EP1558413B1 - Cast iron mould provided with o-shaped frame - Google Patents

Cast iron mould provided with o-shaped frame Download PDF

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Publication number
EP1558413B1
EP1558413B1 EP03770951A EP03770951A EP1558413B1 EP 1558413 B1 EP1558413 B1 EP 1558413B1 EP 03770951 A EP03770951 A EP 03770951A EP 03770951 A EP03770951 A EP 03770951A EP 1558413 B1 EP1558413 B1 EP 1558413B1
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EP
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Prior art keywords
hydraulic cylinders
outer frame
water tank
mould according
mould
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EP03770951A
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German (de)
French (fr)
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EP1558413A1 (en
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Thomas Lamberti
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SMS Siemag AG
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SMS Demag 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
    • B22D11/04—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

Definitions

  • the invention relates to a mold with two opposing, predominantly made of copper coolable broad side walls, between which for the sake of format width adjustment relative to each other displaceable, coolable narrow side walls clamped and provided for the clamping force means, in particular hydraulic cylinders whose tension travel and / or clamping force is adjustable, wherein the mold is arranged with their copper plates of the broad side walls carrying water boxes within a dimensionally stable outer frame.
  • a mold of this type forms with four water-cooled copper plates, comprising two broad sides and two narrow sides, a quadrangular mold, which gives the shape of the steel strip to be produced. It comprises a peripheral outer frame in which water boxes, on which the broadside copper plates are mounted, are slidably mounted. The narrow-side copper plates are mounted on so-called support plates, which are also mounted displaceably in the peripheral outer frame.
  • the design principle of this Kokillenbauart is described in the document DE 197 53 959 A1.
  • the four copper plates are firmly clamped together.
  • one of the two water boxes which carries one of the broadside copper plates, namely the fixed-side water tank, is pressed by means of hydraulic cylinders on stops of the narrow-side copper plates, which are part of the peripheral outer frame. Because the solid side water box is pressed onto stationary stops, this arrangement is referred to as “fixed side” or “fixed side water box”.
  • the second of the two water boxes which carries the other of the two broadside copper plates, namely the so-called Loss water tank, also pressed by means of hydraulic cylinders on the located between the two broadside copper plates narrow-side copper plates.
  • the quadrangular mold is formed for the following casting process.
  • the position of the mold is defined by the fixed side, while the loose side clamps the narrow sides and prevents the mold from opening during the casting process.
  • the required clamping of the narrow sides takes place over the narrow side copper plates.
  • the hydraulic cylinders, which are used for opening and closing and for clamping the copper plates are fixed in the described known type of mold in the peripheral outer frame.
  • an equilibrium of forces arises in the closed state, wherein the outer frame represents a self-contained force system.
  • the so-known design already represents a significant improvement over earlier types of molds.
  • the known embodiment provides that the cylinders, with which the water boxes are moved and clamped in the peripheral outer frame, are mounted in the outer part of the frame.
  • the above-described known cylinder arrangement causes forces to form in the closed, clamped state, of which in each case a force vector is directed outwards. This results in a force impact on the peripheral outer frame, which manifests itself in a change in shape.
  • the hard water tank is pressed on its stop while There is a gap between the Losre water tank and the surrounding outer frame. This gap is required because otherwise the Losre water box could not pinch the narrow side copper plates.
  • the present invention seeks to improve the design of the mold to overcome the aforementioned disadvantages and difficulties and to realize a simple and overall more cost-effective design of the same without fundamentally changing the operating principle of the mold.
  • the fixed-side hydraulic cylinders are now mounted in the inner part of the outer frame and no longer visible from the outside. In this case, no more hydraulic cylinders are mounted in the outer circumferential part of the O-frame.
  • the invention provides for hydraulic cylinders to be internally mounted in the 0-frame for the fixed side water box and hydraulic cylinders in the loose side water box, the water boxes are pulled into their positions under load instead of being pressed.
  • the fixed side water box is pulled by the fixed side hydraulic cylinders against the stop. The result is an equal, oppositely directed reaction force.
  • the Loss water tank is pulled by the Loss hydraulic cylinders against the narrow-side copper plates and there is an equally large, oppositely directed reaction force.
  • a self-contained system of forces is realized that is in equilibrium.
  • the now inwardly directed reaction forces are absorbed between the components as compressive stresses; they are no longer absorbed by the outer frame and therefore cause no deformation of the outer frame.
  • the number of fixed-side hydraulic cylinders could be reduced from four to two. This can be realized without restriction of the function, and the further advantage of this measure is the advantageous use of the limited space inside the peripheral outer frame.
  • the Loss water tank is advantageously pulled by four hydraulic cylinders in position.
  • the known embodiment of the mold according to the prior art provides, as shown in Figures 1 to 3, that the hydraulic cylinders 3a, 5a with which the water boxes 2a, 4a are moved and clamped in the peripheral outer frame 1a, mounted in the outer part of the frame 1a are.
  • the water boxes carry the broadside copper plates of the mold.
  • For closing and clamping the water tanks and thus the chill plates pressure forces are built up by means of the hydraulic cylinders 3a, 5a, which are collected in the peripheral outer frame 1a.
  • the known cylinder arrangement causes forces pairs to form in the closed, clamped state, of which in each case a force vector is directed outwards, as shown in FIG. Figure 2 and the sectional view through the clamping plane in Figure 3 shows how the fixed side water box 2a is pressed to its stop on the bridge element 6a of the frame, while there is a gap between the loose side water box 4a and the peripheral outer frame 1a, which is required because otherwise the Loss-water box 4a would not pinch the narrow-side copper plates 6. Because the hydraulic cylinders 3a, 5a are arranged outside in the O-frame 1a, the water boxes 2a, 4a are pressed into their positions.
  • the fixed-side water tank 2a is pressed against the stop by the fixed-side hydraulic cylinders 3a; the loose side water box 4a is pressed against the narrow side copper plates 6 by the loose side hydraulic cylinders 5a.
  • outward reaction forces are absorbed by the outer frame 1a and cause a deformation of the same.
  • the present invention improves the mold described above in the manner explained below:
  • FIGS. 4 to 6 it is shown that with the invention the arrangement of the hydraulic cylinders 3n, 5n is changed such that the water boxes 2n, 4n are no longer pressed into position from the outside, but that the solid side water box 2n is pressed from the inside in the outer frame 1a z.
  • cylinders 3n mounted in the bridge member 6n are pulled into position and the loose side header 4n is pulled into position by cylinders 5n mounted in the loose side header 4n.
  • FIGS. 4 to 6 it is shown that with the invention the arrangement of the hydraulic cylinders 3n, 5n is changed such that the water boxes 2n, 4n are no longer pressed into position from the outside, but that the solid side water box 2n is pressed from the inside in the outer frame 1a z.
  • cylinders 3n mounted in the bridge member 6n are pulled into position and the loose side header 4n is pulled into position by cylinders 5n mounted in the loose side header 4n.
  • FIGS. 4 to 6 it is shown that with the invention the arrangement of
  • the hydraulic cylinders 3n are internally mounted in the O-frame 1a and the hydraulic cylinders 5n are mounted in the loose-side water box 4n, the water boxes 2n, 4n are pulled into their positions and no longer pressed.
  • the fixed-side water tank 2n is pulled by two fixed-side hydraulic cylinders 3n against the stop 6n.
  • the loose-side water tank 4n is pulled by four loose-side hydraulic cylinders 5n against the narrow-side copper plates 6, as shown particularly in FIG. 5 and FIG.
  • the now inwardly directed reaction forces are absorbed between the components as compressive stresses; they are no longer absorbed by the outer frame 1n and thus cause no deformation of the same.
  • the number of fixed-side hydraulic cylinders 3n could be reduced without restriction. ( Figure 6)
  • the mold is significantly improved constructively significantly by the water boxes 2, 4 are no longer pressed from the outside in their positions but pulled from the inside into their positions. This ensures that the outer part of the peripheral outer frame 1 remains free of forces and deformation. Thus, a lighter, yet much more stable structures can be realized for the outer frame. In this case, the function of the mold is advantageously not changed, because in the clamped state still forms a self-contained force system.
  • the other design features of the mold according to the invention are described in the subclaims.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Braking Arrangements (AREA)

Abstract

Mold has a water tank (2n) on the fixed side which is moved by hydraulic cylinders (3n) arranged within an outer frame (1n), and a water tank (4n) on the detachable side which is moved by hydraulic cylinders (5n) arranged inside.

Description

Die Erfindung betrifft eine Kokille mit zwei einander gegenüberliegenden, überwiegend aus Kupfer bestehenden kühlbaren Breitseitenwänden, zwischen welchen zwecks Formatbreiteneinstellung relativ zu einander verschiebbare, kühlbare Schmalseitenwände einspannbar gehalten und für deren Einspannung Kraftmittel, insbesondere Hydraulikzylinder vorgesehen sind, deren Spannweg und/oder Spannkraft einstellbar ist, wobei die Kokille mit ihren die Kupferplatten der Breitseitenwände tragenden Wasserkästen innerhalb eines formstabilen Außenrahmens angeordnet ist.The invention relates to a mold with two opposing, predominantly made of copper coolable broad side walls, between which for the sake of format width adjustment relative to each other displaceable, coolable narrow side walls clamped and provided for the clamping force means, in particular hydraulic cylinders whose tension travel and / or clamping force is adjustable, wherein the mold is arranged with their copper plates of the broad side walls carrying water boxes within a dimensionally stable outer frame.

Eine Kokille dieser Bauart bildet mit vier wassergekühlten Kupferplatten, umfassend zwei Breitseiten und zwei Schmalseiten, eine viereckige Gussform, die dem zu erzeugenden Stahlband seine Form gibt. Sie umfasst einen umlaufenden Außenrahmen, in welchem Wasserkästen, auf denen die Breitseiten-Kupferplatten montiert sind, verschiebbar gelagert sind. Die Schmalseiten-Kupferplatten sind auf sogenannten Stützplatten montiert, die ebenfalls in dem umlaufenden Außenrahmen verschiebbar gelagert sind. Das Konstruktionsprinzip dieser Kokillenbauart ist in dem Dokument DE 197 53 959 A1 beschrieben.A mold of this type forms with four water-cooled copper plates, comprising two broad sides and two narrow sides, a quadrangular mold, which gives the shape of the steel strip to be produced. It comprises a peripheral outer frame in which water boxes, on which the broadside copper plates are mounted, are slidably mounted. The narrow-side copper plates are mounted on so-called support plates, which are also mounted displaceably in the peripheral outer frame. The design principle of this Kokillenbauart is described in the document DE 197 53 959 A1.

Während des Gießprozesses werden die vier Kupferplatten fest miteinander verspannt. Zu diesem Zweck wird zunächst einer der beiden Wasserkästen, der eine der Breitseiten-Kupferplatten trägt, nämlich der Festseiten-Wasserkasten, mit Hilfe von Hydraulikzylindern auf Anschläge der Schmalseiten-Kupferplatten gedrückt, die Bestandteil des umlaufenden Außenrahmens sind. Weil dabei der Festseiten-Wasserkasten auf ortsfeste Anschläge gedrückt wird, wird diese Anordnung als "Festseite" bzw. "Festseiten-Wasserkasten" bezeichnet.During the casting process, the four copper plates are firmly clamped together. For this purpose, one of the two water boxes, which carries one of the broadside copper plates, namely the fixed-side water tank, is pressed by means of hydraulic cylinders on stops of the narrow-side copper plates, which are part of the peripheral outer frame. Because the solid side water box is pressed onto stationary stops, this arrangement is referred to as "fixed side" or "fixed side water box".

Anschließend wird der zweite der beiden Wasserkästen, der die andere der beiden Breitseiten-Kupferplatten trägt, nämlich der sogenannte Losseiten-Wasserkasten, ebenfalls mit Hilfe von Hydraulikzylindern auf die zwischen den beiden Breitseiten-Kupferplatten befindlichen Schmalseiten-Kupferplatten gedrückt. Auf diese Weise wird schließlich die viereckige Gussform für den folgenden Gießprozess ausgebildet.Subsequently, the second of the two water boxes, which carries the other of the two broadside copper plates, namely the so-called Losseiten water tank, also pressed by means of hydraulic cylinders on the located between the two broadside copper plates narrow-side copper plates. In this way, finally, the quadrangular mold is formed for the following casting process.

Bei dieser Kokillen-Bauart wird die Lage der Gussform durch die Festseite definiert, während die Losseite die Schmalseiten einklemmt und verhindert, dass sich die Gussform während des Gießprozesses öffnet. Die erforderliche Klemmung der Schmalseiten findet dabei über die Schmalseiten-Kupferplatten statt. Die Hydraulikzylinder, welche zum Öffnen und Schließen sowie zum Klemmen der Kupferplatten dienen, sind bei der beschriebenen bekannten Bauart einer Kokille in dem umlaufenden Außenrahmen befestigt. Dadurch stellt sich im geschlossenen Zustand ein Kräftegleichgewicht ein, wobei der Außenrahmen ein in sich geschlossenes Kräftesystem darstellt. Die so bekannte Bauart stellt bereits gegenüber früheren Bauarten von Kokillen eine wesentliche Verbesserung dar.
Dabei sieht die bekannte Ausführung vor, dass die Zylinder, mit denen die Wasserkästen im umlaufenden Außenrahmen bewegt und geklemmt werden, im Außenteil des Rahmens angebracht sind. Zum Schließen und Klemmen werden daher mit Hilfe der Hydraulikzylinder Druckkräfte aufgebracht, die nach außen gerichtete Reaktionskräfte erzeugen und im umlaufenden Außenrahmen aufgefangen werden müssen. Eine gängige Bezeichnung für diese Bauart der Kokille lautet "O-Rahmen-Kokille", weil der umlaufende, geschlossene Außenrahmen, von oben betrachtet, wie ein eckiges "O" aussieht.In this mold design, the position of the mold is defined by the fixed side, while the loose side clamps the narrow sides and prevents the mold from opening during the casting process. The required clamping of the narrow sides takes place over the narrow side copper plates. The hydraulic cylinders, which are used for opening and closing and for clamping the copper plates are fixed in the described known type of mold in the peripheral outer frame. As a result, an equilibrium of forces arises in the closed state, wherein the outer frame represents a self-contained force system. The so-known design already represents a significant improvement over earlier types of molds.
The known embodiment provides that the cylinders, with which the water boxes are moved and clamped in the peripheral outer frame, are mounted in the outer part of the frame. For closing and clamping pressure forces are therefore applied by means of the hydraulic cylinder, which generate outward reaction forces and must be collected in the peripheral outer frame. A common name for this type of mold is "O-frame mold", because the circumferential, closed outer frame, viewed from above, looks like a square "O".

Die vorbeschriebene bekannte Zylinderanordnung bewirkt, dass sich im geschlossenen, geklemmten Zustand Kräfte ausbilden, von welchen jeweils ein Kraftvektor nach außen gerichtet ist. Hierdurch ergibt sich eine Kraftauswirkung auf den umlaufenden Außenrahmen, die sich in einer Formänderung bemerkbar macht. Der Festseiten-Wasserkasten wird auf seinen Anschlag gedrückt, während sich zwischen dem Losseiten-Wasserkasten und dem umlaufenden Außenrahmen ein Spalt befindet. Dieser Spalt ist erforderlich, weil andernfalls der Losseiten-Wasserkasten nicht die Schmalseiten-Kupferplatten einklemmen könnte.The above-described known cylinder arrangement causes forces to form in the closed, clamped state, of which in each case a force vector is directed outwards. This results in a force impact on the peripheral outer frame, which manifests itself in a change in shape. The hard water tank is pressed on its stop while There is a gap between the Losseiten water tank and the surrounding outer frame. This gap is required because otherwise the Losseiten water box could not pinch the narrow side copper plates.

Weil beim vorgenannten Stand der Technik die Hydraulikzylinder außen im 0-Rahmen angebracht sind, werden die Wasserkästen in ihre Position gedrückt. Dabei wird der Festseiten-Wasserkasten von den Festseiten-Hydraulikzylindern gegen einen Anschlag gedrückt und es entsteht eine gleich große, nach außen gerichtete Reaktionskraft. Der Losseiten-Wasserkasten wird von den Losseiten-Hydraulikzylindern gegen die Schmalseiten-Kupferplatten gedrückt und es entsteht eine gleich große, nach außen gerichtete Reaktionskraft. Weil es sich bei dieser Anordnung um einen geschlossenen Außenrahmen handelt, ist somit ein in sich geschlossenes Kräftesystem entstanden, welches sich im Gleichgewicht befindet. Die nach außen gerichteten Reaktionskräfte werden dabei vom Außenrahmen aufgenommen und bewirken daher eine Verformung dieses Außenrahmens. Dieser muss infolgedessen außerordentlich steif ausgeführt sein, wodurch die Bauart der Kokille aufwendig und mit erheblichem Aufwand an Material und Gewicht konstruiert sein muss.Because in the aforementioned prior art, the hydraulic cylinders are mounted outside in the 0-frame, the water boxes are pressed into position. In this case, the fixed-side water tank is pressed by the fixed-side hydraulic cylinders against a stop and there is an equally large, outward reaction force. The Losseiten water tank is pressed by the Losseiten hydraulic cylinders against the narrow side copper plates and there is an equal, outward reaction force. Because this arrangement is a closed outer frame, a self-contained force system has been created, which is in equilibrium. The outward reaction forces are absorbed by the outer frame and therefore cause a deformation of this outer frame. As a result, this must be made extremely stiff, whereby the design of the mold must be designed consuming and with considerable effort in terms of material and weight.

Ausgehend vom vorgenannten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, die Bauart der Kokille zu verbessern, um die vorgenannten Nachteile und Schwierigkeiten zu überwinden und ohne grundlegende Änderung des Funktionsprinzips der Kokille eine leichtere und insgesamt kostengünstigere Konstruktion derselben zu verwirklichen.Based on the aforementioned prior art, the present invention seeks to improve the design of the mold to overcome the aforementioned disadvantages and difficulties and to realize a simple and overall more cost-effective design of the same without fundamentally changing the operating principle of the mold.

Zur Lösung der Aufgabe wird bei einer Kokille der im Oberbegriff von Anspruch 1 genannten Art mit der Erfindung vorgeschlagen, dass der Festseiten-Wasserkasten von innerhalb des Außenrahmens angeordneten Hydraulikzylindern in seine Position bewegbar und der Losseiten-Wasserkasten von in seinem Innern angeordneten Hydraulikzylindern ebenfalls in seine Position bewegbar angeordnet wird.To solve the problem of a mold referred to in the preamble of claim 1 is proposed with the invention that the fixed side water tank from within the outer frame arranged hydraulic cylinders movable into position and the Losseiten water tank of arranged in its interior hydraulic cylinders also in his Position is arranged movable.

Die Festseiten-Hydraulikzylinder sind nunmehr im Innenteil des Außenrahmens angebracht und von außen nicht mehr sichtbar. Dabei sind im außen umlaufenden Teil des O-Rahmens keine Hydraulikzylinder mehr angebracht. An der Wirkungsweise des Gesamtaufbaus der Konstruktion wurde dabei nichts geändert, nach wie vor hat der Festseiten-Wasserkasten Kontakt zu den Anschlägen, während der Losseiten-Wasserkasten die Schmalseiten-Kupferplatten einklemmt und daher der erforderliche Spalt zwischen Losseiten-Wasserkasten und Außenrahmen erhalten bleibt.
Weil mit der Erfindung vorgesehen ist, dass Hydraulikzylinder innen im 0-Rahmen für den Festseiten-Wasserkasten und Hydraulikzylinder im Losseiten-Wasserkasten angebracht sind, werden die Wasserkästen unter Last in ihre Positionen gezogen, statt gedrückt zu werden.
Der Festseiten -Wasserkasten wird von den Festseiten-Hydraulikzylindern -gegen den Anschlag gezogen. Es entsteht eine gleich große, entgegengesetzt gerichtete Reaktionskraft. Der Losseiten-Wasserkasten wird von den Losseiten-Hydraulikzylindern gegen die Schmalseiten-Kupferplatten gezogen und es entsteht dabei eine gleich große, entgegengesetzt gerichtete Reaktionskraft. Auch hierdurch ist ein in sich geschlossenes Kräftesystem verwirklicht, dass sich in sich im Gleichgewicht befindet. Die nunmehr nach innen gerichteten Reaktionskräfte werden zwischen den Bauteilen als Druckspannungen aufgenommen; sie werden nicht mehr vom Außenrahmen aufgenommen und bewirken daher auch keine Verformung des Außenrahmens.The fixed-side hydraulic cylinders are now mounted in the inner part of the outer frame and no longer visible from the outside. In this case, no more hydraulic cylinders are mounted in the outer circumferential part of the O-frame. Nothing has changed in the operation of the overall structure of the construction, still has the solid water tank contact with the attacks, while the Losseiten water tank clamps the narrow-side copper plates and therefore the required gap between Losseiten-water tank and outer frame is maintained.
Because the invention provides for hydraulic cylinders to be internally mounted in the 0-frame for the fixed side water box and hydraulic cylinders in the loose side water box, the water boxes are pulled into their positions under load instead of being pressed.
The fixed side water box is pulled by the fixed side hydraulic cylinders against the stop. The result is an equal, oppositely directed reaction force. The Losseiten water tank is pulled by the Losseiten hydraulic cylinders against the narrow-side copper plates and there is an equally large, oppositely directed reaction force. Here too, a self-contained system of forces is realized that is in equilibrium. The now inwardly directed reaction forces are absorbed between the components as compressive stresses; they are no longer absorbed by the outer frame and therefore cause no deformation of the outer frame.

Infolgedessen konnte vorteilhafterweise die Anzahl der Festseiten-Hydraulikzylinder von vier auf zwei reduziert werden. Dies kann ohne Einschränkung der Funktion realisiert werden, und der weitere Vorteil dieser Maßnahme besteht in der vorteilhaften Nutzung der beengten Platzverhältnisse im Inneren des umlaufenden Außenrahmens. Der Losseiten-Wasserkasten wird vorteilhafterweise von vier Hydraulikzylindern in seine Position gezogen.As a result, advantageously, the number of fixed-side hydraulic cylinders could be reduced from four to two. This can be realized without restriction of the function, and the further advantage of this measure is the advantageous use of the limited space inside the peripheral outer frame. The Losseiten water tank is advantageously pulled by four hydraulic cylinders in position.

Im Folgenden wird eine Kokille vom Stand der Technik und im Vergleich zu dieser eine Kokille nach der Erfindung in Zeichnungen dargestellt und anhand der zugehörigen Beschreibungen näher erläutert.In the following, a mold of the prior art and compared to this a mold according to the invention is shown in drawings and explained in more detail with reference to the accompanying descriptions.

Es zeigen:

Figur 1
in perspektivischer Darstellung eine O-Rahmen-Kokille bisheriger Bauart, beide Wasserkästen geöffnet;
Figur 2
die O-Rahmen-Kokille gemäß Figur 1, beide Wasserkästen geschlossen;
Figur 3
die O-Rahmen-Kokille bisheriger Bauart in einem horizontalen Schnitt, aus dem die Anordnung der Hydraulikzylinder im Außenrahmen mit den von diesen verursachten Kraftvektoren hervorgeht;
Figur 4
in perspektivischer Darstellung eine O-Rahmen-Kokille nach der Erfindung, beide Wasserkästen geöffnet;
Figur 5
die O-Rahmen-Kokille gemäß Figur 4 mit beidseitig geschlossenen Wasserkästen;
Figur 6
die O-Rahmen-Kokille gemäß Fig. 4 und 5 mit der erfindungsgemäßen Anordnung der Hydraulikzylinder, beide Wasserkästen geschlossen, in einem horizontalen Schnitt mit den zugeordneten Kraftvektoren.
Show it:
FIG. 1
in perspective view an O-frame mold of previous design, both water boxes open;
FIG. 2
the O-frame mold according to Figure 1, both water boxes closed;
FIG. 3
the previous design O-frame mold in a horizontal section, showing the arrangement of the hydraulic cylinder in the outer frame with the force vectors caused by these;
FIG. 4
in perspective view of an O-frame mold according to the invention, both water boxes open;
FIG. 5
the O-frame mold according to Figure 4 with water boxes closed on both sides;
FIG. 6
the O-frame mold according to FIGS. 4 and 5 with the inventive arrangement of the hydraulic cylinder, both water tanks closed, in a horizontal section with the associated force vectors.

Die bekannte Ausführung der Kokille nach dem Stand der Technik sieht vor, wie dies die Figuren 1 bis 3 zeigen, dass die Hydraulikzylinder 3a, 5a mit denen die Wasserkästen 2a, 4a im umlaufenden Außenrahmen 1a bewegt und geklemmt werden, im Außenteil des Rahmens 1a angebracht sind. Die-Wasserkästen tragen die Breitseiten-Kupferplatten der Kokille. Zum Schließen und Klemmen der Wasserkästen und damit der Kokillenplatten werden mit Hilfe der Hydraulikzylinder 3a, 5a Druckkräfte aufgebaut, die im umlaufenden Außenrahmen 1a aufgefangen werden.The known embodiment of the mold according to the prior art provides, as shown in Figures 1 to 3, that the hydraulic cylinders 3a, 5a with which the water boxes 2a, 4a are moved and clamped in the peripheral outer frame 1a, mounted in the outer part of the frame 1a are. The water boxes carry the broadside copper plates of the mold. For closing and clamping the water tanks and thus the chill plates pressure forces are built up by means of the hydraulic cylinders 3a, 5a, which are collected in the peripheral outer frame 1a.

Die bekannte Zylinderanordnung bewirkt, dass sich im geschlossenen geklemmten Zustand Kräftepaare ausbilden, von denen jeweils ein Kraftvektor nach außen gerichtet ist, wie dies die Figur 3 zeigt.
Figur 2 sowie die Schnittdarstellung durch die Klemmebene in Figur 3 zeigt, wie der Festseiten-Wasserkasten 2a auf seinen Anschlag am Brückenelement 6a des Rahmens gedrückt wird, während sich zwischen dem Losseiten-Wasserkasten 4a und dem umlaufenden Außenrahmen 1a ein Spalt befindet, der erforderlich ist, weil andernfalls der Losseiten-Wasserkasten 4a nicht die Schmalseiten-Kupferplatten 6 einklemmen würde.
Weil die Hydraulikzylinder 3a, 5a außen im O-Rahmen 1a angeordnet sind, werden die Wasserkästen 2a, 4a in ihre Positionen gedrückt. Dabei wird der Festseiten-Wasserkasten 2a von den Festseiten-Hydraulikzylindern 3a gegen den Anschlag gedrückt; der Losseiten-Wasserkasten 4a wird von den Losseiten-Hydraulikzylindern 5a gegen die Schmalseiten-Kupferplatten 6 gedrückt.
Dabei werden nach außen gerichtete Reaktionskräfte vom Außenrahmen 1a aufgenommen und bewirken ein Verformung desselben.The known cylinder arrangement causes forces pairs to form in the closed, clamped state, of which in each case a force vector is directed outwards, as shown in FIG.
Figure 2 and the sectional view through the clamping plane in Figure 3 shows how the fixed side water box 2a is pressed to its stop on the bridge element 6a of the frame, while there is a gap between the loose side water box 4a and the peripheral outer frame 1a, which is required because otherwise the Losseiten-water box 4a would not pinch the narrow-side copper plates 6.
Because the hydraulic cylinders 3a, 5a are arranged outside in the O-frame 1a, the water boxes 2a, 4a are pressed into their positions. At this time, the fixed-side water tank 2a is pressed against the stop by the fixed-side hydraulic cylinders 3a; the loose side water box 4a is pressed against the narrow side copper plates 6 by the loose side hydraulic cylinders 5a.
In this case, outward reaction forces are absorbed by the outer frame 1a and cause a deformation of the same.

Die vorliegende Erfindung verbessert die oben beschriebene Kokille in der nachfolgend erläuterten Art und Weise:The present invention improves the mold described above in the manner explained below:

In den Figuren 4 bis 6 wird gezeigt, dass mit der Erfindung die Anordnung der Hydraulikzylinder 3n, 5n so geändert wird, dass die Wasserkästen 2n, 4n, nicht mehr von außen in ihre Position gedrückt werden, sondern dass der Festseiten-Wasserkasten 2n von innen im Außenrahmen 1a z. B. im Brückenelement 6n angebrachten Zylindern 3n in seine Position gezogen wird und dass der Losseiten-Wasserkasten 4n von im Losseiten-Wasserkasten 4n angebrachten Zylindern- 5n-in seine Position gezogen wird. Wie dies insbesondere die Abbildung Figur 6 im dargestellten Konstruktionsprinzip verdeutlicht.In FIGS. 4 to 6 it is shown that with the invention the arrangement of the hydraulic cylinders 3n, 5n is changed such that the water boxes 2n, 4n are no longer pressed into position from the outside, but that the solid side water box 2n is pressed from the inside in the outer frame 1a z. For example, cylinders 3n mounted in the bridge member 6n are pulled into position and the loose side header 4n is pulled into position by cylinders 5n mounted in the loose side header 4n. As illustrated in particular the figure Figure 6 in the illustrated design principle.

Dabei sind nunmehr die Festseiten-Hydraulikzylinder 3n im Innenteil des Außenrahmens 1 n angebracht und von außen nicht mehr sichtbar. Im außen umlaufenden Teil des O-Rahmens 1 n sind nunmehr keine Hydraulikzylinder angebracht. Die Abbildung Figur 5 zeigt die Kokille neuer Bauart mit geschlossenen Wasserkästen 2n, 4n. An der Wirkungsweise des Gesamtaufbaus der Konstruktion wurde nichts geändert: Nach wie vor hat der Festseiten-Wasserkasten 2n Kontakt zu den Anschlägen am Brückenelement 6n, während der Losseiten-Wasserkasten 4n die Schmalseiten-Kupferplatten 6 einklemmt und dabei einen Spalt zwischen Losseiten-Wasserkasten 4n und Außenrahmen 6n beibehält. Weil nach der Erfindung die Hydraulikzylinder 3n innen im O-Rahmen 1a und die Hydraulikzylinder 5n im Losseiten-Wasserkasten 4n angebracht sind, werden die Wasserkästen 2n, 4n in ihre Positionen gezogen und nicht mehr gedrückt. Dabei wird der Festseiten-Wasserkasten 2n von zwei Festseiten-Hydraulikzylindern 3n gegen den Anschlag 6n gezogen. Der Losseiten-Wasserkasten 4n wird von vier Losseiten-Hydraulikzylindern 5n gegen die Schmalseiten-Kupferplatten 6 gezogen, wie dies insbesondere die Figur 5 und Figur 6 deutlich zeigen. Die nunmehr nach innen gerichteten Reaktionskräfte werden zwischen den Bauteilen als Druckspannungen aufgenommen; sie werden nicht mehr vom Außenrahmen 1n aufgenommen und bewirken demnach auch keine Verformung desselben. Dabei konnte auch die Anzahl der Festseiten-Hydraulikzylinder 3n reduziert werden, und zwar ohne einschränkende Funktion. (Figur 6)In this case, now the fixed-side hydraulic cylinders 3n are mounted in the inner part of the outer frame 1n and are no longer visible from the outside. In the outer circumferential part of the O-frame 1 n now no hydraulic cylinders are mounted. The figure Figure 5 shows the mold of new design with closed water boxes 2n, 4n. Nothing has changed in the operation of the overall structure of the construction: still has the solid-water box 2n contact with the stops on the bridge element 6n, while the Losseiten-water box 4n pinches the narrow-side copper plates 6, while a gap between Losseiten-water box 4n and Outer frame 6n maintains. According to the invention, since the hydraulic cylinders 3n are internally mounted in the O-frame 1a and the hydraulic cylinders 5n are mounted in the loose-side water box 4n, the water boxes 2n, 4n are pulled into their positions and no longer pressed. In this case, the fixed-side water tank 2n is pulled by two fixed-side hydraulic cylinders 3n against the stop 6n. The loose-side water tank 4n is pulled by four loose-side hydraulic cylinders 5n against the narrow-side copper plates 6, as shown particularly in FIG. 5 and FIG. The now inwardly directed reaction forces are absorbed between the components as compressive stresses; they are no longer absorbed by the outer frame 1n and thus cause no deformation of the same. At the same time, the number of fixed-side hydraulic cylinders 3n could be reduced without restriction. (Figure 6)

Durch die Erfindung wird mit großem Vorteil die Kokille konstruktiv signifikant verbessert, indem die Wasserkästen 2, 4 nicht mehr von außen in ihre Positionen gedrückt sondern von innen in ihre Positionen gezogen werden. Hierdurch wird erreicht, dass der Außenteil des umlaufenden Außenrahmens 1 kräfte- und verformungsfrei bleibt. Somit kann für den Außenrahmen eine leichtere und dennoch wesentlich stabilere Konstruktionen realisiert werden. Dabei wird vorteilhaft die Funktion der Kokille nicht verändert, denn im geklemmten Zustand bildet sich nach wie vor ein in sich geschlossenes Kräftesystem aus. Die weiteren Konstruktionsmerkmale der erfindungsgemäßen Kokille sind in den Unteransprüchen beschrieben.With the invention, the mold is significantly improved constructively significantly by the water boxes 2, 4 are no longer pressed from the outside in their positions but pulled from the inside into their positions. This ensures that the outer part of the peripheral outer frame 1 remains free of forces and deformation. Thus, a lighter, yet much more stable structures can be realized for the outer frame. In this case, the function of the mold is advantageously not changed, because in the clamped state still forms a self-contained force system. The other design features of the mold according to the invention are described in the subclaims.

Claims (9)

  1. Mould with two mutually opposite coolable wide side walls consisting predominantly of copper, between which there are held, by clamping in place, coolable narrow side walls displaceable relative to one another for the purpose of format width adjustment and for the clamping in place of which there are provided force means, particularly hydraulic cylinders, the clamping travel and/or clamping force of which is adjustable, wherein the mould together with its water tank carrying the copper plates of the wide side walls is arranged within an outer frame of stable shape, characterised in that the fixed-side water tank (2n) is arranged to be movable in its position by hydraulic cylinders (3n) arranged within the outer frame (1n) and the movable-side water tank (4n) is arranged to be movable in its position by hydraulic cylinders (5n) arranged in its interior.
  2. Mould according to claim 1, characterised in that the hydraulic cylinders (3n) of the movable-side water tank (4n) are arranged in the interior space thereof.
  3. Mould according to claim 1 or 2, characterised in that the outer frame (1n) is constructed as a rectangular frame by means of transverse beam elements on end and longitudinal beams connecting in parallel at a spacing.
  4. Mould according to one or more of claims 1 to 3, characterised in that bridge elements (6n) connected with the transverse beams and longitudinal beams to form an outer frame (1 n) closed in itself are arranged in the outer frame (1 n).
  5. Mould according to one or more of claims 1 to 4, characterised in that the hydraulic cylinders (3n) of the fixed-side water tank (2n) are arranged in the bridge elements (6n).
  6. Mould according to one or more of claims 1 to 5, characterised in that devices for adjusting the mould narrow side walls are arranged in the bridge elements (6n) in such a manner that they are disposed in a line with the narrow side walls.
  7. Mould according to one or more of claims 1 to 6, characterised in that the water tanks (2n, 4n) carrying the copper plates are within the outer frame (1 n) and approximately centrally centred relative thereto.
  8. Mould according to one or more of claims 1 to 7, characterised in that at most two hydraulic cylinders (3n) are provided for the fixed-side water tank (2n).
  9. Mould according to one or more of claims 1 to 8, characterised in that four hydraulic cylinders (5n) are provided for the movable-side water tank (4n).
EP03770951A 2002-11-02 2003-09-27 Cast iron mould provided with o-shaped frame Expired - Lifetime EP1558413B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10251021A DE10251021A1 (en) 2002-11-02 2002-11-02 Mold for casting processes has a water tank on the fixed side which is moved by hydraulic cylinders arranged within an outer frame, and a water tank on the detachable side which is moved by hydraulic cylinders arranged inside
DE10251021 2002-11-02
PCT/EP2003/010781 WO2004041462A1 (en) 2002-11-02 2003-09-27 Cast iron mould provided with o-shaped frame

Publications (2)

Publication Number Publication Date
EP1558413A1 EP1558413A1 (en) 2005-08-03
EP1558413B1 true EP1558413B1 (en) 2006-01-04

Family

ID=32115104

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03770951A Expired - Lifetime EP1558413B1 (en) 2002-11-02 2003-09-27 Cast iron mould provided with o-shaped frame

Country Status (5)

Country Link
EP (1) EP1558413B1 (en)
AT (1) ATE314896T1 (en)
AU (1) AU2003280343A1 (en)
DE (2) DE10251021A1 (en)
WO (1) WO2004041462A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010061828A1 (en) 2010-07-28 2012-02-02 Sms Siemag Ag continuous casting
DE102011075065A1 (en) 2011-05-02 2012-11-08 Sms Siemag Ag Square mold for production of steel strip, has movable hydraulic cylinder that is used to perform position displacement of movable water tank so that movable water tank is directly contacted with fixed side water tank

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3833014C2 (en) * 1988-09-29 2001-07-26 Sms Demag Ag Continuous casting mold
DE19753959A1 (en) * 1997-12-05 1999-06-10 Schloemann Siemag Ag Chill with broadside and narrow side adjustment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010061828A1 (en) 2010-07-28 2012-02-02 Sms Siemag Ag continuous casting
WO2012013450A1 (en) 2010-07-28 2012-02-02 Sms Siemag Ag Continuous casting mold
DE102011075065A1 (en) 2011-05-02 2012-11-08 Sms Siemag Ag Square mold for production of steel strip, has movable hydraulic cylinder that is used to perform position displacement of movable water tank so that movable water tank is directly contacted with fixed side water tank

Also Published As

Publication number Publication date
DE10251021A1 (en) 2004-05-19
EP1558413A1 (en) 2005-08-03
AU2003280343A1 (en) 2004-06-07
DE50302138D1 (en) 2006-03-30
WO2004041462A1 (en) 2004-05-21
ATE314896T1 (en) 2006-02-15

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