EP1128919B1 - Kokillenplatte einer stranggiessanlage - Google Patents
Kokillenplatte einer stranggiessanlage Download PDFInfo
- 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
Links
- 238000009749 continuous casting Methods 0.000 title claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 42
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052802 copper Inorganic materials 0.000 claims abstract description 10
- 239000010949 copper Substances 0.000 claims abstract description 10
- 239000002826 coolant Substances 0.000 claims abstract description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 42
- 229910052759 nickel Inorganic materials 0.000 claims description 22
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 2
- 238000005266 casting Methods 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 48
- 238000000576 coating method Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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)
Description
- Figur 1
- eine Stranggießkokille im Betrieb,
- Figur 2
- einen Ausschnitt einer Kokillenplatte mit Kühlelementen,
- Figur 3
- ein Beschichtungsverfahren und
- Figur 4
- einen weiteren Kokillenplattenausschnitt mit Kühlbohrungen.
- 1
- Kokillenplatte
- 2
- Arbeitsfläche
- 3
- Metallschmelze
- 4
- Metallstrang
- 5
- Kühlflächen/Kühlnuten
- 5'
- Kühlflächen/Kühlbohrungen
- 6
- Rückseite
- 7
- Schicht
- 8
- Nickelbad
- 9
- Bodenfläche
- 10
- Seitenwände
- 11
- Stege
- 12
- oberer Rand
- d
- Schichtdicke
- I, L
- Längen
- N, S, W
- Leitfähigkeiten
- x
- Gießrichtung
Claims (10)
- Kokillenplatte (1) aus Kupfer einer Kokille für eine Stranggießanlage, mit einer im Betrieb der Stranggießanlage einer Metallschmelze (3) bzw. einem (teil-) erstarrten Metallstrang (4) zugewandten Arbeitsfläche (2) und mindestens einer im Betrieb der Stranggießanlage ein Kühlmedium kontaktierenden Kühlfläche (5, 5'), wobei die Kokillenplatte eine Wärmeleitfähigkeit (W) aufweist und sich in einer Gießrichtung (x) über eine Kokillenlänge (L) erstreckt,
dadurch gekennzeichnet, daß auf die Kühlfläche (5, 5') zumindest in einem Teilbereich eine Schicht (7) mit einer Schicht-Wärmeleitfähigkeit (S) aufgebracht ist, daß die Wärmeleitfähigkeit (S) der Schicht (7) kleiner als die Wärmeleitfähigkeit (W) der Kokillenplatte (1) ist, daß die Schicht (7) im wesentlichen aus Nickel besteht und daß die Schicht (7) eine in einem Nickelbad (8) stromlos auf die Kühlfläche (5, 5') aufgebrachte Schicht (7) ist. - Kokillenplatte nach Anspruch 1,
dadurch gekennzeichnet, daß die Schicht (7) zu fünf bis zwanzig Prozent aus Phosphor und im übrigen - abgesehen von geringfügigen Verunreinigungen - aus Nickel besteht. - Kokillenplatte nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die Schicht (7) zwischen fünf und zwanzig Prozent Phosphor, bis zu 30 Volumenprozent Siliziumkarbid, und im übrigen - abgesehen von geringfügigen Verunreinigungen - Nickel aufweist. - Kokillenplatte nach einem der vorherigen Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß die Schicht (7) eine Schichtdicke (d) unter 200 µm, insbesondere zwischen 40 µm und 80 µm, aufweist. - Kokillenplatte nach einem der vorherigen Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß die Kühlfläche (5) als auf einer der Arbeitsfläche (2) gegenüberliegenden Rückseite (6) angeordnete Kühlnut (5) ausgebildet ist, und diese allseitig beschichtet ist. - Kokillenplatte nach einem der vorherigen Ansprüche 1 bis 4,
dadurch gekennzeichnet, daß die Kühlnut (5) eine Bodenfläche (9) und Seitenwände (10) aufweist und daß die Schicht (7) nur auf die Bodenfläche (9) aufgebracht ist. - Kokillenplatte nach einem der vorherigen Ansprüche 1 bis 4,
dadurch gekennzeichnet, daß die Kühlfläche (5') als bezüglich einer der Arbeitsfläche (2) gegenüberliegenden Rückseite (6) geschlossene Kühlbohrung (5') ausgebildet ist. - Kokillenplatte nach einem der vorherigen Ansprüche 1 bis 7,
dadurch gekennzeichnet, daß die Schicht (7) sich von einem in Gießrichtung (x) gesehen oberen Rand (12) über eine Schichtlänge (1) erstreckt und daß die Schichtlänge (1) kleiner als die Kokillenlänge (L) ist. - Kokillenplatte nach Anspruch 8,
dadurch gekennzeichnet, daß die Schichtlänge (1) mindestens 100 mm, vorzugsweise zwischen 300 mm und 500 mm, beträgt. - Kokillenplatte nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, daß die Schicht (7) sich über die gesamte Kokillenlänge (L) erstreckt.
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 (de) | 1998-11-13 | 1999-11-04 | Kokillenplatte einer stranggiessanlage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1128919A1 EP1128919A1 (de) | 2001-09-05 |
EP1128919B1 true EP1128919B1 (de) | 2002-09-25 |
Family
ID=7887743
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99972136A Expired - Lifetime EP1128919B1 (de) | 1998-11-13 | 1999-11-04 | Kokillenplatte einer stranggiessanlage |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1128919B1 (de) |
KR (1) | KR100627009B1 (de) |
AT (1) | ATE224782T1 (de) |
CA (1) | CA2351081C (de) |
DE (2) | DE19852473C5 (de) |
ES (1) | ES2185425T3 (de) |
WO (1) | WO2000029146A1 (de) |
Families Citing this family (8)
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 (ko) * | 2010-01-29 | 2011-08-04 | 주식회사 풍산 | 몰드 플레이트, 몰드 플레이트 어셈블리 및 주조용 몰드 |
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)
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 |
-
1998
- 1998-11-13 DE DE19852473A patent/DE19852473C5/de not_active Expired - Fee Related
-
1999
- 1999-11-04 ES ES99972136T patent/ES2185425T3/es not_active Expired - Lifetime
- 1999-11-04 EP EP99972136A patent/EP1128919B1/de not_active Expired - Lifetime
- 1999-11-04 KR KR1020017005885A patent/KR100627009B1/ko not_active IP Right Cessation
- 1999-11-04 DE DE59902879T patent/DE59902879D1/de not_active Expired - Lifetime
- 1999-11-04 WO PCT/EP1999/008442 patent/WO2000029146A1/de active IP Right Grant
- 1999-11-04 AT AT99972136T patent/ATE224782T1/de active
- 1999-11-04 CA CA002351081A patent/CA2351081C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1128919A1 (de) | 2001-09-05 |
DE19852473C5 (de) | 2005-10-06 |
ES2185425T3 (es) | 2003-04-16 |
DE19852473C1 (de) | 2000-05-31 |
WO2000029146A1 (de) | 2000-05-25 |
DE59902879D1 (de) | 2002-10-31 |
ATE224782T1 (de) | 2002-10-15 |
KR20010089433A (ko) | 2001-10-06 |
CA2351081C (en) | 2008-04-15 |
KR100627009B1 (ko) | 2006-09-22 |
CA2351081A1 (en) | 2000-05-25 |
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