EP2321075B1 - Strand casting mold for liquid metal, particularly for liquid steel - Google Patents

Strand casting mold for liquid metal, particularly for liquid steel Download PDF

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Publication number
EP2321075B1
EP2321075B1 EP09777692.6A EP09777692A EP2321075B1 EP 2321075 B1 EP2321075 B1 EP 2321075B1 EP 09777692 A EP09777692 A EP 09777692A EP 2321075 B1 EP2321075 B1 EP 2321075B1
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Prior art keywords
channels
mold
continuous casting
copper plates
plates
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EP09777692.6A
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German (de)
French (fr)
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EP2321075A1 (en
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Jörn HOFFMEISTER
Michael Dreis
Dirk Letzel
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SMS Group GmbH
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SMS Group GmbH
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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
    • B22D11/055—Cooling the moulds

Definitions

  • the invention relates to a continuous casting mold for continuously casting a metal strand, in particular a steel strand, each having opposite broad side walls and narrow side walls, wherein at least the broad side walls are equipped with cooling channels.
  • Continuous casting molds are formed, for example, as slab molds, curved molds or Vorblockkokillen.
  • Continuous casting molds for continuous casting of a metal strand in particular a steel strand, are used as slab molds.
  • the molds have mutually opposite broad side walls and clamped between the broad side walls and along the wide side walls transversely to the casting direction arranged, opposite, in the casting direction wedge-shaped narrowing or parallel to each other arranged narrow side walls, wherein the broad side walls have a funnel-shaped or parallel-walled Eing man Scheme extending in the casting direction extends to Kokillenende.
  • the broad sides of the mold can be arranged parallel to each other.
  • the narrow side walls are arranged interchangeable according to the adjusted thickness of the casting to be cast metal strand.
  • WO 03 106073 A2 is a continuous casting mold for liquid metals, in particular for liquid steel, with surrounding of water boxes, the casting cross-section forming parallel, opposing insert plates made of steel and the steel insert plates adjacent cartridge-like copper plates known that limit the casting cavity.
  • end plates for fixing the G confusestrangschreib and / or the G fauxstrangbreite are inserted, which complete the casting cavity at the end faces.
  • coolant passages connecting the inlet to an outlet are provided at the interfaces with the steel insert plates.
  • the thickness of the copper plates in each case between the cooling medium and the copper plate hot side across the width and / or the height is different. As a result, the hot-side temperature can be made uniform over the width of the mold and the significant temperature drop over the mold height below the G fauxador Kunststoffs can be reduced.
  • WO 03/092931 and WO 98/20997 are introduced by introducing different filler pieces in the cooling channels, the cross sections such that correspond to the desired cooling effect.
  • FIG. 1 shows such a curved mold in longitudinal section, relative to the casting direction.
  • a casting cavity 3 from which liquid metal is poured out in the direction of an arrow y.
  • the copper plates 1, 2 are both slightly bent.
  • the copper plate 1 is mounted on the outside of the mold and fixed. On its, the casting cavity 3 facing inside it is bent with a radius R a , while the serving to adjust the thickness of the slab to be cast, mounted on the outside of the mold copper plate 2 is bent on its inside with a radius R i .
  • Both copper plates 1, 2 are equipped with cooling channels 4 and 5, through which a cooling liquid passes.
  • the cooling channels 4, 5 each have a straight course. Their distance from an inner surface 6 or 7 of the copper plate thus changes with height.
  • the distances s a and s i which have the bottoms of the cooling channels with respect to the hot sides of the copper plates 1, 2, are different depending on the height. The following applies: si ⁇ sa.
  • an optimized design of the wall thickness of the casting cavity bounding copper plates is sought, for example, in a curved mold inner and outer copper plates over the entire length from top to bottom with a uniform copper wall thickness and thus a more uniform cooling effect can be provided.
  • a better product quality of the slabs or billets to be cast with this mold and an improvement of the casting process itself is achieved.
  • Both the wide side walls and the narrow side walls can be equipped with cooling channels.
  • the cooling channels are designed as grooves in the outer wall of the casting cavity adjacent plates, in particular of copper plates.
  • the adjacent to the casting cavity copper plates are provided on their outside with recesses, grooves, channels or the like., To allow the passage of a cooling liquid therethrough.
  • the copper plates are covered by further plates, ie cover plates, through which the recesses, grooves, channels, etc. are covered, so that they form closed conduits which have only an inlet and an outlet at the top and bottom, so that a cooling fluid can flow through them.
  • the cooling channels have the same distance to the casting cavity over their entire length; Alternatively, however, it may also be provided, for reasons of changing the heat transfer over the length of the plates, that the distance between the channels and the casting cavity changes in order to set a targeted cooling effect above the height of the mold plates. Also by a variation of the inner surface of the inserts, the channel cross section can be influenced.
  • the cooling channels In order to be able to set the desired heat transfer location-dependent, the cooling channels have widths and / or depths adapted to the cooling effect above the height of the plates.
  • a continuous casting mold ( Fig. 2a - 4 ) for continuous casting of a steel strand in the direction of an arrow y comprises a (not shown here) support frame for a solid broadside part with a mounted on the outside of the mold copper plate 8 and a (also not shown) support frame for the movable broadside part (lot side) with a
  • the copper plates 8, 9 form the broad side walls and are each at their hot sides 10 and 11, with which they adjoin a casting cavity 12 for receiving the molten metal, with a radius R a and a radius R i bent.
  • the copper plates 8, 9 have on their side facing away from the casting cavity 12 sides in each case a plurality in the vertical direction extending channels 13, which are each separated by narrow webs 14 from each other. At a distance of a plurality of channels 13 and an associated number of narrow webs 14 wide webs 15 are present, introduced into the holes 16.
  • the holes 16 are used for attachment of (not shown) outer plates or scaffolding parts, which give the copper plates 8, 9 the required stability and which are connected to the support frame.
  • the channels 13 On a plurality of the channels 13 are respectively inserts 17, 18 placed on the narrow webs 14, so that the channels 13 are separated from each other transversely to the casting direction. After the inserts 17, 18 are placed on the channels 13, the outer or cover plate with the copper plate 8, 9 are screwed through the holes 16.
  • the channels 13 on their, the hot sides 10, 11 facing the channel bottoms the same curvature R a and R i as the copper plates 8, 9 on the hot sides 10, 11.
  • R a + s (y) for the channels 13 in the outside copper plate 8
  • R i - s (y) for the channels 13 in the inside copper plate 9.
  • the channels 13 facing contours of the inserts 17, 18 extend in the same manner as that of the channel bottoms, so that the channels 13 at all altitudes of the copper plates 8, 9 have the same cross-section. This means that inner surfaces 19 of the channels 13 everywhere have the same distance to inner surfaces 20 of the inserts 17, 18.
  • the inserts 17, 18 consist either of a temperature-resistant plastic or of a metal, in particular of brass or stainless steel.
  • the width of the inserts 17, 18 is determined by a free space 21 (FIG. Fig. 3b ) between the webs 15th

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

Description

Die Erfindung bezieht sich auf eine Stranggießkokille zum kontinuierlichen Gießen eines Metallstrangs, insbesondere eines Stahlstrangs, mit jeweils einander gegenüberliegenden Breitseitenwänden und Schmalseitenwänden, wobei wenigstens die Breitseitenwände mit Kühlkanälen ausgestattet sind.The invention relates to a continuous casting mold for continuously casting a metal strand, in particular a steel strand, each having opposite broad side walls and narrow side walls, wherein at least the broad side walls are equipped with cooling channels.

Stranggießkokillen sind beispielsweise als Brammenkokillen, Bogenkokillen oder Vorblockkokillen ausgebildet. Als Brammenkokillen dienen Stranggießkokillen zum kontinuierlichen Gießen eines Metallstrangs, insbesondere eines Stahlstrangs. Die Kokillen weisen einander gegenüberliegende Breitseitenwänden und zwischen den Breitseitenwänden klemmbar und entlang der Breitseitenwände quer zur Gießrichtung verlagerbar angeordnete, einander gegenüberliegende, in Gießrichtung keilförmig schmäler werdende oder parallel zueinander angeordnete Schmalseitenwände auf, wobei die Breitseitenwände einen trichterförmigen oder parallelwandigen Eingießbereich aufweisen, der sich in Gießrichtung bis zum Kokillenende erstreckt. Jedoch können auch die Breitseiten der Kokille parallel zueinander angeordnet sein. Hierbei sind die Schmalseitenwände entsprechend der einzustellenden Dicke des zu gießenden Metallstrangs auswechselbar angeordnet.Continuous casting molds are formed, for example, as slab molds, curved molds or Vorblockkokillen. Continuous casting molds for continuous casting of a metal strand, in particular a steel strand, are used as slab molds. The molds have mutually opposite broad side walls and clamped between the broad side walls and along the wide side walls transversely to the casting direction arranged, opposite, in the casting direction wedge-shaped narrowing or parallel to each other arranged narrow side walls, wherein the broad side walls have a funnel-shaped or parallel-walled Eingießbereich extending in the casting direction extends to Kokillenende. However, the broad sides of the mold can be arranged parallel to each other. Here, the narrow side walls are arranged interchangeable according to the adjusted thickness of the casting to be cast metal strand.

Aus der WO 03 106073 A2 ist eine Stranggießkokille für flüssige Metalle, insbesondere für flüssigen Stahl, mit von Wasserkästen umgebenen, den Gießquerschnitt mit parallelem Verlauf bildenden, einander gegenüberliegenden Einsatzplatten aus Stahl und an den Stahleinsatzplatten anliegenden kassettenartigen Kupferplatten bekannt, die den Gießhohlraum begrenzen. An den Stirnseiten des Gießhohlraums sind Endplatten zur Festlegung der Gießstrangstärke und/oder der Gießstrangbreite eingefügt, die den Gießhohlraum an den Stirnseiten abschließen. In den Kupferplatten sind an den Grenzflächen zu den Stahleinsatzplatten einen Einlass mit einem Auslass verbindende Kühlmittelkanäle vorhanden. Bei dieser Stranggießkokille ist die Dicke der Kupferplatten jeweils zwischen dem Kühlmedium und der Kupferplatten-Heißseite über die Breite und/oder die Höhe unterschiedlich. Dadurch kann die Heißseiten-Temperatur über die Kokillenbreite vergleichmäßigt werden und der deutliche Temperaturabfall über die Kokillenhöhe unterhalb des Gießspiegelbereichs reduziert werden.From the WO 03 106073 A2 is a continuous casting mold for liquid metals, in particular for liquid steel, with surrounding of water boxes, the casting cross-section forming parallel, opposing insert plates made of steel and the steel insert plates adjacent cartridge-like copper plates known that limit the casting cavity. At the end faces of the casting cavity end plates for fixing the Gießstrangstärke and / or the Gießstrangbreite are inserted, which complete the casting cavity at the end faces. In the copper plates, coolant passages connecting the inlet to an outlet are provided at the interfaces with the steel insert plates. In this continuous casting mold, the thickness of the copper plates in each case between the cooling medium and the copper plate hot side across the width and / or the height is different. As a result, the hot-side temperature can be made uniform over the width of the mold and the significant temperature drop over the mold height below the Gießspiegelbereichs can be reduced.

Aus der EP-A-1 757 385 , DE 103 58 853 A1 und aus der JP 2005 028406 A sind Kokillenbreitseiten einer Stranggießkokille bekannt, bei denen die Kühlkanäle in Gießrichtung verlaufend in die Kokillenplatte eingearbeitet sind. Um die Durchflussgeschwindigkeit des Kühlmediums durch den Kühlkanal zu beeinflussen, werden die Strömungsquerschnitte stufenförmig oder linear mit entsprechenden Füllstücken verändert.From the EP-A-1 757 385 . DE 103 58 853 A1 and from the JP 2005 028406 A Kokillenbreitseiten a continuous casting mold are known in which the cooling channels are incorporated in the casting direction extending into the mold plate. In order to influence the flow rate of the cooling medium through the cooling channel, the flow cross sections are changed stepwise or linearly with corresponding filling pieces.

Bei den Druckschriften JP 11 207442 A , DE 10 2006 036708 A1 , DE 103 04 543 B3 und bei der WO 03/035306 A1 wird ein Verfahren zum Stranggießen von flüssigen Metallen beschrieben bei der eine gleichmäßige Bildung der Strangschale dahingehend erreicht wird, dass der Abstand zwischen Heißseite und Kühlkanalgrund nach den Bedürfnissen variiert wird.In the pamphlets JP 11 207442 A . DE 10 2006 036708 A1 . DE 103 04 543 B3 and at the WO 03/035306 A1 describes a process for the continuous casting of liquid metals in which a uniform formation of the strand shell is achieved in that the distance between the hot side and the cooling channel bottom is varied according to needs.

Bei den Druckschriften WO 2007/068687 , DE 35 26 736 , GB 1 082 988 , WO 03/092931 und WO 98/20997 werden durch Einbringung verschiedener Füllstücke in die Kühlkanäle die Querschnitte derart verändert, dass sei der gewünschten Kühlwirkung entsprechen.In the pamphlets WO 2007/068687 . DE 35 26 736 . GB 1 082 988 . WO 03/092931 and WO 98/20997 are introduced by introducing different filler pieces in the cooling channels, the cross sections such that correspond to the desired cooling effect.

Bei Bogenkokillen nach dem Stand der Technik ergeben sich fertigungsbedingt gerade verlaufende Kühlnuten oder gerade Bohrungen, die über die Plattenhöhe von oben nach unten unterschiedliche Kupferwandstärken auf der Innen- und der Außenseite der Kokille aufweisen. Dadurch ist die Kühlwirkung insbesondere im unteren Teil der Kokille zwischen der Innen- und der Außenseite unterschiedlich.In curved molds according to the prior art arise due to production straight running cooling grooves or straight holes, which have different thicknesses of plate thickness on the inside and the outside of the mold on the plate height from top to bottom. As a result, the cooling effect is different in particular in the lower part of the mold between the inside and the outside.

Figur 1 zeigt eine derartige Bogenkokille im Längsschnitt, bezogen auf die Gießrichtung. Zwischen zwei Kupferplatten 1, 2 erstreckt sich ein Gießhohlraum 3, aus dem heraus in Richtung eines Pfeils y flüssiges Metall gegossen wird. Die Kupferplatten 1, 2 sind beide geringfügig gebogen. Die Kupferplatte 1 ist auf der Außenseite der Kokille angebracht und ortsfest. Auf ihrer, dem Gießhohlraum 3 zugewandten Innenseite ist sie mit einem Radius Ra gebogen, während die zur Dickeneinstellung der zu gießenden Bramme dienende, auf der Außenseite der Kokille angebrachte Kupferplatte 2 auf ihrer Innenseite mit einem Radius Ri gebogen ist. Beide Kupferplatten 1, 2 sind mit Kühlkanälen 4 bzw. 5 ausgestattet, durch die eine Kühlflüssigkeit hindurchläuft. Die Kühlkanäle 4, 5 haben jeweils einen geraden Verlauf. Ihr Abstand zu einer Innenfläche 6 bzw. 7 der Kupferplatte ändert sich somit mit der Höhe. Die Abstände sa bzw. si, die die Böden der Kühlkanäle in Bezug auf die Heißseiten der Kupferplatten 1, 2 haben, sind je nach Höhe unterschiedlich. Es gilt: si ≠ sa. FIG. 1 shows such a curved mold in longitudinal section, relative to the casting direction. Between two copper plates 1, 2 there extends a casting cavity 3 from which liquid metal is poured out in the direction of an arrow y. The copper plates 1, 2 are both slightly bent. The copper plate 1 is mounted on the outside of the mold and fixed. On its, the casting cavity 3 facing inside it is bent with a radius R a , while the serving to adjust the thickness of the slab to be cast, mounted on the outside of the mold copper plate 2 is bent on its inside with a radius R i . Both copper plates 1, 2 are equipped with cooling channels 4 and 5, through which a cooling liquid passes. The cooling channels 4, 5 each have a straight course. Their distance from an inner surface 6 or 7 of the copper plate thus changes with height. The distances s a and s i , which have the bottoms of the cooling channels with respect to the hot sides of the copper plates 1, 2, are different depending on the height. The following applies: si ≠ sa.

Es ist die Aufgabe der Erfindung, eine Stranggießkokille so zu verbessern, dass die Kühlwirkung in den Seitenwänden der Kokille vergleichmäßigt wird.It is the object of the invention to improve a continuous casting mold so that the cooling effect in the side walls of the mold is made uniform.

Erfindungsgemäß wird diese Aufgabe durch den Gegenstand des Anspruchs 1 gelöst.According to the invention, this object is achieved by the subject matter of claim 1.

Gemäß der Erfindung wird eine optimierte Gestaltung der Wandstärke der den Gießhohlraum begrenzenden Kupferplatten angestrebt, wobei etwa bei einer Bogenkokille innere und äußere Kupferplatten über die gesamte Länge von oben nach unten mit einer gleichmäßigen Kupferwandstärke und somit einer gleichmäßigeren Kühlwirkung versehen werden können. Hierdurch wird eine bessere Produktqualität der mit dieser Kokille zu gießenden Brammen oder Knüppel und eine Verbesserung des Gießprozesses selbst erreicht. Sowohl die Breitseitenwände als auch die Schmalseitenwände können mit Kühlkanälen ausgestattet sein.According to the invention, an optimized design of the wall thickness of the casting cavity bounding copper plates is sought, for example, in a curved mold inner and outer copper plates over the entire length from top to bottom with a uniform copper wall thickness and thus a more uniform cooling effect can be provided. As a result, a better product quality of the slabs or billets to be cast with this mold and an improvement of the casting process itself is achieved. Both the wide side walls and the narrow side walls can be equipped with cooling channels.

Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.Advantageous developments of the invention will become apparent from the dependent claims.

In vorteilhafter Weise ist vorgesehen, dass die Kühlkanäle als Nuten in der Außenwand an den Gießhohlraum angrenzender Platten, insbesondere von Kupferplatten, ausgestaltet sind. Die an den Gießhohlraum angrenzenden Kupferplatten sind auf ihrer Außenseite mit Vertiefungen, Nuten, Kanälen oder dgl. versehen, um den Durchfluss einer Kühlflüssigkeit durch diese hindurch zu ermöglichen. Auf der Außenseite sind die Kupferplatten von weiteren Platten, d. h. von Deckplatten, bedeckt, durch die die Vertiefungen, Nute, Kanäle, etc. abgedeckt werden, so dass diese geschlossene Leitungen bilden, die nur oben und unten einen Einlass bzw. einen Auslass aufweisen, so dass eine Kühlflüssigkeit durch sie hindurchfließen kann.Advantageously, it is provided that the cooling channels are designed as grooves in the outer wall of the casting cavity adjacent plates, in particular of copper plates. The adjacent to the casting cavity copper plates are provided on their outside with recesses, grooves, channels or the like., To allow the passage of a cooling liquid therethrough. On the outside, the copper plates are covered by further plates, ie cover plates, through which the recesses, grooves, channels, etc. are covered, so that they form closed conduits which have only an inlet and an outlet at the top and bottom, so that a cooling fluid can flow through them.

In einer bevorzugten Ausführungsform haben die Kühlkanäle über ihre gesamte Länge denselben Abstand zum Gießhohlraum; alternativ kann jedoch auch aus Gründen eines sich über die Länge der Platten ändernden Wärmeübergangs vorgesehen werden, dass der Abstand der Kanäle zum Gießhohlraum sich ändert, um eine zielgerichtete Kühlwirkung über der Höhe der Kokillenplatten einzustellen. Auch durch eine Variation der Innenfläche der Einlegeteile lässt sich der Kanalquerschnitt beeinflussen.In a preferred embodiment, the cooling channels have the same distance to the casting cavity over their entire length; Alternatively, however, it may also be provided, for reasons of changing the heat transfer over the length of the plates, that the distance between the channels and the casting cavity changes in order to set a targeted cooling effect above the height of the mold plates. Also by a variation of the inner surface of the inserts, the channel cross section can be influenced.

Um ortsbezogen den gewünschten Wärmeübergang einstellen zu können, haben die Kühlkanäle über der Höhe der Platten an die Kühlwirkung angepasste Breiten und/oder Tiefen.In order to be able to set the desired heat transfer location-dependent, the cooling channels have widths and / or depths adapted to the cooling effect above the height of the plates.

Nachstehend wird die Erfindung in einem Ausführungsbeispiel näher erläutert. Es zeigen:

Fig. 2a
eine perspektivische Ansicht einer Stranggießkokille mit zwei jeweils mit
Fig. 2a
eine perspektivische Ansicht einer Stranggießkokille mit zwei jeweils mit Kanälen ausgestatteten Kupferplatten, teilweise aufgeschnitten, unter Weglassung der Außenwände,
Fig. 2b
eine Schnittansicht der Stranggießkokille entsprechend einer Schnittlinie A - A aus Fig. 2a im Bereich der Kanäle,
Fig. 3a
eine Schnittansicht der Stranggießkokille entsprechend einer Schnittlinie B - B aus Fig. 2a, d. h. im Bereich von schmalen Stegen zwischen den Kanälen,
Fig. 3b
eine Draufsicht auf eine der Kupferplatten der Stranggießkokille gemäß Fig. 2a, teilweise mit Einlegeteilen, und
Fig. 4
eine Schnittansicht der Kupferplatte und der Einlegeteile entsprechend einer Schnittlinie C - C aus Fig. 2b.
The invention will be explained in more detail in an embodiment. Show it:
Fig. 2a
a perspective view of a continuous casting mold with two each with
Fig. 2a
a perspective view of a continuous casting mold with two each equipped with channels copper plates, partially cut away, omitting the outer walls,
Fig. 2b
a sectional view of the continuous casting mold according to a section line A - A from Fig. 2a in the area of the channels,
Fig. 3a
a sectional view of the continuous casting mold according to a section line B - B from Fig. 2a ie in the area of narrow webs between the channels,
Fig. 3b
a plan view of one of the copper plates of the continuous casting mold according to Fig. 2a , partly with inserts, and
Fig. 4
a sectional view of the copper plate and the inserts according to a section line C - C from Fig. 2b ,

Eine Stranggießkokille (Fig. 2a - 4) zum kontinuierlichen Gießen eines Stahlstranges in Richtung eines Pfeils y umfasst einen (hier nicht dargestellten) Stützrahmen für ein festes Breitseitenteil mit einer auf der Außenseite der Kokille angebrachten Kupferplatte 8 und einen (ebenfalls nicht dargestellten) Stützrahmen für das bewegbare Breitseitenteil (Losseite) mit einer auf der Innenseite der Kokille angebrachten Kupferplatte 9. Die Kupferplatten 8, 9 bilden die Breitseitenwände und sind jeweils an ihren Heißseiten 10 bzw. 11, mit denen sie an einen Gießhohlraum 12 zur Aufnahme der Metallschmelze angrenzen, mit einem Radius Ra bzw. einem Radius Ri gebogen.A continuous casting mold ( Fig. 2a - 4 ) for continuous casting of a steel strand in the direction of an arrow y comprises a (not shown here) support frame for a solid broadside part with a mounted on the outside of the mold copper plate 8 and a (also not shown) support frame for the movable broadside part (lot side) with a The copper plates 8, 9 form the broad side walls and are each at their hot sides 10 and 11, with which they adjoin a casting cavity 12 for receiving the molten metal, with a radius R a and a radius R i bent.

Die Kupferplatten 8, 9 weisen auf ihren von dem Gießhohlraum 12 abgewandten Seiten jeweils eine Vielzahl in senkrechter Richtung verlaufende Kanäle 13 auf, die jeweils durch schmale Stege 14 voneinander getrennt sind. Im Abstand einer Mehrzahl von Kanälen 13 und einer zugehörigen Anzahl schmaler Stege 14 sind breite Stege 15 vorhanden, in die Bohrungen 16 eingebracht. Die Bohrungen 16 dienen zur Befestigung von (nicht dargestellten) Außenplatten oder Gerüstteilen, die den Kupferplatten 8, 9 die erforderliche Stabilität verleihen und die mit dem Stützrahmen verbunden sind.The copper plates 8, 9 have on their side facing away from the casting cavity 12 sides in each case a plurality in the vertical direction extending channels 13, which are each separated by narrow webs 14 from each other. At a distance of a plurality of channels 13 and an associated number of narrow webs 14 wide webs 15 are present, introduced into the holes 16. The holes 16 are used for attachment of (not shown) outer plates or scaffolding parts, which give the copper plates 8, 9 the required stability and which are connected to the support frame.

Auf einer Mehrzahl der Kanäle 13 sind jeweils Einlegeteile 17, 18 auf den schmalen Stegen 14 aufgelegt, so dass die Kanäle 13 quer zur Gießrichtung voneinander getrennt sind. Nachdem die Einlegeteile 17, 18 auf die Kanäle 13 aufgelegt sind, kann die Außen- oder Abdeckplatte mit der Kupferplatte 8, 9 über die Bohrungen 16 verschraubt werden.On a plurality of the channels 13 are respectively inserts 17, 18 placed on the narrow webs 14, so that the channels 13 are separated from each other transversely to the casting direction. After the inserts 17, 18 are placed on the channels 13, the outer or cover plate with the copper plate 8, 9 are screwed through the holes 16.

In der dargestellten Ausführungsform haben die Kanäle 13 auf ihren, den Heißseiten 10, 11 zugewandten Kanalböden dieselbe Krümmung Ra bzw. Ri wie die Kupferplatten 8, 9 an den Heißseiten 10, 11. Jedoch kann je nach Situation der Kokille und entsprechend der gewünschten Abkühlung der Metallschmelze in der Gießkokille auch eine besondere Formgebung der Kanäle 13 über den Verlauf ihrer Länge vorgegeben werden, so dass sich die Wandstärke der Kupferplatten in Abhängigkeit von der Höhe ändert. Dies wird durch die Funktion s(y) zum Ausdruck gebracht. Damit gilt für die Krümmungsradien der Kanalböden in allgemeiner Form: Ra + s(y) für die Kanäle 13 in der außenseitigen Kupferplatte 8 und Ri - s(y) für die Kanäle 13 in der innenseitigen Kupferplatte 9.In the illustrated embodiment, the channels 13 on their, the hot sides 10, 11 facing the channel bottoms the same curvature R a and R i as the copper plates 8, 9 on the hot sides 10, 11. However, depending on the situation of the mold and according to the desired Cooling of the molten metal in the casting mold also a special shape of the channels 13 are given over the course of their length, so that the wall thickness of the copper plates changes depending on the height. This is expressed by the function s (y). Thus, for the radii of curvature of the channel bottoms in general form: R a + s (y) for the channels 13 in the outside copper plate 8 and R i - s (y) for the channels 13 in the inside copper plate 9.

Auch die den Kanälen 13 zugewandten Konturen der Einlegeteile 17, 18 verlaufen in der gleichen Weise wie die der Kanalböden, so dass die Kanäle 13 in allen Höhenlagen der Kupferplatten 8, 9 denselben Querschnitt haben. Dies bedeutet, dass Innenflächen 19 der Kanäle 13 überall denselben Abstand zu Innenflächen 20 der Einlegeteile 17, 18 haben.Also, the channels 13 facing contours of the inserts 17, 18 extend in the same manner as that of the channel bottoms, so that the channels 13 at all altitudes of the copper plates 8, 9 have the same cross-section. This means that inner surfaces 19 of the channels 13 everywhere have the same distance to inner surfaces 20 of the inserts 17, 18.

Die Einlegeteile 17, 18 bestehen entweder aus einem temperaturbeständigen Kunststoff oder aus einem Metall, insbesondere aus Messing oder Edelstahl. Die Breite der Einlegeteile 17, 18 bestimmt sich nach einem Freiraum 21 (Fig. 3b) zwischen den Stegen 15.The inserts 17, 18 consist either of a temperature-resistant plastic or of a metal, in particular of brass or stainless steel. The width of the inserts 17, 18 is determined by a free space 21 (FIG. Fig. 3b ) between the webs 15th

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Kupferplattecopperplate
22
Kupferplattecopperplate
33
Gießhohlraummold cavity
44
Kühlkanälecooling channels
55
Kühlkanälecooling channels
66
Innenflächepalm
77
Innenflächepalm
88th
Kupferplattecopperplate
99
Kupferplattecopperplate
1010
Heißseitehot side
1111
Heißseitehot side
1212
Gießhohlraummold cavity
1313
Kanälechannels
1414
schmale Stegenarrow bars
1515
breite Stegewide footbridges
1616
Bohrungendrilling
1717
Einlegeteilinsert
1818
Einlegeteilinsert
1919
Innenflächepalm
2020
Innenflächepalm
2121
Freiraumfree space

Claims (2)

  1. Continuous casting mould for continuous casting of metal strip with mutually opposite wide side walls (8, 9) in the form of copper plates and narrow side walls, wherein at least the wide side walls (8, 9) are furnished with cooling channels (13), wherein the copper plates (8, 9) are respectively curved at the hot sides (10, 11) thereof, by which they adjoin a casting cavity (12) of the continuous casting mould, with a radius Ra or a radius Ri, characterised in that a spacing in the form of a wall thickness s(y), which changes in dependence on height y, of the copper plates is formed between the channel bases of the cooling channel (13) and the casting cavity; and
    the radii of curvature of the channel bases of the cooling channels (13) in the copper plate (8) at the outer side are represented by the function Ra + s(y) and in the copper plate (9) at the inner side by the function Ri - s(y).
  2. Continuous casting mould according to claim 1, characterised in that the cooling channels (13) are formed as grooves in the outer wall of copper plates (8, 9) adjoining the casting cavity (12).
EP09777692.6A 2008-08-06 2009-08-06 Strand casting mold for liquid metal, particularly for liquid steel Active EP2321075B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008036541 2008-08-06
PCT/EP2009/005690 WO2010015399A1 (en) 2008-08-06 2009-08-06 Strand casting mold for liquid metal, particularly for liquid steel

Publications (2)

Publication Number Publication Date
EP2321075A1 EP2321075A1 (en) 2011-05-18
EP2321075B1 true EP2321075B1 (en) 2018-07-11

Family

ID=41165545

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09777692.6A Active EP2321075B1 (en) 2008-08-06 2009-08-06 Strand casting mold for liquid metal, particularly for liquid steel

Country Status (3)

Country Link
EP (1) EP2321075B1 (en)
CN (1) CN102112255B (en)
WO (1) WO2010015399A1 (en)

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DE102016124801B3 (en) * 2016-12-19 2017-12-14 Kme Germany Gmbh & Co. Kg Mold plate and mold
DE102017211654A1 (en) 2017-07-07 2019-01-10 Sms Group Gmbh Side plate of a continuous casting mold
EP3626364B1 (en) * 2018-09-18 2021-06-30 SMS Group GmbH Conduit section and mold device with the conduit section
IT201900001035A1 (en) * 2019-01-24 2020-07-24 Danieli Off Mecc INGOT MILL FOR CONTINUOUS CASTING
DE102022208478A1 (en) 2022-08-16 2024-02-22 Sms Group Gmbh Copper plate with local intensive cooling zones

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Publication number Publication date
CN102112255A (en) 2011-06-29
WO2010015399A1 (en) 2010-02-11
EP2321075A1 (en) 2011-05-18
CN102112255B (en) 2014-05-07

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