EP0912271B1 - Liquid-cooled mould - Google Patents

Liquid-cooled mould Download PDF

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Publication number
EP0912271B1
EP0912271B1 EP97924881A EP97924881A EP0912271B1 EP 0912271 B1 EP0912271 B1 EP 0912271B1 EP 97924881 A EP97924881 A EP 97924881A EP 97924881 A EP97924881 A EP 97924881A EP 0912271 B1 EP0912271 B1 EP 0912271B1
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EP
European Patent Office
Prior art keywords
chill
copper
metal studs
copper plates
chill according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP97924881A
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German (de)
French (fr)
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EP0912271A1 (en
Inventor
Wolfgang Stagge
Gerhard HUGENSCHÜTT
Franz Keiser
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KM Europa Metal AG
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KM Europa Metal AG
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Publication date
Priority claimed from DE19716450A external-priority patent/DE19716450A1/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
    • 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
    • B22D11/0408—Moulds for casting thin slabs
    • 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
    • B22D11/0406—Moulds with special profile
    • 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
    • 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
    • B22D11/059—Mould materials or platings

Definitions

  • a liquid-cooled mold of the type in question becomes continuous casting of thin steel slabs, the cross-sectional length of which is a multiple of the Cross-sectional width.
  • At least every broad side wall is made up of one Mold cavity bounding copper plate and a steel support plate together.
  • the copper plate is on the support plate by means of transversely protruding metal bolts attached. To do this, the metal bolts penetrate the holes in the support plate. End The holes are provided with extended areas in which nuts on the Threaded ends of the metal bolts can be screwed. With their help Copper plate pulled tight to the support plate.
  • the invention is based on the object of a liquid-cooled mold for high casting speeds, especially for the Near-dimensional steel casting, to create, where the strength problems clearly in the area of the connections of the metal bolts with the copper plates are reduced.
  • the metal bolt according to claim 2 CuNiFe alloy Mn added that there is a composition of CuNi30Mn1Fe.
  • the metal bolts made of a CuNi30Mn1Fe material.
  • nickel is used as a filler metal (Claim 5).
  • the filler metal can be used as a foil between the metal studs and the copper plates are inserted. It is also possible to use the copper plates to be provided with the filler metal at the connection points or also to coat the end faces of the metal bolts. It is also possible to use nickel rings Use the metal studs on the circumference as a filler metal.
  • the copper plates of the broad side walls Groove-like grooves running parallel to the casting direction and covered by the support plates Coolant channels on.
  • Coolant channels on.
  • cooling holes can be generated by mechanical deep drilling. Through this Cooling holes transferred coolant avoids a local in continuous casting operation Temperature rise of the copper plates near the connection areas of the Metal bolt with the copper plate.
  • the cooling bores are preferably arranged in the area of the bathroom mirror.
  • the invention provides according to claim 9 that the support plates groove-like, parallel to the casting direction, covered by the copper plates Have coolant channels. There are then no coolant channels in the copper plates available. If necessary, a combination of coolant channels can also be used used in the copper plates and in the support plates.
  • the cross section is according to claim 10 of the mold cavity is larger at the pouring end than at the strand exit end Measured end.
  • the mold cavity has multiple taper.
  • a bulge may be provided which decreases in size in the casting direction. This Bulging serves in particular to hold a dip tube.
  • FIG. 1 is a liquid-cooled, only schematically illustrated Mold for continuous casting of thin steel slabs, not shown, whose cross-sectional length is a multiple of the cross-sectional width.
  • the mold 1 has two multilayer broad side walls 2 lying opposite one another and two narrow side walls 3, also opposite one another, which form a mold cavity 4.
  • the broad side walls 2 are at the pour-side end 5 of the mold cavity 4 Bulges 6 provided along a partial height of the mold 1 down be steadily reformed.
  • the cross section is at the end 7 of the strand exit of the mold cavity 4 rectangular and to the desired thin slab cross section aligned.
  • the purpose of the two opposite bulges 6 consists of the space required for a dip tube, not shown for the supply of the molten metal.
  • each broad side wall 2 has the mold cavity 4 delimiting copper plate 8 and a steel support plate 9.
  • Copper plate 8 are, as can also be seen in FIG. 2 drawn without the support plate 8 lets, parallel to the pouring direction GR, covered by the support plate 9 and groove-like coolant channels 10 to which cooling water can be applied.
  • FIGS 2 and 3 show that parallel to the coolant channels 10 also extend cooling bores 11 which can be acted upon with cooling water.
  • the cooling bores 11 run in the vertical cross-sectional planes QE of metal studs 12 made of CuNi30Mn1Fe, which are produced using the stud welding process using nickel rings 13 as a filler metal on the Back 14 of the copper plate 8 are attached. Push through the metal bolts 12 Bores 15 in the support plate 9. By screwing nuts 16 onto the thread ends 17 of the metal bolt 12, the copper plate 8 is used on the support plate 9 and committed to this. The nuts 16 are in enlarged end sections 18 of the holes 15.
  • the coolant is fed into the cooling bores 11 via the coolant channels 10, and expediently, as shown in Figure 2, via a branch 19 between a cooling hole 11 and the adjacent coolant channel 10.
  • FIG 3 also shows that the coolant channels 10 in addition to the cross-sectional planes QE of the metal bolts 12 deeper than the other coolant channels 10 are trained.
  • the arrangement of coolant channels 10 and cooling bores 11 in a copper plate 8 takes place when the copper plate 8 has a sufficient thickness D.
  • coolant channels 10a according to FIG. 4 are worked into the support plate 9a and through the copper plate 8a when fixing the copper plate 8a to the support plate 9a covered with the metal bolt 12.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Abstract

PCT No. PCT/DE97/00961 Sec. 371 Date Nov. 13, 1998 Sec. 102(e) Date Nov. 13, 1998 PCT Filed May 7, 1997 PCT Pub. No. WO97/43063 PCT Pub. Date Nov. 20, 1997A liquid-cooled chill mold for continuous casting of thin steel slabs is disclosed whose cross-sectional length is a multiple of the cross-sectional width, having two opposing wide side walls, each with a copper liner and a backing plate, and narrow side walls delimiting the width of the slab, with the copper liners that delimit the mold cavity being detachably attached to the backing plates by metal studs made of a CuNiFe alloy and the metal studs being welded to the copper liners.

Description

Eine flüssigkeitsgekühlte Kokille der in Rede stehenden Art wird zum Stranggießen von dünnen Stahlbrammen verwendet, deren Querschnittslänge ein Mehrfaches der Querschnittsbreite beträgt. Zumindest jede Breitseitenwand setzt sich aus einer den Formhohlraum begrenzenden Kupferplatte und einer stählernen Stützplatte zusammen. Die Kupferplatte ist mittels quer abstehender Metallbolzen an der Stützplatte befestigt. Dazu durchsetzen die Metallbolzen Bohrungen in der Stützplatte. Endseitig der Bohrungen sind erweiterte Bereiche vorgesehen, in denen Muttern auf die Gewindeenden der Metallbolzen geschraubt werden können. Mit deren Hilfe wird die Kupferplatte fest an die Stützplatte herangezogen.A liquid-cooled mold of the type in question becomes continuous casting of thin steel slabs, the cross-sectional length of which is a multiple of the Cross-sectional width. At least every broad side wall is made up of one Mold cavity bounding copper plate and a steel support plate together. The copper plate is on the support plate by means of transversely protruding metal bolts attached. To do this, the metal bolts penetrate the holes in the support plate. End The holes are provided with extended areas in which nuts on the Threaded ends of the metal bolts can be screwed. With their help Copper plate pulled tight to the support plate.

Im Umfang der US-PS 3,709,286 ist es bekannt, die Metallbolzen aus Edelstahl zu bilden. Metallbolzen aus Edelstahl führen jedoch zu schlechten Schweißverbindungen mit der Kupferplatte, da sich an den Schweißstellen grobkörnige Gefüge ausbilden. Diese sind wenig elastisch und daher sehr empfindlich gegen Biegebeanspruchungen.In the scope of US Pat. No. 3,709,286, it is known to tighten the metal bolts made of stainless steel form. However, stainless steel metal studs lead to poor welded connections with the copper plate, since coarse-grained structures form at the welds. These are not very elastic and therefore very sensitive to bending stress.

Durch die Patent Abstracts of Japan JP-A-3258440 ist es bekannt, in rückseitige Bohrungen der den Kokillenraum begrenzenden Kupferplatte Schraubhülsen einzudrehen und in diese Schraubhülsen längere Stangen einzusetzen, welche eine Kühlbox quer durchsetzen und die Kupferplatte an die aus rostfreien Stahl gebildete Stützplatte heranziehen. Dazu sind auch noch Bohrungen in der Stützplatte vorgesehen. Daneben sind an die Rückseite der Kupferplatte kurze Befestigungsbolzen durch Bolzenschweißen festgelegt. Diese kurzen Befestigungsbolzen sind mit Aufnahmehülsen versehen, in die kürzere, die Kühlbox durchsetzende Stangen eingedreht werden.Through the Patent Abstracts of Japan JP-A-3258440 it is known, in the back holes of the mold room screwing in limiting copper plate and insert longer rods into these screw sleeves, which push a cool box across and attach the copper plate pull up the stainless steel support plate. There are also holes in the support plate intended. Next to it are on the back of the copper plate short fastening bolts by stud welding fixed. These short mounting bolts are with receiving sleeves provided, in the shorter, penetrating the cool box Rods are screwed in.

Der Erfindung liegt ausgehend vom Stand der Technik die Aufgabe zugrunde, eine flüssigkeitsgekühlte Kokille für hohe Gießgeschwindigkeiten, insbesondere für den endabmessungsnahen Stahlstrangguß, zu schaffen, bei welcher die Festigkeitsprobleme im Bereich der Verbindungen der Metallbolzen mit den Kupferplatten deutlich reduziert sind. Starting from the prior art, the invention is based on the object of a liquid-cooled mold for high casting speeds, especially for the Near-dimensional steel casting, to create, where the strength problems clearly in the area of the connections of the metal bolts with the copper plates are reduced.

Die Lösung dieser Aufgabe besteht nach der Erfindung in den Merkmalen des Anspruchs 1.This object is achieved according to the invention in the features of the claim 1.

Kernpunkt der Erfindung bildet die Maßnahme, die Metallbolzen gezielt aus einer CuNiFe-Legierung zu bilden. Aufgrund derartiger, insbesondere hartgezogener, Metallbolzen werden jetzt erhebliche Festigkeitssteigerungen mit nur geringer Festigkeitsstreuung in den Schweißverbindungen mit der Kupferplatte erzielt. Diese kann aus Reinkupfer, beispielsweise SF-Cu, oder aus einer hochtemperaturbeständigen Kupferlegierung, z. B. einer aushärtbaren Kupferlegierung mit Zusätzen von Chrom und/oder Zirkonium bestehen. Die bislang unsichere Handhabung und die vielen Einflußfaktoren während der Schweißung, die eine 100 %-Prüfung mit sich bringen, entfallen.At the heart of the invention is the measure that specifically removes metal bolts from a Form CuNiFe alloy. Due to such, especially hard-drawn, Metal bolts are now significant strength increases with little scatter in strength achieved in the welded joints with the copper plate. This can be made of pure copper, for example SF-Cu, or of a high temperature resistant Copper alloy, e.g. B. a hardenable copper alloy with additives of Chromium and / or zirconium exist. The previously unsafe handling and the many influencing factors during welding that involve a 100% inspection bring, omitted.

Entsprechend einer besonders vorteilhaften Ausführungsform ist nach Anspruch 2 den Metallbolzen aus einer CuNiFe-Legierung Mn hinzulegiert, daß sich eine Zusammensetzung von CuNi30Mn1Fe ergibt.According to a particularly advantageous embodiment is the metal bolt according to claim 2 CuNiFe alloy Mn added that there is a composition of CuNi30Mn1Fe.

Entsprechend einer besonders vorteilhaften Ausführungsform bestehen gemäß Anspruch 2 die Metallbolzen aus einem CuNi30Mn1Fe-Material.According to a particularly advantageous embodiment, according to claim 2 the metal bolts made of a CuNi30Mn1Fe material.

Zur Befestigung der Metallbolzen an den Kupferplatten wird zweckmäßig das an sich bekannte Bolzenschweißverfahren eingesetzt (Anspruch 3).To attach the metal bolts to the copper plates, this is useful in itself known stud welding processes used (claim 3).

Um die Festigkeit und Zähigkeit der Schweißverbindung zu verbessern, sind nach Anspruch 4 die Metallbolzen unter Verwendung eines Schweißzusatzwerkstoffs auf die Kupferplatten geschweißt.To improve the strength and toughness of the welded joint, according to Claim 4 the metal stud using a filler metal the copper plates welded.

Insbesondere gelangt hierbei Nickel als Schweißzusatzwerkstoff zur Anwendung (Anspruch 5). Der Schweißzusatzwerkstoff kann als Folie zwischen die Metallbolzen und die Kupferplatten eingebracht werden. Ebenso ist es möglich, die Kupferplatten an den Verbindungsstellen mit dem Schweißzusatzwerkstoff zu versehen oder auch die Stirnseiten der Metallbolzen zu beschichten. Ferner ist es möglich, Nickelringe umfangsseitig der Metallbolzen als Schweißzusatzwerkstoff einzusetzen. In particular, nickel is used as a filler metal (Claim 5). The filler metal can be used as a foil between the metal studs and the copper plates are inserted. It is also possible to use the copper plates to be provided with the filler metal at the connection points or also to coat the end faces of the metal bolts. It is also possible to use nickel rings Use the metal studs on the circumference as a filler metal.

In weiterer Ausgestaltung des erfindungsgemäßen Grundgedankens weisen entsprechend den Merkmalen des Anspruchs 6 die Kupferplatten der Breitseitenwände parallel zur Gießrichtung verlaufende, durch die Stützplatten abgedeckte nutenartige Kühlmittelkanäle auf. Mit Hilfe derartiger Kühlmittelkanäle kann ein erhöhter Wärmetransfer von der Gießseite zum Kühlwasser gewährleistet werden, so daß hohe Gießgeschwindigkeiten gefahren werden können. Rißbildungen in den Kupferplatten und Beschädigungen von gegebenenfalls vorhandenen Oberflächenbeschichtungen entfallen. Kühlmittelkanäle in den Kupferplatten gelangen insbesondere dann zum Einsatz, wenn die Dicke der Kupferplatten ausreicht, um querschnittsmäßig ausreichend große Kühlmittelkanäle einbringen zu können.In a further embodiment of the basic idea of the invention, point accordingly the features of claim 6, the copper plates of the broad side walls Groove-like grooves running parallel to the casting direction and covered by the support plates Coolant channels on. With the help of such coolant channels, increased heat transfer can be achieved be guaranteed from the pouring side to the cooling water, so that high Casting speeds can be driven. Cracks in the copper plates and damage to any surface coatings that may be present omitted. Coolant channels in the copper plates then reach in particular Use when the thickness of the copper plates is sufficient to be sufficient in cross-section to be able to introduce large coolant channels.

Um auch im Bereich der Metallbolzen die Wärme intensiv ableiten zu können, ist entsprechend Anspruch 7 vorgesehen, daß die Kupferplatten neben den Kühlmittelkanälen parallel zur Gießrichtung verlaufende und in den vertikalen Querschnittsebenen der Metallbolzen sich erstreckende Kühlbohrungen aufweisen. Solche Kühlbohrungen können durch mechanisches Tiefbohren erzeugt werden. Durch diese Kühlbohrungen transferiertes Kühlmittel vermeidet im Stranggießbetrieb einen lokalen Temperaturanstieg der Kupferplatten in der Nähe der Verbindungsbereiche der Metallbolzen mit der Kupferplatte.In order to be able to dissipate the heat intensively in the area of the metal bolts, too according to claim 7 provided that the copper plates next to the coolant channels parallel to the casting direction and in the vertical cross-sectional planes the metal bolt has extending cooling bores. Such cooling holes can be generated by mechanical deep drilling. Through this Cooling holes transferred coolant avoids a local in continuous casting operation Temperature rise of the copper plates near the connection areas of the Metal bolt with the copper plate.

Die Anordnung der Kühlbohrungen erfolgt gemäß Anspruch 8 bevorzugt im Badspiegelbereich.The cooling bores are preferably arranged in the area of the bathroom mirror.

Im Falle des Einsatzes dünner Kupferplatten, die einen sehr guten Wärmedurchgang gewährleisten, sieht die Erfindung nach Anspruch 9 vor, daß die Stützplatten parallel zur Gießrichtung verlaufende, durch die Kupferplatten abgedeckte nutenartige Kühlmittelkanäle aufweisen. In den Kupferplatten sind dann keine Kühlmittelkanäle vorhanden. Gegebenenfalls kann auch eine Kombination von Kühlmittelkanälen in den Kupferplatten und in den Stützplatten zur Anwendung gelangen. In case of using thin copper plates, which have a very good heat transfer ensure, the invention provides according to claim 9 that the support plates groove-like, parallel to the casting direction, covered by the copper plates Have coolant channels. There are then no coolant channels in the copper plates available. If necessary, a combination of coolant channels can also be used used in the copper plates and in the support plates.

Zur weiteren Erhöhung der Gießgeschwindigkeit ist nach Anspruch 10 der Querschnitt des Formhohlraum am eingießseitigen Ende größer als am strangaustrittsseitigen Ende bemessen.To further increase the casting speed, the cross section is according to claim 10 of the mold cavity is larger at the pouring end than at the strand exit end Measured end.

In diesem Zusammenhang ist es dann ferner von Vorteil, wenn nach Anspruch 11 der Formhohlraum eine mehrfache Konizität aufweist.In this context, it is also advantageous if according to claim 11 the mold cavity has multiple taper.

Schließlich kann nach Anspruch 12 am eingießseitigen Ende des Formhohlraums eine Ausbauchung vorgesehen sein, die sich in Gießrichtung verkleinert. Diese Ausbauchung dient insbesondere der Aufnahme eines Tauchrohrs.Finally, according to claim 12 at the pour-side end of the mold cavity a bulge may be provided which decreases in size in the casting direction. This Bulging serves in particular to hold a dip tube.

Die Erfindung ist nachfolgend anhand von in den Zeichnungen dargestellten Ausführungsbeispielen näher erläutert. Es zeigen:

Figur 1
im Schema im vertikalen Längsschnitt eine flüssigkeitsgekühlte Kokille;
Figur 2
in vergrößerter Darstellung eine Teilansicht auf die Rückseite einer Kupferplatte der Kokille der Figur 1 gemäß dem Pfeil II der Figur 3;
Figur 3
in vergrößertem Maßstab einen Teil-Horizontalschnitt durch eine Breitseitenwand der Kokille der Figur 1 und
Figur 4
ebenfalls in vergrößertem Maßstab einen Teil-Horizontalschnitt durch eine Breitseitenwand gemäß einer weiteren Ausführungsform.
The invention is explained in more detail below on the basis of exemplary embodiments illustrated in the drawings. Show it:
Figure 1
in the diagram in vertical longitudinal section a liquid-cooled mold;
Figure 2
an enlarged view of a partial view of the back of a copper plate of the mold of Figure 1 according to the arrow II of Figure 3;
Figure 3
on an enlarged scale a partial horizontal section through a broad side wall of the mold of Figures 1 and
Figure 4
also on a larger scale, a partial horizontal section through a broad side wall according to a further embodiment.

Mit 1 ist in der Figur 1 eine nur schematisch veranschaulichte flüssigkeitsgekühlte Kokille zum Stranggießen von nicht näher dargestellten dünnen Stahlbrammen bezeichnet, deren Querschnittslänge ein Mehrfaches der Querschnittsbreite beträgt. Die Kokille 1 weist zwei einander gegenüberliegende mehrlagige Breitseitenwände 2 und zwei ebenfalls einander gegenüberliegende Schmalseitenwände 3 auf, welche einem Formhohlraum 4 bilden. 1 in FIG. 1 is a liquid-cooled, only schematically illustrated Mold for continuous casting of thin steel slabs, not shown, whose cross-sectional length is a multiple of the cross-sectional width. The mold 1 has two multilayer broad side walls 2 lying opposite one another and two narrow side walls 3, also opposite one another, which form a mold cavity 4.

Die Breitseitenwände 2 sind am eingießseitigen Ende 5 des Formhohlraums 4 mit Ausbauchungen 6 versehen, die entlang einer Teilhöhe der Kokille 1 nach unten stetig zurückgeformt werden. Am strangaustrittsseitigen Ende 7 ist der Querschnitt des Formhohlraums 4 rechteckig und auf den gewünschten Dünnbrammenquerschnitt ausgerichtet. Der Zweck der beiden gegenüberliegenden Ausbauchungen 6 besteht darin, den erforderlichen Platz für ein nicht näher veranschaulichtes Tauchrohr für die Zufuhr der Metallschmelze zu schaffen.The broad side walls 2 are at the pour-side end 5 of the mold cavity 4 Bulges 6 provided along a partial height of the mold 1 down be steadily reformed. The cross section is at the end 7 of the strand exit of the mold cavity 4 rectangular and to the desired thin slab cross section aligned. The purpose of the two opposite bulges 6 consists of the space required for a dip tube, not shown for the supply of the molten metal.

Wie aus der Figur 3 näher hervorgeht, weist jede Breitseitenwand 2 eine den Formhohlraum 4 begrenzende Kupferplatte 8 und eine stählerne Stützplatte 9 auf. In der Kupferplatte 8 sind, wie auch die ohne die Stützplatte 8 gezeichnete Figur 2 erkennen läßt, parallel zur Gießrichtung GR verlaufende, durch die Stützplatte 9 abgedeckte und mit Kühlwasser beaufschlagbare nutenartige Kühlmittelkanäle 10 vorgesehen.As is clear from FIG. 3, each broad side wall 2 has the mold cavity 4 delimiting copper plate 8 and a steel support plate 9. In the Copper plate 8 are, as can also be seen in FIG. 2 drawn without the support plate 8 lets, parallel to the pouring direction GR, covered by the support plate 9 and groove-like coolant channels 10 to which cooling water can be applied.

Desweiteren lassen die Figuren 2 und 3 erkennen, daß sich parallel zu den Kühlmittelkanälen 10 ebenfalls mit Kühlwasser beaufschlagbare Kühlbohrungen 11 erstrecken. Die Kühlbohrungen 11 verlaufen in den vertikalen Querschnittsebenen QE von Metallbolzen 12 aus CuNi30Mn1Fe, welche mittels des Bolzenschweißverfahrens unter Verwendung von Nickelringen 13 als Schweißzusatzwerkstoff an der Rückseite 14 der Kupferplatte 8 befestigt sind. Die Metallbolzen 12 durchsetzen Bohrungen 15 in der Stützplatte 9. Durch Aufschrauben von Muttern 16 auf die Gewindeenden 17 der Metallbolzen 12 wird die Kupferplatte 8 an die Stützplatte 9 herangezogen und an dieser festgelegt. Die Muttern 16 liegen in erweiterten Endabschnitten 18 der Bohrungen 15.Furthermore, Figures 2 and 3 show that parallel to the coolant channels 10 also extend cooling bores 11 which can be acted upon with cooling water. The cooling bores 11 run in the vertical cross-sectional planes QE of metal studs 12 made of CuNi30Mn1Fe, which are produced using the stud welding process using nickel rings 13 as a filler metal on the Back 14 of the copper plate 8 are attached. Push through the metal bolts 12 Bores 15 in the support plate 9. By screwing nuts 16 onto the thread ends 17 of the metal bolt 12, the copper plate 8 is used on the support plate 9 and committed to this. The nuts 16 are in enlarged end sections 18 of the holes 15.

Die Kühlmitteleinspeisung in die Kühlbohrungen 11 erfolgt über die Kühlmittelkanäle 10, und zwar zweckmäßig, wie die Figur 2 zeigt, über einen Abzweig 19 zwischen einer Kühlbohrung 11 und dem benachbarten Kühlmittelkanal 10. The coolant is fed into the cooling bores 11 via the coolant channels 10, and expediently, as shown in Figure 2, via a branch 19 between a cooling hole 11 and the adjacent coolant channel 10.

Die Figur 3 läßt ferner erkennen, daß die Kühlmittelkanäle 10 neben den Querschnittsebenen QE der Metallbolzen 12 tiefer als die anderen Kühlmittelkanäle 10 ausgebildet sind.Figure 3 also shows that the coolant channels 10 in addition to the cross-sectional planes QE of the metal bolts 12 deeper than the other coolant channels 10 are trained.

Die Anordnung von Kühlmittelkanälen 10 und Kühlbohrungen 11 in einer Kupferplatte 8 erfolgt dann, wenn die Kupferplatte 8 eine ausreichende Dicke D besitzt.The arrangement of coolant channels 10 and cooling bores 11 in a copper plate 8 takes place when the copper plate 8 has a sufficient thickness D.

Gelangt hingegen eine demgegenüber dünnere Kupferplatte 8a zur Anwendung , werden Kühlmittelkanäle 10a gemäß Figur 4 in die Stützplatte 9a eingearbeitet und durch die Kupferplatte 8a beim Festlegen der Kupferplatte 8a an der Stützplatte 9a mit Hilfe der Metallbolzen 12 abgedeckt.If, on the other hand, a thinner copper plate 8a is used, coolant channels 10a according to FIG. 4 are worked into the support plate 9a and through the copper plate 8a when fixing the copper plate 8a to the support plate 9a covered with the metal bolt 12.

Claims (12)

  1. Liquid-cooled chill for continuous casting of thin steel slabs whose cross-section length is a multiple of the cross-section breadth, which chill comprises two facing broad side walls (2) each exhibiting a copper plate (8, 8a) and a supporting plate (9, 9a), and narrow side walls (3) bounding the continuous casting breadth, whereby the copper plates (8, 8a) bounding the mould cavity (4) are fixed detachably to the supporting plates (9, 9a) by means of metal studs (12) made of a CuNiFe alloy and the metal studs (12) are welded on to the copper plates (8, 8a).
  2. Chill according to claim 1, characterised in that Mn is alloyed with the metal studs (12) made of a CuNiFe alloy, resulting in a composition of CuNi30Mn1Fe.
  3. Chill according to claim 1 or 2, characterised in that the metal studs (12) are fixed to the copper plates (8, 8a) by means of the stud welding method.
  4. Chill according to one of claims 1 to 3, characterised in that the metal studs (12) are welded on to the copper plates (8, 8a) using a welding additive (13).
  5. Chill according to claim 4, characterised in that the welding additive (13) is nickel.
  6. Chill according to one of claims 1 to 5, characterised in that the copper plates (8) of the broad side walls (2) exhibit slot-like coolant channels (10) running parallel to the casting direction and covered by the supporting plates (9).
  7. Chill according to one of claims 1 to 6, characterised in that beside the coolant channels (10) the copper plates (8) exhibit cooling bores (11) running parallel to the casting direction (GR) and extending in the vertical cross-section planes (QE) of the metal studs (12).
  8. Chill according to claim 7, characterised in that the cooling bores (11) are disposed in the bath surface area.
  9. Chill according to one of claims 1 to 5, characterised in that the supporting plates (9a) exhibit slot-like coolant channels (10a) running parallel to the casting direction (GR) and covered by the copper plates (8a).
  10. Chill according to one of claims 1 to 9, characterised in that the cross-section of the mould cavity (4) at the pouring end (5) is larger than at the casting exit end (7).
  11. Chill according to one of claims 1 to 10, characterised in that the mould cavity (4) exhibits a multiple conicity.
  12. Chill according to one of claims 1 to 11, characterised in that the mould cavity (4) at the pouring end (5) has at least one bulge (6) which becomes smaller in the casting direction (GR).
EP97924881A 1996-05-13 1997-05-07 Liquid-cooled mould Expired - Lifetime EP0912271B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19619073 1996-05-13
DE19619073 1996-05-13
DE19716450A DE19716450A1 (en) 1996-05-13 1997-04-21 Liquid-cooled mold
DE19716450 1997-04-21
PCT/DE1997/000961 WO1997043063A1 (en) 1996-05-13 1997-05-07 Liquid-cooled mould

Publications (2)

Publication Number Publication Date
EP0912271A1 EP0912271A1 (en) 1999-05-06
EP0912271B1 true EP0912271B1 (en) 2000-08-23

Family

ID=26025623

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97924881A Expired - Lifetime EP0912271B1 (en) 1996-05-13 1997-05-07 Liquid-cooled mould

Country Status (17)

Country Link
US (1) US6145579A (en)
EP (1) EP0912271B1 (en)
JP (1) JP2000510049A (en)
KR (1) KR20000010963A (en)
CN (1) CN1170645C (en)
AT (1) ATE195678T1 (en)
AU (1) AU712782B2 (en)
BR (1) BR9709585A (en)
CA (1) CA2253873A1 (en)
CZ (1) CZ335498A3 (en)
DK (1) DK0912271T3 (en)
ES (1) ES2150774T3 (en)
GR (1) GR3034806T3 (en)
PL (1) PL183716B1 (en)
PT (1) PT912271E (en)
RU (1) RU2182058C2 (en)
WO (1) WO1997043063A1 (en)

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DE19639295C2 (en) * 1996-09-25 1999-09-09 Schloemann Siemag Ag Continuous casting mold
DE19802809A1 (en) * 1998-01-27 1999-07-29 Km Europa Metal Ag Liquid-cooled mold
DE19829606A1 (en) * 1998-07-02 2000-01-05 Schloemann Siemag Ag Broad side of a slab mold
DE19835111A1 (en) * 1998-08-04 2000-02-10 Schloemann Siemag Ag Mold wall of a continuous caster
DE19904149A1 (en) * 1999-02-03 2000-08-10 Sms Demag Ag Arrangement for connecting a mold plate to a water tank
JP3443109B2 (en) * 2001-05-31 2003-09-02 ジャパン・エンジニアリング・ネットワーク株式会社 Assembly mold for continuous casting
KR100768315B1 (en) * 2001-11-12 2007-10-17 주식회사 포스코 Jaw up/down apparatus of tongcrane
DE10226214A1 (en) * 2002-06-13 2003-12-24 Sms Demag Ag Continuous casting mold for liquid metals, especially for liquid steel
DE10237472A1 (en) * 2002-08-16 2004-02-26 Km Europa Metal Ag Liquid-cooled mold for continuously casting steel slabs comprises mold plates made from copper or copper alloy joined to an adapter plate or water tank by bolts fixed to a base protruding from the coolant side of the mold plate
DE10237473A1 (en) * 2002-08-16 2004-02-26 Km Europa Metal Ag Liquid-cooled mold for the continuous casting of metals
US7106905B2 (en) * 2002-08-23 2006-09-12 Hewlett-Packard Development Company, L.P. Systems and methods for processing text-based electronic documents
JP2006320925A (en) * 2005-05-18 2006-11-30 Sanyo Special Steel Co Ltd Continuous casting mold for preventing crack of cast product by uniform cooling
EP1918042A1 (en) * 2006-10-10 2008-05-07 Concast Ag Mould for continuous casting of pre-profiled billets
DE102007002804A1 (en) * 2007-01-18 2008-07-24 Sms Demag Ag Mold wall of a mold for casting a molten metal
CN102126002B (en) * 2011-03-24 2013-01-23 中冶京诚工程技术有限公司 Box-type water-cooling plate assembly for ingot blank combined box-type water-cooling casting device
US20140190655A1 (en) * 2011-11-09 2014-07-10 Nippon Steel & Sumitomo Metal Corporation Continuous casting apparatus for steel
ITMI20120153A1 (en) * 2012-02-06 2013-08-07 Arvedi Steel Engineering S P A THREAD FOR THE CONTINUOUS CASTING FAST OF THIN BRAMMES OF STEEL
CN102581239B (en) * 2012-03-27 2014-01-01 中冶南方工程技术有限公司 Wide-surface copper plate of crystallizer for high-efficiency slab caster
CN105108084A (en) * 2015-09-15 2015-12-02 西峡龙成特种材料有限公司 Liquid cooling narrow-face copper plate for metal continuous casting crystallizer
CN106041005A (en) * 2016-07-19 2016-10-26 上海宝钢工业技术服务有限公司 Integrated continuous casting mold component and preparation method
DE102016124801B3 (en) * 2016-12-19 2017-12-14 Kme Germany Gmbh & Co. Kg Mold plate and mold
RU2748425C2 (en) * 2019-05-07 2021-05-25 Вячеслав Викторович Стулов Crystalliser for manufacturing slabs

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DE3723857A1 (en) * 1987-07-18 1989-01-26 Schloemann Siemag Ag CHOCOLATE FOR VERTICAL STEEL STRIP CASTING
JPH03258440A (en) * 1990-03-06 1991-11-18 Mitsubishi Materials Corp Mold for continuous casting
JPH0826539B2 (en) * 1991-08-19 1996-03-13 中嶋 志朗 Ground improvement body construction method and its equipment

Also Published As

Publication number Publication date
GR3034806T3 (en) 2001-02-28
DK0912271T3 (en) 2000-11-06
WO1997043063A1 (en) 1997-11-20
JP2000510049A (en) 2000-08-08
CZ335498A3 (en) 1999-07-14
BR9709585A (en) 2000-05-02
AU712782B2 (en) 1999-11-18
US6145579A (en) 2000-11-14
AU3023797A (en) 1997-12-05
ATE195678T1 (en) 2000-09-15
PL183716B1 (en) 2002-07-31
CN1170645C (en) 2004-10-13
PT912271E (en) 2001-02-28
EP0912271A1 (en) 1999-05-06
KR20000010963A (en) 2000-02-25
CN1219143A (en) 1999-06-09
CA2253873A1 (en) 1997-11-20
RU2182058C2 (en) 2002-05-10
PL329805A1 (en) 1999-04-12
ES2150774T3 (en) 2000-12-01

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