EP1128919B1 - Plaque a lingotieres d'une installation de coulee continue - Google Patents

Plaque a lingotieres d'une installation de coulee continue Download PDF

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Publication number
EP1128919B1
EP1128919B1 EP99972136A EP99972136A EP1128919B1 EP 1128919 B1 EP1128919 B1 EP 1128919B1 EP 99972136 A EP99972136 A EP 99972136A EP 99972136 A EP99972136 A EP 99972136A EP 1128919 B1 EP1128919 B1 EP 1128919B1
Authority
EP
European Patent Office
Prior art keywords
layer
mould plate
chill mould
cooling
plate 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
Application number
EP99972136A
Other languages
German (de)
English (en)
Other versions
EP1128919A1 (fr
Inventor
Hans Streubel
Lozano-Universidad De Durango No 720 Merced
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
Hylsa SA de CV
Original Assignee
SMS Demag AG
Hylsa SA de CV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SMS Demag AG, Hylsa SA de CV filed Critical SMS Demag AG
Publication of EP1128919A1 publication Critical patent/EP1128919A1/fr
Application granted granted Critical
Publication of EP1128919B1 publication Critical patent/EP1128919B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • 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
    • 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 present invention relates to a mold plate made of copper for a mold Continuous caster, with a molten metal in operation of the continuous caster or a (partially) solidified metal strand facing work surface and at least a cooling surface contacting a cooling medium during operation of the continuous casting installation, wherein the mold plate has a thermal conductivity and is in a Casting direction extends over a mold length.
  • Such a mold plate is known for example from EP 0 149 734 B1.
  • the Mold plates have a lower thermal conductivity in the upper area and a greater heat resistance than in the lower area.
  • the temperature of the Work surface are within a predetermined range.
  • the thickness must also the mold plate are within a permissible thickness range that is greater than is a minimum thickness required for mechanical reasons.
  • the object of the present invention is to provide a mold plate Generic type in such a way that they more often than previously possible can be reworked if a minimum permissible copper wall thickness has already been reached.
  • the object is achieved in that at least in one on the cooling surface Subarea a layer with a thermal conductivity is applied that the layer thermal conductivity the layer is smaller than the thermal conductivity of the mold plate, that the layer consists essentially of nickel and that the layer is one in one Nickel bath is electrolessly applied to the cooling surface layer
  • the layer consists essentially of nickel, since the Coefficient of thermal expansion of nickel less than the coefficient of thermal expansion a conventional mold plate made of copper.
  • the nickel layer is preferably in a nickel bath with additives without current on the cooling surface of the Mold plate deposited. Because in this case, contour-sharp coatings are the cooling surface possible.
  • the layer thickness is very even, and the thermal conductivity of the layer is considerably lower than that of galvanic applied nickel. Regardless of the coating process, the layer thermal conductivity should but a maximum of 10% of the thermal conductivity of the copper Mold plate amount.
  • the insulating properties of the layer are even better if the layer is five to five twenty percent from phosphorus and - apart from impurities - consists of nickel. Because in this case the layer thermal conductivity is less than 3% of the thermal conductivity of the copper mold plate.
  • the cooling surface can be on a rear side opposite the working surface arranged cooling groove or as opposite to the work surface Back of the closed cooling hole.
  • the cooling groove has a bottom surface and side walls.
  • the Layer only be applied to the bottom surface and / or also on the side walls.
  • the temperature distribution over the mold length can be influenced.
  • the layer length is at least 100 mm, preferably between 300 mm and 500 mm. Alternatively, the layer can also extend over the entire length of the mold.
  • a continuous casting plant has mold plates 1 made of copper.
  • each Mold plate 1 has a working surface 2, which is in a casting direction x extends over a mold length L.
  • a molten metal 3 usually a molten steel.
  • the molten metal 3 gradually solidifies into a metal strand 4, which in the casting direction x is withdrawn from the mold plates 1.
  • the mold plates 1 For the controlled solidification of the molten metal 3 to the metal strand 4, one must considerable amount of heat, the so-called pouring heat, dissipated via the mold plates 1 become.
  • the mold plates 1 therefore have according to Figure 2 cooling surfaces 5, which is not shown during operation of the continuous casting mold Cooling medium, e.g. B. water, contact.
  • the cooling surfaces 5 are on one Rear 6 arranged, which is opposite the work surface 2. You are for Back 6 open. They are designed as cooling grooves 5.
  • the mold plate 1 consists of copper. It therefore has one high thermal conductivity W of, for example, approx. 377 W / mK.
  • a layer 7 is therefore to be imprinted on the cooling surfaces 5 applied.
  • the layer 7 has a thermal conductivity S, which is considerable is smaller than the thermal conductivity W of the copper plate.
  • layer 7 consists essentially of nickel, with a phosphorus content of 5% to 20% added.
  • the Phosphorus content between 9% and 14%, e.g. B. at 10% to 12%.
  • the thermal conductivity The layer can be reduced even further by using the Nikkelbad Adds up to 30% silicon carbide in addition to the phosphor. Otherwise layer 7 contains only minor impurities.
  • the layer 7, as shown schematically in FIG. 3, is preferably thereby applied that the mold plate 1 is placed in a nickel bath 8. There the layer 7 is then applied to the cooling surfaces 5 without current.
  • Such Nickel layer 7 has a layer thermal conductivity S which, for example, is only approx. 5 W / mK is.
  • the layer 7 has a layer thickness d, which of course depends on the length of stay the mold plate 1 in the nickel bath 8 depends.
  • layer thicknesses d between 40 pm and 80 pm, z. B. 60 um, on the cooling surfaces 5 applicable.
  • a layer can also be used 7 with a layer thickness d of up to 200 ⁇ m.
  • the cooling grooves 5 have bottom surfaces 9 and side walls 10, while 5 webs 11 are arranged between the cooling minutes.
  • the layer 7 only to the floor surfaces 9.
  • layer 7 on the bottom surfaces 9 and the side walls 10 apply.
  • layer 7 over the entire area So both on floor surfaces 9 and 10 side walls 10 of the cooling minutes 5 also on the intermediate webs 11. According to FIG. 2, the two on the left Cooling minutes 5 fully coated, while the two right cooling grooves 5 only the bottom surfaces 9 are coated.
  • the layer 7 extends over the entire mold length L extends. This is the case with the outer cooling channels in FIG. 2.
  • the Layer length I is preferably between 300 mm and 500 mm, at least but 100 mm. This is the case with the inner cooling channels in FIG. 2.
  • the mold plate 1 according to FIG. 4 differs from the mold plate 1 according to Figure 2 in that instead of cooling minutes 5, the back 6 open are cooling bores 5 '.
  • the cooling holes 5 ' are connected to the Provide layer 7, again alternatively a complete or only partial Coating over the length of the cooling holes 5 'is possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Sorption Type Refrigeration Machines (AREA)

Claims (10)

  1. Plaque de lingotière (1) en cuivre d'une lingotière pour une installation de coulée continue, présentant une surface de travail (2) orientée, lors du fonctionnement de l'installation de coulée continue, vers une masse fondue métallique (3) ou un brin (4) de métal (partiellement) solidifié et au moins une surface de refroidissement (5, 5') en contact avec un agent de refroidissement lors du fonctionnement de l'installation de coulée continue, la plaque de la lingotière présentant une conductibilité thermique (W) et s'étendant dans un sens de coulée (x) sur une longueur de la lingotière (L), caractérisée en ce qu'on a appliqué sur la surface de refroidissement (5, 5'), au moins sur une partie, une couche (7) présentant une conductibilité thermique (S) de couche, en ce que la conductibilité thermique (S) de la couche (7) est inférieure à la conductibilité thermique (W) de la plaque de la lingotière (1), en ce que la (7) couche est essentiellement constituée de nickel et en ce que la couche (7) est une couche (7) appliquée sans courant sur la surface de refroidissement (5, 5') dans un bain de nickel (7).
  2. Plaque de lingotière selon la revendication 1, caractérisée en ce que la couche (7) est constituée à raison de cinq à vingt pour-cent de phosphore et pour le reste de nickel, à l'exception de quelques impuretés.
  3. Plaque de lingotière selon la revendication 1 ou 2, caractérisée en ce que la couche présente entre cinq et vingt pour-cent de phosphore, jusqu'à 30 % en volume de carbure de silicium et pour le reste du nickel, à l'exception de quelques impuretés.
  4. Plaque de lingotière selon l'une quelconque des revendications précédentes 1 à 3, caractérisée en ce que la couche (7) présente une épaisseur de couche (d) inférieure à 200 µm, en particulier entre 40 µm et 80 µm.
  5. Plaque de lingotière selon l'une quelconque des revendications précédentes 1 à 3, caractérisée en ce que la surface de refroidissement (5) est exécutée comme une rainure de refroidissement (5) disposée sur la surface postérieure (6) opposée à la surface de travail (2) et que celle-ci est recouverte de tous les côtés.
  6. Plaque de lingotière selon l'une quelconque des revendications précédentes 1 à 4, caractérisée en ce que la rainure de refroidissement (5) présente une surface de fond (9) et des parois latérales (10) et en ce que la couche (7) n'est appliquée que sur la surface de fond (9).
  7. Plaque de lingotière selon l'une quelconque des revendications précédentes 1 à 4, caractérisée en ce que la surface de refroidissement (5') est exécutée comme un trou de refroidissement (5') fermé par rapport à une surface postérieure (6) opposée à la surface de travail (2).
  8. Plaque de lingotière selon l'une quelconque des revendications précédentes 1 à 7, caractérisée en ce que la couche (7) s'étend à partir d'un bord supérieur (12) vu dans le sens de la coulée (x) sur une longueur de couche (1) et en ce que la longueur de couche (1) est inférieure à la longueur de la lingotière (L).
  9. Plaque de lingotière selon la revendication 8, caractérisée en ce que la longueur de couche (1) est d'au moins 100 mm, de préférence entre 300 mm et 500 mm.
  10. Plaque de lingotière selon l'une quelconque des revendications 1 à 7, caractérisée en ce que la couche (7) s'étend sur toute la longueur de la lingotière (L).
EP99972136A 1998-11-13 1999-11-04 Plaque a lingotieres d'une installation de coulee continue Expired - Lifetime EP1128919B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19852473 1998-11-13
DE19852473A DE19852473C5 (de) 1998-11-13 1998-11-13 Kokillenplatte einer Stranggießanlage
PCT/EP1999/008442 WO2000029146A1 (fr) 1998-11-13 1999-11-04 Plaque a lingotieres d'une installation de coulee continue

Publications (2)

Publication Number Publication Date
EP1128919A1 EP1128919A1 (fr) 2001-09-05
EP1128919B1 true EP1128919B1 (fr) 2002-09-25

Family

ID=7887743

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99972136A Expired - Lifetime EP1128919B1 (fr) 1998-11-13 1999-11-04 Plaque a lingotieres d'une installation de coulee continue

Country Status (7)

Country Link
EP (1) EP1128919B1 (fr)
KR (1) KR100627009B1 (fr)
AT (1) ATE224782T1 (fr)
CA (1) CA2351081C (fr)
DE (2) DE19852473C5 (fr)
ES (1) ES2185425T3 (fr)
WO (1) WO2000029146A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10148150B4 (de) * 2001-09-28 2014-05-22 Egon Evertz Kg (Gmbh & Co.) Flüssigkeitsgekühlte Stranggießkokille
DE10217906A1 (de) * 2002-04-23 2003-11-06 Sms Demag Ag Stranggießkokille für flüssige Metalle, insbesondere für flüssigen Stahl
TWI268821B (en) * 2002-04-27 2006-12-21 Sms Demag Ag Adjustment of heat transfer in continuous casting molds in particular in the region of the meniscus
DE102007028064A1 (de) 2007-06-19 2008-12-24 Siemens Ag Kokillenplatte für eine Kokille einer Stranggießanlage
WO2011093561A1 (fr) * 2010-01-29 2011-08-04 주식회사 풍산 Plaque de lingotière, ensemble de plaque de lingotière et moule de coulée
KR101111739B1 (ko) * 2010-01-29 2012-02-15 주식회사 풍산 몰드 플레이트, 몰드 플레이트 어셈블리 및 주조용 몰드
KR101649678B1 (ko) 2014-10-10 2016-08-19 주식회사 포스코건설 연속 주조용 몰드 플레이트의 결합장치
DE102017211108A1 (de) * 2017-06-30 2019-01-03 Thyssenkrupp Ag Kokillenplatte und Kokille für eine Stranggießanlage sowie Strangguss-Verfahren

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3536C (de) * M. DEMMER in Dortmund Eiserner Oberbau für Eisenbahnen mit dreiköpfiger Schiene
DE969000C (de) * 1951-03-09 1958-04-17 Boehler & Co Ag Geb Stranggiesskokille
DE1458168B1 (de) * 1964-12-28 1971-05-27 Mannesmann Ag Stranggiesskokille mit unterschiedlichem waermeleitvermoegen
DE2634633C2 (de) * 1976-07-31 1984-07-05 Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover Stranggießkokille aus einem Kupferwerkstoff, insbesondere zum Stranggießen von Stahl
GB2100154B (en) * 1981-04-27 1985-11-06 Sumitomo Metal Ind Molds for continuously casting steel
US4450893A (en) * 1981-04-27 1984-05-29 International Telephone And Telegraph Corporation Method and apparatus for casting metals and alloys
DE8315638U1 (de) * 1982-06-18 1988-03-10 Clecim, Courbevoie Platte für eine Stranggießkokille
DE3400220A1 (de) * 1984-01-05 1985-07-18 SMS Schloemann-Siemag AG, 4000 Düsseldorf Kokille zum stranggiessen von stahlband
DE3415050A1 (de) * 1984-04-21 1985-10-31 Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover Verfahren zur herstellung einer stranggiesskokille mit verschleissfester schicht
DE3909900A1 (de) * 1989-03-25 1990-10-18 Thyssen Stahl Ag Stranggiesskokille zum giessen von stahlband
US5716510A (en) * 1995-10-04 1998-02-10 Sms Schloemann-Siemag Inc. Method of making a continuous casting mold
DE59805207D1 (de) * 1997-10-01 2002-09-19 Concast Standard Ag Kokillenrohr für eine stranggiesskokille zum stranggiessen von stählen, insbesondere peritektischen stählen
DE19747305A1 (de) * 1997-10-25 1999-04-29 Km Europa Metal Ag Kokille für eine Stranggießanlage

Also Published As

Publication number Publication date
EP1128919A1 (fr) 2001-09-05
DE19852473C5 (de) 2005-10-06
ES2185425T3 (es) 2003-04-16
DE19852473C1 (de) 2000-05-31
WO2000029146A1 (fr) 2000-05-25
DE59902879D1 (de) 2002-10-31
ATE224782T1 (de) 2002-10-15
KR20010089433A (ko) 2001-10-06
CA2351081C (fr) 2008-04-15
KR100627009B1 (ko) 2006-09-22
CA2351081A1 (fr) 2000-05-25

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