EP0911095B1 - Kokille für eine Stranggiessanlage - Google Patents
Kokille für eine Stranggiessanlage Download PDFInfo
- Publication number
- EP0911095B1 EP0911095B1 EP98119000A EP98119000A EP0911095B1 EP 0911095 B1 EP0911095 B1 EP 0911095B1 EP 98119000 A EP98119000 A EP 98119000A EP 98119000 A EP98119000 A EP 98119000A EP 0911095 B1 EP0911095 B1 EP 0911095B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mold
- plating
- mould
- coating
- nickel
- 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
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
- B22D11/04—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
- the invention relates to a mold for a continuous caster with a shaping Mold body made of a material with high thermal conductivity, such as copper or Copper alloy.
- Chill molds are used to produce full profiles in a continuous casting process used.
- the mold is one of the most important components of a continuous caster. The solidification of the melt begins in it.
- the basic structure usually consists of an outer steel structure and the actual shaping part of the mold, the mold body.
- the mold body today consists almost exclusively of copper or a copper alloy.
- the Steel jacket has the task of positioning the mold body and cooling ensure the necessary water cycle.
- the mold body is covered with an inner Coating made of a wear-resistant material such as nickel or chrome.
- a wear-resistant material such as nickel or chrome.
- Such a continuous casting mold with a wear protection layer works, for example from DE 31 42 196 C2. This can improve the friction behavior and thus an increase in the service life of the mold body can be achieved.
- the mold body In addition to the shape of the strand, the mold body thus has the essential Task, through continuous heat dissipation, the formation of an adequate to ensure thick, resistant and flawless strand shell.
- DD-A-3536 discloses a continuous casting mold with a layer of one Material that has a lower thermal conductivity than the mold material.
- the Layer is provided on the outer wall of the mold and can be made of scale exist or be designed as an electrolytically produced oxide layer.
- DE-C-969000 describes a continuous casting mold with a mold wall, which in its lower cooling area one or more layers from a worse has heat-conducting material.
- This lower layer can consist of iron.
- DE-A-3142196 discloses a continuous casting mold with an inner coating of the mold cavity.
- the coating should be in the lower area of the mold be provided, since here the hardened shell of the strand is the inner wall mechanically worn out.
- FR-A-2067289 also describes a coating or a partial coating Coating of the inner mold cavity. This is where inserts come in, which line the inner mold cavity at least in the area of the bathroom mirror.
- the invention is therefore based on the object to create a mold body, in which the heat dissipation in particular in the area of the mold level is reduced and better strand quality can be achieved.
- the core of the invention is the measure, the heat dissipation in the mold body by reducing a coating on the outside, the coating on a section beginning at the end on the pouring side in the height range of the Casting level is applied.
- the coating consists of a material with a lower thermal conductivity compared to the material of the mold body and made of nickel or a nickel alloy. This results in a Process-related reduced heat flow in the area of the mold level. The resulting higher temperatures have a positive effect on the quality of the Strand surface and the structure quality.
- the thickness and length of the outer coating is based on the particular casting and System parameters matched.
- the mold body can basically be a one-piece mold tube or a multi-part mold, for example a plate mold.
- a second independent solution to the problem is in the features of claim 2 to see.
- the one made of nickel or a nickel alloy Coating provided on the outside of the mold body and takes from Forehead linearly from the foot end.
- the Coating can target the shrinkage behavior of the material being cast Be taken into account.
- the heat dissipation performance increases in the casting direction to. In this way, the effective tuning of the solidification Available cooling section in the mold with regard to the shrinkage behavior of the strand.
- the coating is only on part of the Applied circumference of the mold body. This measure is particularly useful in the case of non-rotationally symmetrical mold bodies. With adjustable molds can it may be advantageous, for example, only the longitudinal plates with an outer coating to provide.
- the targeted coating can cause a disproportionate shrinkage of the Strands in individual areas, for example in corner areas, can be avoided. This ensures that the heat transfer over the entire circumference of the Strand is approximately uniform, so that over the entire cross section of the Strands a strand shell growing uniformly in thickness is achieved.
- a high quality and economical coating can be applied galvanically be (claim 4). It is also possible to use the coating as a thermal Apply spray layer, as provided for in claim 5.
- Nickel materials have already become the material for the inner wear protection layer proven. Therefore, there are often options for users Nickel plating of mold bodies given.
- Nickel has more than four times less thermal conductivity than copper. Accordingly, an outer coating made of nickel can be an effective one Reduction of heat dissipation and thus an increase in the temperature in the area of the mold level be effected.
- Nickel can be applied as a galvanic coating or as a metal spray coating become.
- the mold body can be completely on the outside or only be coated locally in the area of the mold level.
- the coating has a in the casting direction constant thickness.
- the transitions in the edge areas of the coating run continuously. In this way, voltage jumps are avoided.
- a coating according to claim 7, in which the thickness decreases in the casting direction can specifically take into account the shrinking behavior of the material to be cast be worn.
- the heat dissipation performance increases in the casting direction. In this way, the effective tuning can be made available for solidification standing cooling section in the mold with regard to the shrinking behavior of the Strangs take place.
- the reduction in the thickness of the outer coating can be linear or step-like respectively.
- FIG. 1 illustrates a mold tube 1 for the continuous casting of steel.
- the Mold tube 1 has a mold cavity 2, the cross section of which is on the pouring side
- the front end 3 is larger than the end end 4 on the strand exit side.
- the base body 5 of the mold tube 1 consists of a copper alloy, preferably based on copper / chrome / zircon (CuCrZr).
- the mold tube 1 On the outside 6, the mold tube 1 has a section A in the height range the coating level 7 on a coating 8.
- the coating 8 consists of a Material with a compared to the material of the mold tube 1 or Base body 5 lower thermal conductivity.
- Nickel in particular is a material well suited for the outer coating 8. Nickel can be used both as galvanic Coating as well as a thermal metal spray layer can be applied.
- the coating 8 reduces the heat flow and thus the heat dissipation of the mold tube 1 in the height range of the pouring level 7. This results in higher ones Wall temperatures in the initial phase of strand shell formation. This leads to an improvement in the surface quality of a steel strand. In particular micro cracks near the edges of the mold tube 1 can be avoided in this way.
- the coating 8 has an approximately constant thickness D 1 in the casting direction G. In the transition area 9, the coating 8 tapers continuously to the outside 6.
- the mold tube 1 is made with a wear protection layer 11 Chrome, which is about 80 microns thick.
- FIG. 2 Another embodiment of a mold tube 12 is shown in FIG. 2. This has an outer coating 14 on the pour-side end 13 to reduce heat dissipation.
- the coating 14 extends over the height range of the casting level 15, the thickness D 2 of the coating 14 decreasing in the casting direction G.
- a possible embodiment of the coating 14 provides for a thickness D 2 that decreases from 3 mm to 1 mm with a transition region 16 that is continuous at the end.
- FIG. 3 shows a detail from a further variant of a mold tube 17.
- the mold tube 17 has a coating 18 on the outside 19, the thickness D 3 of which decreases linearly from the front end 20 to the foot end 21.
- the heat dissipation in the mold tube 17 is reduced by the coating 18.
- the heat flow increases overall from the front end 20 of the mold tube 17 to the foot end 21.
- the mold body of a mold according to the invention does not necessarily have to be a mold tube his.
- the invention is equally advantageous in the case of multi-part configurations Casting molds such as plate molds.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Devices For Molds (AREA)
Description
Claims (8)
- Kokille für eine Stranggießanlage mit einem formgebenden Kokillenkörper (1, 12) aus einem Material hoher Wärmeleitfähigkeit, wie Kupfer oder einer Kupferlegierung, wobei der Kokillenkörper (1, 12) bereichsweise mit einer äußeren Beschichtung (8, 14) aus einem Material mit einer gegenüber dem Werkstoff des Kokillenkörpers (1, 12) niedrigeren Wärmeleitfähigkeit versehen ist, dadurch gekennzeichnet, dass eine Beschichtung (8, 14) auf einem am eingießseitigen Stirnende (3, 13) beginnenden Teilstück (A) im Höhenbereich des Gießspiegels (7, 15) aufgebracht ist und die Beschichtung (8, 14) aus Nickel oder einer Nickellegierung besteht.
- Kokille für eine Stranggießanlage mit einem formgebenden Kokillenkörper (17) aus einem Material hoher Wärmeleitfähigkeit, wie Kupfer oder eine Kupferlegierung, wobei der Kokillenkörper (17) mit einer äußeren Beschichtung (18) aus einem Material mit einer gegenüber dem Werkstoff des Kokillenkörpers (17) niedrigeren Wärmeleitfähigkeit versehen ist, dadurch gekennzeichnet, dass eine Beschichtung (18) an der Außenseite (19) vorgesehen ist, die vom Stirnende (20) zum Fußende (21) linear abnimmt und die Beschichtung (18) aus Nickel oder einer Nickellegierung besteht.
- Kokille nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Beschichtung (8, 14, 18) auf einen Teil des Umfangs des Kokillenkörpers (1, 12, 17) aufgebracht ist.
- Kokille nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Beschichtung (8, 14, 18) galvanisch aufgebracht ist.
- Kokille nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Beschichtung (8, 14, 18) als thermische Spritzschicht aufgebracht ist.
- Kokille nach einem der Ansprüche 1 oder 3 bis 5, dadurch gekennzeichnet, dass die Beschichtung (8) eine in Gießrichtung (G) konstante Dicke (D1) aufweist.
- Kokille nach einem der Ansprüche 1 oder 3 bis 5, dadurch gekennzeichnet, dass die Beschichtung (14) eine in Gießrichtung (G) abnehmende Dicke (D2) aufweist.
- Kokille nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Kokillenkörper (1) eine Innenbeschichtung (11) aufweist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19747305A DE19747305A1 (de) | 1997-10-25 | 1997-10-25 | Kokille für eine Stranggießanlage |
DE19747305 | 1997-10-25 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0911095A1 EP0911095A1 (de) | 1999-04-28 |
EP0911095B1 true EP0911095B1 (de) | 2004-09-22 |
EP0911095B2 EP0911095B2 (de) | 2010-07-21 |
Family
ID=7846694
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98119000A Expired - Lifetime EP0911095B2 (de) | 1997-10-25 | 1998-10-08 | Kokille für eine Stranggiessanlage |
Country Status (7)
Country | Link |
---|---|
US (1) | US5899259A (de) |
EP (1) | EP0911095B2 (de) |
JP (1) | JP4303809B2 (de) |
CN (1) | CN1075752C (de) |
AT (1) | ATE276848T1 (de) |
CA (1) | CA2247785C (de) |
DE (2) | DE19747305A1 (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19802809A1 (de) * | 1998-01-27 | 1999-07-29 | Km Europa Metal Ag | Flüssigkeitsgekühlte Kokille |
DE19852473C5 (de) * | 1998-11-13 | 2005-10-06 | Sms Demag Ag | Kokillenplatte einer Stranggießanlage |
CN100379137C (zh) * | 2005-07-21 | 2008-04-02 | 南京航空航天大学 | 零电压开关复合式交错并联双管正激三电平直流变换器 |
KR100792801B1 (ko) | 2006-12-15 | 2008-01-14 | 남기홍 | 튜브몰드 재생공법 |
JP4659796B2 (ja) * | 2007-08-31 | 2011-03-30 | 三島光産株式会社 | 連続鋳造用鋳型の補修方法及び補修された連続鋳造用鋳型 |
CN101992276A (zh) * | 2010-12-13 | 2011-03-30 | 西南铝业(集团)有限责任公司 | 一种铝合金结晶器 |
CN102069163B (zh) * | 2010-12-24 | 2013-11-13 | 中冶京诚工程技术有限公司 | 结晶器、生产铸坯的装置和方法、铸坯以及超大断面铸坯 |
CN102527958A (zh) * | 2011-12-09 | 2012-07-04 | 太原科技大学 | 用于连续铸钢的结晶装置 |
CN102527959A (zh) * | 2011-12-22 | 2012-07-04 | 莱芜钢铁集团有限公司 | 组合式结晶器 |
CN102554155A (zh) * | 2011-12-22 | 2012-07-11 | 莱芜钢铁集团有限公司 | 管式结晶器 |
KR101443788B1 (ko) * | 2012-08-09 | 2014-09-23 | 주식회사 포스코 | 주조용 주형 |
CN102974782B (zh) * | 2012-12-14 | 2015-01-21 | 莱芜钢铁集团有限公司 | H型管式结晶器 |
DE102017211108A1 (de) * | 2017-06-30 | 2019-01-03 | Thyssenkrupp Ag | Kokillenplatte und Kokille für eine Stranggießanlage sowie Strangguss-Verfahren |
CN108838352B (zh) * | 2018-05-25 | 2023-08-22 | 中冶连铸技术工程有限责任公司 | 一种双水套结构的结晶器 |
CN110125350B (zh) * | 2019-06-04 | 2024-08-13 | 中国重型机械研究院股份公司 | 用于板坯连铸机结晶器宽面的多层复合铜板及其制备方法 |
CN118045974A (zh) * | 2024-02-20 | 2024-05-17 | 常熟中佳新材料有限公司 | 一种复合结构水平连铸石墨结晶器装置 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD3536A (de) * | ||||
DE969000C (de) * | 1951-03-09 | 1958-04-17 | Boehler & Co Ag Geb | Stranggiesskokille |
BE758996A (fr) * | 1969-11-14 | 1971-04-30 | Kabel Metallwerke Ghh | Lingotiere de coulee continue pour la coulee d'un metal, en particulierde l'acier |
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 |
DE3142196C2 (de) * | 1981-10-24 | 1984-03-01 | Mishima Kosan Corp., Kitakyushu, Fukuoka | Stranggießkokille mit Verschleißschutzschicht |
EP0108744B1 (de) * | 1982-11-04 | 1988-08-17 | VOEST-ALPINE Aktiengesellschaft | Durchlaufkokille für eine Stranggiessanlage |
DE3400220A1 (de) † | 1984-01-05 | 1985-07-18 | SMS Schloemann-Siemag AG, 4000 Düsseldorf | Kokille zum stranggiessen von stahlband |
US5407499A (en) * | 1985-04-19 | 1995-04-18 | Km Kabelmetal A.G. | Making a mold for continuous casting |
JPS63119954A (ja) † | 1986-11-07 | 1988-05-24 | Sumitomo Metal Ind Ltd | 連続鋳造用超音波振動鋳型 |
US5778824A (en) * | 1996-01-31 | 1998-07-14 | Musgrave; Gary | Magnetic device and method for feeding aquatic animals |
-
1997
- 1997-10-25 DE DE19747305A patent/DE19747305A1/de not_active Ceased
-
1998
- 1998-09-15 CN CN98119193A patent/CN1075752C/zh not_active Expired - Fee Related
- 1998-09-18 CA CA002247785A patent/CA2247785C/en not_active Expired - Fee Related
- 1998-10-08 EP EP98119000A patent/EP0911095B2/de not_active Expired - Lifetime
- 1998-10-08 AT AT98119000T patent/ATE276848T1/de not_active IP Right Cessation
- 1998-10-08 DE DE59811984T patent/DE59811984D1/de not_active Expired - Lifetime
- 1998-10-21 US US09/176,743 patent/US5899259A/en not_active Expired - Lifetime
- 1998-10-23 JP JP30287198A patent/JP4303809B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE59811984D1 (de) | 2004-10-28 |
DE19747305A1 (de) | 1999-04-29 |
JPH11197800A (ja) | 1999-07-27 |
CA2247785C (en) | 2002-11-26 |
CN1215638A (zh) | 1999-05-05 |
EP0911095B2 (de) | 2010-07-21 |
US5899259A (en) | 1999-05-04 |
ATE276848T1 (de) | 2004-10-15 |
JP4303809B2 (ja) | 2009-07-29 |
CN1075752C (zh) | 2001-12-05 |
EP0911095A1 (de) | 1999-04-28 |
CA2247785A1 (en) | 1999-04-25 |
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