spacer ring is inserted between the central part and the fixed side support frame, which determines the position of the fixed side for centering.

Zum öffnen der Losseite wird der Hohlkolbenzylinder mit Druck beaufschlagt, bis die Tellerfedern keine Zugkraft mehr auf die Zugstange übertragen. Anschließend werden die Laschen auf dem Schmalseitenteil abgehoben und der Verriegelungsbolzen in die öffnungsstellung gedreht. Mit den Hydraulikzylindern werden dann die Fest- und Losseitenstützrahmen nach außen verschoben. Der Schließvorgang erfolgt in umgekehrter Reihenfolge.The hollow piston cylinder is used to open the loose side pressurized until the disc springs no longer transmit tensile force to the pull rod. Then the tabs on the narrow side part are lifted off and the locking bolt is turned into the open position. The fixed and loose side support frames are then moved outwards with the hydraulic cylinders. The closing process takes place in reverse order.

In Abänderung dieser vorstehend geschilderten Ausgestaltung der Kokille gemäß der Erfindung kann die Zugstange auch sehr vorteilhaft als elastisches Dehnelement ausgeführt werden, so daß Tellerfederpakete und Hohlkolben-Zylinder entfallen.In a modification of the above-described embodiment of the mold according to the invention, the pull rod can also be designed very advantageously as an elastic expansion element, so that disc spring assemblies and hollow piston cylinders are omitted.

Gemäß einer anderen Variante des Erfindungsgegenstandes wird die Festseite mit zwei doppeltwirkenden Kolben-Zylindern gegen das Schmalseitenteil gezogen. Die Losseite wird ebenfalls mit zwei doppeltwirkenden Kolben-Zylindern gegen die Schmalseitenwände gezogen. Zuganker, Tellerfedern und Hohlkolbenzylinder werden bei dieser Variante nicht eingesetzt. Die während des Gießens auftretenden Kräfte in der Kokille werden von den Hydraulikzylindern aufgenommen und kompensiert. Das öffnen und Schließen der Kokille sowie das Entlasten der Schmalseitenwände bei Änderung der Formatbreite des Gießstranges erfolgt hierbei ebenfalls mit Hilfe der Hydraulikzylinder.According to another variant of the subject matter of the invention, the fixed side is pulled against the narrow side part with two double-acting piston cylinders. The loose side is also pulled against the narrow side walls with two double-acting piston cylinders. Tie rods, disc springs and hollow piston cylinders are not used in this variant. The forces in the mold during casting are absorbed and compensated by the hydraulic cylinders. The opening and closing of the mold as well as the relieving of the narrow side walls when changing the format width of the casting strand is also carried out with the help of the hydraulic cylinders.

Claims (4)

  1. Continuous casting chill mould with two wide side walls (9), which are arranged opposite one another on support frames (1, 2) and between which narrow side walls (5) displaceable relative to one another for the purpose of setting the mould width are firmly clamped in, and means for adjusting the wide sides are associated with the support frames (1, 2), wherein the support frame (1, 2) comprises mechanical clamping means, which stand in operative connection with hydraulic piston-cylinder units (10), for clamping of the narrow side walls (5) disposed between the wide side walls (9), characterised thereby
    a) that the support frames (1, 2) together with their wide side walls (9) are so arranged in the continuous casting chill mould and connected with the clamping elements (7, 8) that they can be adjusted both towards one another and away from one another,
    b) that the mechanical clamping elements consist of resilient tie rods (7), which connect the two support frames (1, 2) with their wide side walls (9),
    c) that the resilient tie rods (7) are provided at one end with a wedge groove (7') in which a wedge (8), which stands in operative connection with a hydraulic piston-cylinder unit (10) by way of a pushrod (13) and a pivot bearing (11), is introduced on clamping of the narrow side walls (5), and
    d) that for spreading of the support frames (1, 2) together with the wide side walls (9) two hydraulic cylinders (28) are screwed in at each of the support frames (1, 2) of the fixed and loose side and between the tie rods (7).
  2. Continuous casting chill mould according to claim 1, characterised thereby that the support frames (1, 2) together with their wide side walls (9) are so arranged in the continuous casting chill mould and connected with the clamping elements (7, 8) that they can be spread towards the narrow side walls (5) by about 70 millimetres for each side.
  3. Continuous casting chill mould according to claim 1 or 2, characterised thereby that the support frames (1, 2) are provided with guide rails (17) which are slidingly guided on guide members (18).
  4. Continuous casting chill mould according to claim 1 to 3, characterised thereby that the narrow side parts (3), which carry the narrow side walls (5) and are constructed as water clamping plates, are non-adjustably arranged and fixedly connected with the chill mould lifting table.
EP90115910A 1989-09-11 1990-08-20 Continuous casting mould Expired - Lifetime EP0417504B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3930265 1989-09-11
DE3930265A DE3930265A1 (en) 1989-09-11 1989-09-11 CONTINUOUS CHOCOLATE

Publications (3)

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EP0417504A2 EP0417504A2 (en) 1991-03-20
EP0417504A3 EP0417504A3 (en) 1993-03-17
EP0417504B1 true EP0417504B1 (en) 1996-01-03

Family

ID=6389155

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90115910A Expired - Lifetime EP0417504B1 (en) 1989-09-11 1990-08-20 Continuous casting mould

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Country Link
US (1) US5085263A (en)
EP (1) EP0417504B1 (en)
JP (1) JPH03264144A (en)
AT (1) ATE132407T1 (en)
CA (1) CA2024838C (en)
DE (2) DE3930265A1 (en)
DK (1) DK0417504T3 (en)
ES (1) ES2081882T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5522450A (en) * 1993-12-20 1996-06-04 Voest-Alpine Industrieanlagenbau Gmbh Continuous casting plate mold
EP0920937A2 (en) * 1997-12-05 1999-06-09 Sms Schloemann-Siemag Aktiengesellschaft Continuous casting mould

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4444941C3 (en) * 1993-12-20 2003-07-24 Voest Alpine Ind Anlagen continuous casting
DE4447941B4 (en) * 1993-12-20 2006-06-14 Voest-Alpine Industrieanlagenbau Gmbh A continuously casting chill mould for rectangular slabs - which reduces construction costs, maintenance and mould change times, without sacrificing rigidity
DE19716664C2 (en) * 1997-04-22 1999-11-18 Schloemann Siemag Ag Method and device for bracing two opposite broad side walls of a continuous casting mold
KR20040017554A (en) * 2002-08-22 2004-02-27 주식회사 포스코 Apparatus for adjusting the width mold, using hydraulic system
US6857464B2 (en) * 2002-09-19 2005-02-22 Hatch Associates Ltd. Adjustable casting mold
DE102010061828A1 (en) 2010-07-28 2012-02-02 Sms Siemag Ag continuous casting
CN103192040B (en) * 2013-04-15 2015-12-16 中国重型机械研究院股份公司 A kind of crystallizer system flowing slab for continuous pouring two
AT521535B1 (en) * 2018-07-18 2021-10-15 Primetals Technologies Austria GmbH Mold for producing a cast strand
RU2769679C1 (en) * 2021-08-05 2022-04-05 Федеральное государственное бюджетное образовательное учреждение высшего образования "Комсомольский-на-Амуре государственный университет" (ФГБОУ ВО "КнАГУ") Device for production of continuously cast deformed billets

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US3375865A (en) * 1964-10-26 1968-04-02 Tsnii Chernoj Metallurg Mould for a continuous casting machine
JPS531131A (en) * 1976-06-25 1978-01-07 Hitachi Ltd Mold for continuous casting
US4147202A (en) * 1977-08-30 1979-04-03 Clesid S.A. Continuous casting ingot mould
FR2534163B1 (en) * 1982-10-08 1985-08-09 Clecim Sa ADJUSTMENT DEVICE FOR CONTINUOUS CASTING LINGOTIERE
DE3833014C2 (en) * 1988-09-29 2001-07-26 Sms Demag Ag Continuous casting mold

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5522450A (en) * 1993-12-20 1996-06-04 Voest-Alpine Industrieanlagenbau Gmbh Continuous casting plate mold
EP0920937A2 (en) * 1997-12-05 1999-06-09 Sms Schloemann-Siemag Aktiengesellschaft Continuous casting mould
EP0920937A3 (en) * 1997-12-05 2000-05-03 Sms Schloemann-Siemag Aktiengesellschaft Continuous casting mould
US6145580A (en) * 1997-12-05 2000-11-14 Sms Schloemann-Siemag Ag Continuous-casting mold with small side adjustment

Also Published As

Publication number Publication date
ATE132407T1 (en) 1996-01-15
EP0417504A2 (en) 1991-03-20
CA2024838C (en) 2001-01-23
CA2024838A1 (en) 1991-03-12
ES2081882T3 (en) 1996-03-16
DE3930265A1 (en) 1991-03-14
EP0417504A3 (en) 1993-03-17
US5085263A (en) 1992-02-04
DE59010030D1 (en) 1996-02-15
JPH03264144A (en) 1991-11-25
DK0417504T3 (en) 1996-01-29

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