EP0077315B1 - Continuous-casting mould - Google Patents

Continuous-casting mould Download PDF

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Publication number
EP0077315B1
EP0077315B1 EP82890127A EP82890127A EP0077315B1 EP 0077315 B1 EP0077315 B1 EP 0077315B1 EP 82890127 A EP82890127 A EP 82890127A EP 82890127 A EP82890127 A EP 82890127A EP 0077315 B1 EP0077315 B1 EP 0077315B1
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EP
European Patent Office
Prior art keywords
strand
mould
adjustment means
wall part
longitudinal axis
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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.)
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EP82890127A
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German (de)
French (fr)
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EP0077315A2 (en
EP0077315A3 (en
Inventor
Hermann Schubert
Heinrich Dipl.-Ing. Thöne
Richard Kasmader
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Voestalpine AG
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Voestalpine AG
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Publication of EP0077315A2 publication Critical patent/EP0077315A2/en
Publication of EP0077315A3 publication Critical patent/EP0077315A3/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
    • B22D11/05—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds into moulds having adjustable walls
    • 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
    • B22D11/045—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for horizontal casting

Definitions

  • the invention relates to a horizontal steel continuous casting mold, in particular for multi-strand casting plants, with a first mold part forming the strand cross-section and at least one second mold part arranged behind it in the direction of strand passage, which is equipped with wall parts supporting the strand surface and coming into contact with it, which can be pressed against the strand surface by means of actuators are.
  • Chillers of this type are known, for example, from DE-B-27 58 514 or from Hermann, Manual of Continuous Casting, Aluminum-Verlag GmbH, Düsseldorf, 1958, picture 430.
  • the wall parts of the second mold part, the so-called aftercooler, which can be pressed onto the strand surface, are moved against the strand shell in these known molds by means of coil springs or pressure medium cylinders.
  • the coil springs or pressure medium cylinders are arranged with their longitudinal axis oriented approximately perpendicular to the strand surface, and at least two springs or pressure medium cylinders are provided for each wall part, at least one spring or one pressure medium cylinder acting on the inlet and outlet ends of each wall part.
  • Springs have the advantage that they take up little space, but they have the disadvantage that the increasing force of the wall parts changes the contact force, so that the wall parts rest against the strand surface during casting, once with a higher and once with a lower contact force.
  • springs do not allow the wall parts to be vented, as is useful, for example, when threading the start-up strand into the mold; a separate ventilation device would have to be provided for this. Unevenly adjusted springs cause uneven wear on the wall parts.
  • Pressure medium cylinders which allow easy ventilation of the wall parts of the aftercooler, however, require a large space behind each wall part of the aftercooler, which is disadvantageous because of the limited space in the mold. In particular, they cannot be used for a multiple continuous caster in which the strands are close together.
  • FR-A-2445744 from which a two-part mold and its adjustment mechanism can be found.
  • the latter includes stacking parts that are parallel and oriented perpendicular to the longitudinal axis of the strand.
  • the invention aims to avoid these disadvantages and difficulties and has as its object to provide a continuous casting mold of the type described which requires little peripheral space, in which the contact force is independent of the abrasion of the wall parts and when viewed over the length of the wall parts , completely the same contact forces and therefore always the same abrasion.
  • each actuator is arranged with their longitudinal axis parallel to the longitudinal axis of the line and that each actuator is connected by means of a direction of movement parallel to the longitudinal axis of the actuator in the direction approximately perpendicular to the longitudinal axis of the device with the inlet and outlet end of a wall part .
  • a single actuator is expediently provided for each wall part.
  • the device deflecting the direction of movement is designed as an angle lever which is articulated on the one hand on the device with a lever arm and on the other hand on the wall part which can be pressed against the strand surface with the second lever arm, the angle lever being pivotable about an axis which is stationary with respect to the mold .
  • the lever arm articulated on the wall part is advantageously connected to this wall part with play.
  • each of the wall parts that can be pressed against the strand surface is guided on a stationary frame part of the mold by means of a guide perpendicular to the longitudinal axis of the strand, wherein for better adaptation of the wall parts to the strand surface, each of the wall parts that can be pressed against the strand surface is attached to a stationary frame part the mold is supported by means of a spherical bearing.
  • a preferred embodiment is characterized in that the actuators are designed as double-acting pressure medium cylinders.
  • the device deflecting the direction of movement is formed by a chain which can be moved in a guide which is curved over a quarter circle and is made up of links which are hinged to one another and which is fastened on the one hand to the wall part and on the other hand to the actuating device.
  • FIG. 1 shows a partially sectioned side view of a horizontal continuous caster in a schematic representation.
  • FIG. 2 illustrates a view according to arrow 111 in FIG. 2 or a section along line 111-111 in FIG. 2.
  • FIG. 4 shows a detail of the further embodiment.
  • a continuous casting mold 3 On an intermediate vessel 1 which can be moved horizontally on rails, a continuous casting mold 3 is tightly fastened in the region of its pouring opening 2 and, in a known manner, has a copper jacket 5 which forms the mold cavity 4 and which is cooled.
  • the aftercoolers 7, 8 have the purpose of cooling the strand shell by intensive cooling of the strand to strengthen and re-melt the strand shell by the inside of the strand. to prevent released heat of crystallization.
  • Each of the aftercoolers 7, 8 has four wall parts 9, hereinafter referred to as cooling plates, through which cooling water flows.
  • the cavity 11 of each cooling plate 9 through which the cooling water flows is connected to a hollow frame 13 of the aftercooler through which the cooling water flows by means of a connector 12 designed as a plug-in tube.
  • a compensator 14, which can compensate for the movement of a cooling plate 9, is provided between the plug-in tube 12 and the frame 13.
  • a graphite plate 15 which ensures optimum heat dissipation from the strand due to its good thermal conductivity, is attached to the side of the cooling plates 9 facing the strand surface. These graphite plates 15 represent wear plates, they enable a low frictional resistance due to their low sliding friction with the strand and thus low extraction forces for the. Strand.
  • a bearing pin 16 is provided on each cooling plate on a rigid yoke 17 of the aftercooler, which carries a spherical bearing 18, on the outer ring of which a guide ring 19 is seated.
  • This guide ring 19 enables a bearing bush mounted on the cooling plate 9 to slide in the direction of the axis 20 of the bearing bolt 16, the axis 20 of the bearing bolt being approximately normal to the plane. the cooling plate 9 is directed.
  • This construction enables the position of each cooling plate to be automatically aligned with the strand surface, thus ensuring that the graphite plate 15 is completely supported on the strand surface.
  • Each cooling plate 9 can be moved in the direction normal to the strand surface by means of an actuator 21, both towards the strand surface and away from the strand surface.
  • the actuator is designed as a double-acting hydraulic cylinder arranged with its longitudinal axis 22 parallel to the line axis 23, which is articulated both with its articulated eye 24 arranged on the cylinder and with its articulated eye 25 provided on the piston by means of bolts 26 each with the longer arm 27 of an angle lever 28 is.
  • Each angle lever 28 is pivotally mounted on the aftercooler by means of a fixed bolt 29.
  • each angle lever is connected in an articulated manner to a bracket 31 screwed onto the cooling plate 9, whereby a bolt 32 is also used for the connection, but this has a play 33 with respect to the bracket 31, so that the angle lever 28 can be easily moved.
  • the movement of a cooling plate 9 towards the strand surface is limited by a stop 34, which is provided on a flange plate 10 of the aftercooler.
  • Each stop 34 interacts with an angle lever 29.
  • the pressure in the cylinders 21 is expediently (advantageously automatically) adjusted to the ferrostatic pressure in the strand sump and to other casting parameters, such as pull-out speed and oscillation of the strand, to an optimal value, so that the support and cooling effect of the cooling plates 9 is optimized with as little friction as possible will.
  • FIG. 4 is another embodiment Shown in which the device deflecting the direction of movement of a cylinder is formed by an arcuate guide 37 which is mounted in an arcuate, approximately 90 ° central angle and is rigidly mounted on the aftercooler and within which a chain 39 formed from link plates 38 which are articulated to one another is guided.
  • the double-acting cylinder 21 is articulated on the one hand with its cylinder and on the other hand with its piston on such a chain 39.
  • support members 40 are hinged to the inlet 35 and outlet end 36 of each wall part 9 of the aftercooler.

Description

Die Erfindung betrifft eine Horizontalstahlstranggießkokille insbesondere für mehrsträngige Gießanlagen, mit einem den Strangquerschnitt formenden ersten Kokillenteil und mindestens einem in Strangdurchlaufrichtung hinter diesem angeordneten zweiten Kokillenteil, der mit die Strangoberfläche stützenden und mit ihr in Kontakt gelangenden Wandteilen ausgestattet ist, die mittels Stellgeräten gegen die Strangoberfläche preßbar sind.The invention relates to a horizontal steel continuous casting mold, in particular for multi-strand casting plants, with a first mold part forming the strand cross-section and at least one second mold part arranged behind it in the direction of strand passage, which is equipped with wall parts supporting the strand surface and coming into contact with it, which can be pressed against the strand surface by means of actuators are.

Kokillen dieser Art sind beispielsweise aus der DE-B-27 58 514 oder aus Hermann, Handbuch des Stranggießens, Aluminium-Verlag GmbH, Düsseldorf, 1958 Bild 430, bekannt. Die an die Strangoberfläche preßbaren Wandteile des zweiten Kokillenteiles, des sogenannten Nachkühlers, werden bei diesen bekannten Kokillen über Schraubenfedern bzw. Druckmittelzylinder gegen die Strangschale bewegt. Dabei sind die Schraubenfedern bzw-Druckmittelzylinder mit ihrer Längsachse etwa senkrecht zur Strangoberfläche gerichtet angeordnet,und es sind je Wandteil mindestens zwei Federn bzw. Druckmittelzylinder vorgesehen, wobei jeweils mindestens eine Feder bzw. ein Druckmittelzylinder am Ein- und am Auslaufende jedes Wandteiles angreift. Federn haben zwar den Vorteil, daß sie wenig Platz beanspruchen, jedoch weisen sie den Nachteil auf, daß sich bei zunehmendem Abrieb der Wandteile die Anstellkraft vervändert, so daß die Wandteile an der Strangoberfläche während des Gießens einmal mit höherer und einmal mit niedrigerer Anstellkraft anliegen.Chillers of this type are known, for example, from DE-B-27 58 514 or from Hermann, Manual of Continuous Casting, Aluminum-Verlag GmbH, Düsseldorf, 1958, picture 430. The wall parts of the second mold part, the so-called aftercooler, which can be pressed onto the strand surface, are moved against the strand shell in these known molds by means of coil springs or pressure medium cylinders. The coil springs or pressure medium cylinders are arranged with their longitudinal axis oriented approximately perpendicular to the strand surface, and at least two springs or pressure medium cylinders are provided for each wall part, at least one spring or one pressure medium cylinder acting on the inlet and outlet ends of each wall part. Springs have the advantage that they take up little space, but they have the disadvantage that the increasing force of the wall parts changes the contact force, so that the wall parts rest against the strand surface during casting, once with a higher and once with a lower contact force.

Weiters ist mit Federn ein Lüften der Wandteile, wie es beispielsweise beim Einfädeln des Anfahrstranges in die Kokille zweckmäßig ist, nicht möglich; es müßte dazu eine eigene Lüftvorrichtung vorgesehen werden. Ungleichmäßig eingestellte Federn bewirken einen ungleichmäßigen Verschleiß der Wandteile.Furthermore, springs do not allow the wall parts to be vented, as is useful, for example, when threading the start-up strand into the mold; a separate ventilation device would have to be provided for this. Unevenly adjusted springs cause uneven wear on the wall parts.

Druckmittelzylinder, die zwar ein einfaches Lüften der Wandteile des Nachkühlers ermöglichen, benötigen jedoch einen großen Raum hinter jedem Wandteil des Nachkühlers, was wegen der beengten Platzverhältnisse bei der Kokille nachteilig ist. Insbesondere sind sie für eine Mehrfach-stranggießanlage, bei der die Stränge eng beieinander liegen, nicht einsetzbar.Pressure medium cylinders, which allow easy ventilation of the wall parts of the aftercooler, however, require a large space behind each wall part of the aftercooler, which is disadvantageous because of the limited space in the mold. In particular, they cannot be used for a multiple continuous caster in which the strands are close together.

Zum stand der Technik ist auch noch auf die FR-A-2445744 zu verweisen, der eine zweiteilige Kokille sowie an Verstellmechanismus derselben entnehmenbar sind. Letzterer beinhaltet Aufvielsteile, die parallel und die senkrecht zur Stranglängsachse orientiert sind.Regarding the state of the art, reference should also be made to FR-A-2445744, from which a two-part mold and its adjustment mechanism can be found. The latter includes stacking parts that are parallel and oriented perpendicular to the longitudinal axis of the strand.

Die Erfindung bezweckt die Vermeidung dieser Nachteile und Schwierigkeiten und stellt sich die Aufgabe, eine Stranggießkokille der eingangs beschriebenen Art zu schaffen, die peripher nur wenig Platz benötigt, bei der die Anstellkraft unabhängig vom Abrieb der Wandteile ist und bei der über die Länge der Wandteile gesehen, vollkommen gleiche Anstellkräfte und somit stets ein gleicher Abrieb vorhanden ist.The invention aims to avoid these disadvantages and difficulties and has as its object to provide a continuous casting mold of the type described which requires little peripheral space, in which the contact force is independent of the abrasion of the wall parts and when viewed over the length of the wall parts , completely the same contact forces and therefore always the same abrasion.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Stellgeräte mit ihrer Längsachse parallel zur Stranglängsachse angeordnet sind und daß jedes Stellgerät mittels einer die parallel zur Stranglängsachse gerichtete Bewegungsrichtung des Stellgerätes in Richtung etwa senkrecht zur Stranglängsachse umlenkenden Einrichtung mit dem Ein- und Auslaufende eines Wandteiles verbunden ist.This object is achieved in that the actuators are arranged with their longitudinal axis parallel to the longitudinal axis of the line and that each actuator is connected by means of a direction of movement parallel to the longitudinal axis of the actuator in the direction approximately perpendicular to the longitudinal axis of the device with the inlet and outlet end of a wall part .

Zweckmäßig ist für jeden Wandteil ein einziges Stellgerät vorgesehen.A single actuator is expediently provided for each wall part.

Gemäß einer bevorzugten Ausführungsform ist die die Bewegungsrichtung umlenkende Einrichtung als Winkelhebel ausgebildet, der einerseits am 8tellgerät mit einem Hebelarm und anderseits an dem gegen die Strangoberfläche preßbaren Wandteil mit dem zweiten Hebelarm gelenkig verbunden ist, wobei der Winkelhebel um eine gegenüber der Kokille ortsfeste Achse schwenkbar ist.According to a preferred embodiment, the device deflecting the direction of movement is designed as an angle lever which is articulated on the one hand on the device with a lever arm and on the other hand on the wall part which can be pressed against the strand surface with the second lever arm, the angle lever being pivotable about an axis which is stationary with respect to the mold .

Dabei ist vorteilhaft der an dem Wandteil angelenkte Hebelarm mit diesem Wandteil mit Spiel verbunden.The lever arm articulated on the wall part is advantageously connected to this wall part with play.

Um eine genaue Lage der Wandteile sicherzustellen, ist jeder der gegen die Strangoberfläche preßbaren Wandteile an einem ortsfesten Gerüstteil der Kokille mittels einer Führung senkrecht zur Stranglängsachse geführt, wobei zur besseren Anpassung der Wandteile an die Strangoberfläche jeder der gegen die Strangoberfläche preßbaren Wandteile an einem ortsfesten Gerüstteil der Kokille mittels eines Gelenklagers gelagert ist.In order to ensure an exact position of the wall parts, each of the wall parts that can be pressed against the strand surface is guided on a stationary frame part of the mold by means of a guide perpendicular to the longitudinal axis of the strand, wherein for better adaptation of the wall parts to the strand surface, each of the wall parts that can be pressed against the strand surface is attached to a stationary frame part the mold is supported by means of a spherical bearing.

Eine bevorzugte Ausführungsform ist dadurch gekennzeichnet, daß die Stellgeräte als doppeltwirkende Druckmittelzylinder ausgebildet sind.A preferred embodiment is characterized in that the actuators are designed as double-acting pressure medium cylinders.

Bei einer weiteren bevorzugten Ausführungsform ist die die Bewegungsrichtung umlenkende Einrichtung von einer in einer über einen Viertelkreis bogenförmigen Führung bewegbaren und aus aneinander angelenkten Gliedern bestehenden Kette ausgebildet, die einerseits am Wandteil und anderseits am Stellgerät befestigt ist.In a further preferred embodiment, the device deflecting the direction of movement is formed by a chain which can be moved in a guide which is curved over a quarter circle and is made up of links which are hinged to one another and which is fastened on the one hand to the wall part and on the other hand to the actuating device.

Die Erfindung ist nachstehend anhand der Zeichnung näher erläutert, wobei Fig. 1 eine teilweise geschnittene Seitenansicht einer Horizontalstranggießanlage in schematischer Darstellung zeigt. In Fig. 2 ist ein Nachkühler der Stranggießkokille in vergrößertem Maßstab teilweise im Längsschnitt dargestellt. Fig. 3 veranschaulicht eine Ansicht gemäß dem Pfeil 111 der Fig. 2 bzw. einen Schnitt gemäß der Linie 111-111 der Fig. 2. In Fig. 4 ist ein Detail der weiteren Ausführungsform gezeigt.The invention is explained in more detail below with reference to the drawing, in which Fig. 1 shows a partially sectioned side view of a horizontal continuous caster in a schematic representation. 2, an aftercooler of the continuous casting mold is shown on an enlarged scale, partly in longitudinal section. FIG. 3 illustrates a view according to arrow 111 in FIG. 2 or a section along line 111-111 in FIG. 2. FIG. 4 shows a detail of the further embodiment.

An einem auf Schienen horizontal verfahrbaren Zwischen-gefäß 1 ist im Bereich von dessen Ausgußöffnung 2 eine Strang-gießkokille 3 dicht befestigt, die in bekannter Weise einen den Formhohlraum 4 bildenden Kupfermantel 5, welcher gekühlt ist, aufweist.On an intermediate vessel 1 which can be moved horizontally on rails, a continuous casting mold 3 is tightly fastened in the region of its pouring opening 2 and, in a known manner, has a copper jacket 5 which forms the mold cavity 4 and which is cooled.

In Strangdurchlaufrichtung gesehen, sind hinter diesem den Formhohlraum 4 bildenden ersten Kokillenteil 6 zwei weitere Kokillenteile 7 und 8 angeordnet, die jeweils mit die Strangoberfläche stützenden und mit der Strangoberfläche in Kontakt gelangenden Wandteilen 9 ausgestattet sind.Seen in the direction of the strand Arranged behind this first mold part 6, which forms the mold cavity 4, are two further mold parts 7 and 8, each of which is equipped with wall parts 9 that support the strand surface and come into contact with the strand surface.

Diese beiden weiteren Kokillenteile 7, 8, die nachfolgend als Nachkühler bezeichnet sind, sind an dem ersten Kokillenteil 6 mittels Flanschplatten 10 befestigt und bilden mit diesem zusammen die Horizontalstranggießkokille 3. Die Nachkühler 7, 8 haben den Zweck, die Strangschale durch intensives Kühlen des Stranges zu verstärken und ein Wiederaufschmelzen der Strangschale durch die im Stranginneren. frei werdende Kristallisationswärme zu verhindern. Jeder der Nachkühler 7, 8 weist vier Wandteile 9, nachfolgend als Kühlplatten bezeichnet, auf, die von Kühlwasser durchflossen werden. Der vom Kühlwasser durchflossene Hohlraum 11 jeder Kühlplatte 9 ist zu diesem Zweck mittels eines als Steckrohr 12 ausgebildeten Anschlußstückes an einem vom Kühlwasser durchflossenen hohlen Rahmen 13 des Nachkühlers angeschlossen. Zwischen dem Steckrohr 12 und dem Rahmen 13 ist ein Kompensator 14, der die Bewegung einer Kühlplatte 9 ausgleichen kann, vorgesehen.These two further mold parts 7, 8, which are referred to below as aftercoolers, are fastened to the first mold part 6 by means of flange plates 10 and together form the horizontal continuous casting mold 3. The aftercoolers 7, 8 have the purpose of cooling the strand shell by intensive cooling of the strand to strengthen and re-melt the strand shell by the inside of the strand. to prevent released heat of crystallization. Each of the aftercoolers 7, 8 has four wall parts 9, hereinafter referred to as cooling plates, through which cooling water flows. For this purpose, the cavity 11 of each cooling plate 9 through which the cooling water flows is connected to a hollow frame 13 of the aftercooler through which the cooling water flows by means of a connector 12 designed as a plug-in tube. A compensator 14, which can compensate for the movement of a cooling plate 9, is provided between the plug-in tube 12 and the frame 13.

An der zur Strangoberfläche gerichteten Seite der Kühlplatten 9 ist jeweils eine Graphitplatte 15, die durch ihre gute Wärmeleitfähigkeit eine optimale Wärmeabfuhr vom Strang gewährleistet, angebracht. Diese Graphitplatten 15 stellen Verschleißplatten dar, sie ermöglichen durch ihre niedrige Gleitreibung mit dem Strang einen geringen Reibungswiderstand und damit geringe Ausziehkräfte für den. Strang. Zum Halten jeder Kühlplatte 9 ist je Kühlplatte ein Lagerbolzen 16 an einem starren Joch 17 des Nachkühlers vorgesehen, der ein Gelenklager 18 trägt, auf dessen Außen-ring ein Führungsring 19 sitzt. Dieser Führungsring 19 ermöglicht das Gleiten einer an der Kühlplatte 9 montierten Lagerbüchse in Richtung der Achse 20 des Lagerbolzens 16, wobei die Achse 20 des Lagerbolzens etwa normal zur Ebene. der Kühlplatte 9 gerichtet ist. Durch diese Konstruktion ist ein selbsttätiges Ausrichten der Lage jeder Kühlplatte an die Strangoberfläche möglich und somit eine ganzflächige Auflage der Graphitplatte 15 an der Strangoberfläche gewährleistet.A graphite plate 15, which ensures optimum heat dissipation from the strand due to its good thermal conductivity, is attached to the side of the cooling plates 9 facing the strand surface. These graphite plates 15 represent wear plates, they enable a low frictional resistance due to their low sliding friction with the strand and thus low extraction forces for the. Strand. To hold each cooling plate 9, a bearing pin 16 is provided on each cooling plate on a rigid yoke 17 of the aftercooler, which carries a spherical bearing 18, on the outer ring of which a guide ring 19 is seated. This guide ring 19 enables a bearing bush mounted on the cooling plate 9 to slide in the direction of the axis 20 of the bearing bolt 16, the axis 20 of the bearing bolt being approximately normal to the plane. the cooling plate 9 is directed. This construction enables the position of each cooling plate to be automatically aligned with the strand surface, thus ensuring that the graphite plate 15 is completely supported on the strand surface.

Jede Kühlplatte 9 läßt sich mittels eines Stellgerätes 21 in Richtung normal auf die Strangoberfläche bewegen,und zwar sowohl zur Strangoberfläche hin als auch von der Strangoberfläche weg. Das Stellgerät ist als doppeltwirkender, mit seiner Längsachse 22 parallel zur Strangachse 23 angeordneter Hydraulikzylinder ausgebildet, welcher sowohl mit seinem am Zylinder angeordneten Gelenkauge 24 als auch mit seinem am Kolben vorgesehenen Gelenkauge 25 mittels Bolzen 26 jeweils mit dem längeren Arm 27 eines Winkelhebels 28 gelenkig verbunden ist. Jeder Winkelhebel 28 ist mittels eines ortsfesten Bolzens 29 am Nachkühler schwenkbar gelagert. Der kurze Arm 30 jedes Winkelhebels ist mit einer auf der Kühlplatte 9 aufgeschraubten Konsole 31 gelenkig verbunden, wobei zur Verbindung ebenfalls ein Bolzen 32 dient, der jedoch gegenüber der Konsole 31 ein Spiel 33 aufweist, damit eine gute Beweglichkeit des Winkelhebels 28 gewährleistet ist. Die Bewegung einer Kühlplatte 9 zur Strangoberfläche hin wird durch einen Anschlag 34, der jeweils an einer Flanschplatte 10 des Nachkühlers vorgesehen ist, begrenzt. Jeder Anschlag 34 wirkt jeweils mit einem Winkelhebel 29 zusammen. Beim Lüften einer Kühlplatte 9 gelangen ebenfalls Anschläge der Kühlplattenrückseite mit dem Winkelhebel 28 in Kontakt, so daß auch die Bewegung der Kühlplatte 9 in Richtung vom Strang weg begrenzt ist.Each cooling plate 9 can be moved in the direction normal to the strand surface by means of an actuator 21, both towards the strand surface and away from the strand surface. The actuator is designed as a double-acting hydraulic cylinder arranged with its longitudinal axis 22 parallel to the line axis 23, which is articulated both with its articulated eye 24 arranged on the cylinder and with its articulated eye 25 provided on the piston by means of bolts 26 each with the longer arm 27 of an angle lever 28 is. Each angle lever 28 is pivotally mounted on the aftercooler by means of a fixed bolt 29. The short arm 30 of each angle lever is connected in an articulated manner to a bracket 31 screwed onto the cooling plate 9, whereby a bolt 32 is also used for the connection, but this has a play 33 with respect to the bracket 31, so that the angle lever 28 can be easily moved. The movement of a cooling plate 9 towards the strand surface is limited by a stop 34, which is provided on a flange plate 10 of the aftercooler. Each stop 34 interacts with an angle lever 29. When a cooling plate 9 is released, stops on the rear side of the cooling plate also come into contact with the angle lever 28, so that the movement of the cooling plate 9 in the direction away from the strand is also limited.

Die Funktion der Einrichtung ist folgende:

  • Dadurch, daß für jeden Wandteil, d.h. jede Kühlplatte 9, ein eigenes, einziges Stellgerät 21 vorgesehen ist, welches über die Bewegungsrichtung 22 dieses Stellgerätes 21, die parallel zur Stranglängsachse 23 gerichtet ist,in Richtung etwa normal zur Stranglängsachse 23 umlenkende Einrichtungen 28 mit dem Ein- 35 und Auslaufende 36 eines Wandteiles 9 verbunden ist, wird eine gleichmäßige Anstellkraft über die gesamte Länge des Wandteiles erzwungen.Damit ist auch ein gleichmäßiger Verschleiß der Graphitplatten 15 über die Länge der Wandteile 9 gewährleistet.
The function of the facility is as follows:
  • Characterized in that for each wall part, that is, each cooling plate 9, a separate, single actuating device 21 is provided which, via the direction of movement 22 of this actuating device 21, which is directed parallel to the longitudinal axis 23, in the direction approximately normal to the longitudinal axis 23 deflecting devices 28 with the An inlet 35 and outlet end 36 of a wall part 9 is connected, a uniform contact force is forced over the entire length of the wall part. This also ensures uniform wear of the graphite plates 15 over the length of the wall parts 9.

Durch Einstellen eines höheren hydraulischen Druckes in den Zylindern 21 der unteren Kühlplatten kann das Eigengewicht des Stranges und der Kühlplatten 9 ausgeglichen werden. Dadurch kann eine gleichmäßige Abstützung des Stranges erreicht werden. Anstelle des unterschiedlichen hydraulischen Druckes könnten auch in den Zylindern 21 oder am Hebelmechanismus 28 angeordnete Federn zum Einsatz kommen.By setting a higher hydraulic pressure in the cylinders 21 of the lower cooling plates, the dead weight of the strand and the cooling plates 9 can be compensated. This enables the strand to be supported evenly. Instead of the different hydraulic pressure, springs arranged in the cylinders 21 or on the lever mechanism 28 could also be used.

Zweckmäßig wird der Druck in den Zylindern 21 (vorteilhafterweise automatisch) dem ferrostatischen Druck im Strangsumpf und an andere Gießparameter, wie beispielsweise Ausziehgeschwindigkeit und Oszillierhab des Stranges entsprechend, auf einen optimalen Wert eingestellt, so daß die Stützund Kühlwrkung der Kühlplatten 9 bie möglichst geringer Reibung optimiert werden.The pressure in the cylinders 21 is expediently (advantageously automatically) adjusted to the ferrostatic pressure in the strand sump and to other casting parameters, such as pull-out speed and oscillation of the strand, to an optimal value, so that the support and cooling effect of the cooling plates 9 is optimized with as little friction as possible will.

Infolge der Anordnung der Hydraulikzylinder 21 parallel zur Stranglängsachse 23 ergeben sich äußerst günstige Platzverhältnisse, und es ist möglich, die Stranggießkokille 3 auch für Mehrfachstranggießan-lagen zu verwenden, wobei die Stränge eng benachbart geführt werden können.As a result of the arrangement of the hydraulic cylinders 21 parallel to the longitudinal axis 23 of the strand, extremely favorable space conditions result, and it is possible to use the continuous casting mold 3 also for multiple continuous casting plants, it being possible for the strands to be guided closely adjacent to one another.

Mit der beschriebenen Einrichtung ist es möglich, die Kühlplatten 9 vom Strang abzuheben (zu lüften), was beim Einfädeln des Anfahrstranges in die Kokille von Vorteil ist. Die empfindlichen Graphitplatten werden dadurch bei diesem Vorgang vor einer Beschädigung bewahrt.With the device described, it is possible to lift the cooling plates 9 off the strand (to air them), which is advantageous when threading the starting strand into the mold. This protects the sensitive graphite plates from damage during this process.

In Fig. 4 ist eine weitere Ausführungsform dargestellt, bei der die die Bewegungsrichtung eines Zylinders umlenkende Einrichtung von einer in einer bogenförmigen, sich etwa um einen Zentriwinkel von 90° erstreckenden, starr am Nachkühler montierten Bogenführung 37 gebildet ist, innerhalb der eine aus aneinander gelenkten Laschen 38 gebildete Kette 39 geführt ist. Der doppeltwirkende Zylinder 21 ist einerseits mit seinem Zylinder und anderseits mit seinem Kolben an eine solche Kette 39 angelenkt. An den Enden der Ketten 39 sind am Ein- 35 bzw. Auslaufende 36 jedes Wandteiles 9 des Nachkühlers befestigte Stützglieder 40 angelenkt.4 is another embodiment Shown in which the device deflecting the direction of movement of a cylinder is formed by an arcuate guide 37 which is mounted in an arcuate, approximately 90 ° central angle and is rigidly mounted on the aftercooler and within which a chain 39 formed from link plates 38 which are articulated to one another is guided. The double-acting cylinder 21 is articulated on the one hand with its cylinder and on the other hand with its piston on such a chain 39. At the ends of the chains 39, support members 40 are hinged to the inlet 35 and outlet end 36 of each wall part 9 of the aftercooler.

Claims (8)

1. A horizontal continuous casting mould (3), in particular for multiple-strand casting plants, comprising a first mould section (6) forming the strand cross-section and at least one second mould section (7, 8) following upon the first one in the strand travelling direction and equipped with wall parts (9) supporting the strand surface and getting into contact therewith, which wall parts are pressable at the strand surface by adjustment means (21), characterized in that the adjustment means (21) are arranged with their longitudinal axes (22) parallel to the longitudinal axis (23) of the strand, and that each adjustment means (21) is connected with the run-in end (35) and with the run-out end (36) of a wall part (9) by means of an arrangement (28; 37, 39) diverting the moving direction (22) of the adjustment means (21), which is directed parallel to the longitudinal axis (23) of the strand, into a direction approximately perpendicular to the longitudinal axis (23) of the strand.
2. A mould according to claim 1, characterized in that a single adjustment means (21) is provided for each wall part (9).
3. A mould according to claim 1 or 2, characterized in that the arrangement diverting the moving direction is designed as an angle lever (28), which is articulately connected with the adjustment means (21) by one lever arm (27) on the one hand, and with the wall part (9) that is pressable at the strand surface by the second lever arm (30) on the other hand, the angle lever (28) being pivotable about an axis (29) stationary with respect to the mould (Figs. 1 to 3).
4. A mould according to claim 3, characterized in that the lever arm (30) that is hinged to the wall part (9) is connected to this wall part (9) with play (33).
5. A mould according to claim 4, characterized in that each of the wall parts (9) pressable at the strand surface is guided on a stationary stand part (17) of the mould (3) by means of a guide (16), perpendicular to the longitudinal axis (23) of the strand.
6. A mould according to claim 4 or 5, characterized in that each of the wall parts (9) pressable at the strand surface is mounted on a stationary stand part (16) of the mould by means of an articulation bearing (18).
7. A mould according to claims 1 to 6, characterized in that the adjustment means (21) are designed as doubleacting pressure medium cylinders.
8. A mould according to claims 1 or 2 and 5 to 7, respectively, characterized in that the arrangement diverting the moving direction is formed by a chain (39) that is movable in a guide (37) shaped like an arc over a quarter of a circle and is comprised of links (38) hinged to each other, which chain is fastened to the wall part (9) on the one hand, and to the adjustment means (21) on the other hand (Fig. 4).
EP82890127A 1981-10-09 1982-09-13 Continuous-casting mould Expired EP0077315B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT4341/81 1981-10-09
AT0434181A AT374386B (en) 1981-10-09 1981-10-09 CONTINUOUS CHOCOLATE

Publications (3)

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EP0077315A2 EP0077315A2 (en) 1983-04-20
EP0077315A3 EP0077315A3 (en) 1983-09-14
EP0077315B1 true EP0077315B1 (en) 1986-03-19

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EP82890127A Expired EP0077315B1 (en) 1981-10-09 1982-09-13 Continuous-casting mould

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US (1) US4541478A (en)
EP (1) EP0077315B1 (en)
JP (1) JPS5870945A (en)
AT (1) AT374386B (en)
CA (1) CA1195085A (en)
DE (1) DE3269996D1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4774996A (en) * 1986-09-29 1988-10-04 Steel Casting Engineering, Ltd. Moving plate continuous casting aftercooler
WO1991017007A1 (en) * 1990-05-09 1991-11-14 Nippon Steel Corporation Horizontal continuous casting method and apparatus therefor
DE69131792T2 (en) * 1990-08-09 2000-05-31 Kawasaki Heavy Ind Ltd Process and device for continuous casting
EP0492176B1 (en) * 1990-11-29 1997-02-12 Kawasaki Jukogyo Kabushiki Kaisha Horizontal continuous casting apparatus with adjustable mold
AT407845B (en) * 1999-01-28 2001-06-25 Thoeni Industriebetriebe Gmbh DEVICE FOR HORIZONTAL CONTINUOUS STRIP CASTING
EP1941959B1 (en) * 2002-03-29 2009-08-05 Honda Giken Kogyo Kabushiki Kaisha Thixocasting process
US7028750B2 (en) * 2003-12-11 2006-04-18 Novelis, Inc. Apparatus and method for horizontal casting and cutting of metal billets
CN103056335B (en) * 2012-12-27 2015-12-23 江苏三环实业股份有限公司 Gravity extruded type. g., lead tape casting machine

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GB761401A (en) * 1954-05-17 1956-11-14 Rossi Irving Device for use in the art of continuous casting of metals
DE1758543B1 (en) * 1968-06-24 1971-05-06 Ural Sawod Tyaschelogo Mash Im MOLD FOR CONTINUOUS METAL CASTING PLANT
CH507757A (en) * 1970-03-10 1971-05-31 Concast Ag Plate mold for continuous casting
CH508432A (en) * 1970-03-25 1971-06-15 Concast Ag Adjustable plate mold for continuous casting
CH602223A5 (en) * 1976-12-30 1978-07-31 Concast Ag
AT374127B (en) * 1978-06-14 1984-03-26 Voest Alpine Ag PLATE CHOCOLATE FOR CHANGING THE STRAND CROSS-SIZE FORMAT
AT359673B (en) * 1978-07-05 1980-11-25 Voest Alpine Ag METHOD FOR REPAIRING A PLATE CHOCOLATE FOR STEEL CONTINUOUS
FR2445744A1 (en) * 1979-01-04 1980-08-01 Clesid Sa Continuous casting machine for slabs - where narrow mould walls are hinged on plates supporting edges of semi-solid slab
AT373514B (en) * 1979-09-24 1984-01-25 Adamec Alfred CHOCOLATE FOR HORIZONTAL CONTINUOUS CASTING OF METALS, ESPECIALLY STEEL
SU850284A1 (en) * 1979-12-20 1981-07-30 Уральский Ордена Трудового Красногознамени Политехнический Институтим.C.M.Кирова Apparatus for drawing work from continuous casting mould

Also Published As

Publication number Publication date
US4541478A (en) 1985-09-17
CA1195085A (en) 1985-10-15
JPS5870945A (en) 1983-04-27
AT374386B (en) 1984-04-10
DE3269996D1 (en) 1986-04-24
JPS6132104B2 (en) 1986-07-24
EP0077315A2 (en) 1983-04-20
ATA434181A (en) 1983-09-15
EP0077315A3 (en) 1983-09-14

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