EP1742751A2 - Gekühlte stranggiesskokille - Google Patents
Gekühlte stranggiesskokilleInfo
- Publication number
- EP1742751A2 EP1742751A2 EP05735723A EP05735723A EP1742751A2 EP 1742751 A2 EP1742751 A2 EP 1742751A2 EP 05735723 A EP05735723 A EP 05735723A EP 05735723 A EP05735723 A EP 05735723A EP 1742751 A2 EP1742751 A2 EP 1742751A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- casting
- cooling
- mold
- continuous casting
- shut
- 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.)
- Granted
Links
- 238000009749 continuous casting Methods 0.000 title claims abstract description 18
- 238000005266 casting Methods 0.000 claims abstract description 60
- 238000001816 cooling Methods 0.000 claims abstract description 51
- IHQKEDIOMGYHEB-UHFFFAOYSA-M sodium dimethylarsinate Chemical class [Na+].C[As](C)([O-])=O IHQKEDIOMGYHEB-UHFFFAOYSA-M 0.000 claims abstract description 21
- 239000002826 coolant Substances 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 3
- 229910052751 metal Inorganic materials 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 230000007423 decrease Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims 1
- 230000003247 decreasing effect Effects 0.000 claims 1
- 208000029152 Small face Diseases 0.000 abstract 4
- 239000000498 cooling water Substances 0.000 description 12
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
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
Definitions
- the invention relates to a cooled continuous casting mold for casting metal, in particular steel, with a casting format formed from two opposite broad sides and narrow sides.
- the broad sides have a cooling area designed for the maximum casting width, with a plurality of cooling channels with inlet and outlet channels extending in the casting direction and connected to a coolant circuit.
- the narrow sides are adjustable to set the desired casting width.
- the mold cooling of the broad sides is designed for the maximum casting width.
- the intensive mold cooling is also effective outside the adjustable narrow side. The cooling area is thus wider than the current casting width. As a result, intensive cooling is also carried out where there is no heat supply from the strand.
- the temperature drop in the immediate vicinity of the narrow sides can be up to 200 ° C and more.
- a continuous steel casting mold is known, the mold walls of which are provided with a plurality of cooling bores extending from top to bottom and connected to a cooling water circuit and which thus form a cooling region extending over the broad sides. It is proposed here in the area of the highest temperature load of the mold, i.e. the heating zone, to reduce the passage cross section of the cooling bores through displacement rods in order to increase the flow rate of the cooling water at these points and to increase the heat dissipation.
- the invention has for its object to provide a continuous casting mold for slab formats, in particular for thin slabs, in which, despite setting different casting formats, in particular smaller casting formats compared to the maximum casting format, a more uniform working side temperature of the broad sides can be set and in particular a sharp drop in temperature close to the narrow sides is reduced. In addition, the amounts of cooling water are to be reduced.
- the cooling channels and / or the inlet and / or the outlet channels of the wide mold sides in the adjustment range of the narrow sides and also within the Casting formats are at least partially or completely lockable.
- the blockage can take place in the mold plate, the steel intermediate plate of a cassette mold and / or the water tank.
- the shut-off can be done in the flow or return of the mold.
- Shutdown should be possible between an area of the narrow side plates up to the maximum cooling width. Shutting off is also possible in an area close to the narrow side, which can extend beyond the actual narrow side into the casting format, up to the maximum cooling width.
- the temperature of the working side of the broad sides in the region of the narrow side is made more uniform. Due to the more uniform temperature distribution on the working side of the broad sides in the area of the bathroom mirror, the melting of the mold powder and thus the surface quality of the cast product is improved.
- the cooling medium requirement in particular water requirement
- the heat transfer can be increased and thus the temperature increase on the working side due to the higher pouring rate can be at least partially compensated for.
- the cooling channels which extend at least over the adjustment range of the narrow sides can be completely or partially shut off. Calculations have shown that the cooling channels, which are up to 100 mm per side in the area close to the narrow side, also fit into the casting format extend, should be lockable to even out the temperature profiles of the broadsides.
- a uniform temperature distribution on the working side of the broad sides is achieved when the extent of the shutoff of the coolant flow to the center of the mold decreases or the shutoff of the cooling channels to the center of the mold becomes less. This can be achieved in that corresponding shut-off elements in the area close to the narrow side and / or in the casting format taper towards the center of the mold.
- the coolant is preferably water.
- the most even temperature distribution is achieved when the water speed in the area of the partially blocked cooling channels is a maximum of 25m / s and at least 0.5m / s.
- the water speed of the cooling ducts in the cooling area with the cooling ducts not blocked off is a minimum speed of 0.5 m / s. This is achieved by appropriately designed shut-off elements.
- the shutoff of the individual cooling channels is achieved by shutoff elements arranged on the narrow side support. These are preferably designed as bolts that control the inflow or outflow of the individual cooling channels.
- the shut-off elements can be moved with the respective narrow side or the narrow side support.
- the desired casting format or casting width is set via the narrow sides. In this position, the cooling channels on the broad sides near the narrow sides are at least partially blocked. In this way, there is no undesired overcooling of these areas of the broad sides, which has an advantageous effect on the melting behavior of the casting powder and thus on the surface quality of the strand product.
- Figure 1 is a plan view of a mold with wide and narrow sides and a / cooling water width adjustment.
- Fig. 2 is a side view of a mold and the representation of the average working side temperature curve below the bath level in a mold with and without cooling water width adjustment.
- Fig. 1 shows a plan view of a continuous casting mold 1, which is composed of two opposite broad sides 2, 3 and narrow sides 4, 5, which form the casting format for the respective slab between them.
- the narrow sides 4, 5 are adjustable between the broad sides 2, 3 in order to set a predetermined or desired casting format GF or a casting width.
- the cooling area 6 of the broad sides 2, 3 is designed in accordance with the maximum casting width.
- the broad sides 2, 3 have vertical cooling channels 7 in the form of bores, each of which is connected to a cooling water circuit by means of an inlet 8 and an outlet.
- cooling water flows through all the cooling channels 7 and the broad sides 2, 3 are cooled over the entire cooling area 6.
- the cooling channels 7 or the inlets 8 in the region 9 are at least partially shut off.
- cooling channels which extend into the casting format over the actual narrow side plate, tick, still cordoned off. It has been found that the partial blocking of the cooling channels can extend up to 100 mm on each side in the casting format.
- shutoff elements 10 which are fastened in the form of bolts to the carrier 11 of the narrow sides 4, 5 and are moved with the narrow side. They are tapered in the direction of the mold center and, due to this tapering end 12, exert a blocking influence on the inflows of the channels which decreases towards the mold center.
- Fig. 2 shows a side view of a mold with the two narrow sides 4, 5 and the representation of the average working side temperature curve below the bath level in a mold with (13a) and without (13b) cooling water width adjustment according to the invention.
- the bathroom mirror is designated 14.
- the cooling area 6 extends over the entire broadside of the mold, wherein the mold cooling can be reduced or completely shut off in adaptation to the shifted narrow sides. If the mold cooling is reduced or blocked in the area between the maximum casting format and the shifted narrow sides 4, 5, this has a positive effect on the homogenization of the working side temperature below the bath level, the working side temperature being constant up to the narrow sides, while it decreases sharply towards the narrow sides without influencing the cooling according to the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Sampling And Sample Adjustment (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004021899A DE102004021899A1 (de) | 2004-05-04 | 2004-05-04 | Gekühlte Stranggießkokille |
PCT/EP2005/004413 WO2005107978A2 (de) | 2004-05-04 | 2005-04-25 | Gekühlte stranggiesskokille |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1742751A2 true EP1742751A2 (de) | 2007-01-17 |
EP1742751B1 EP1742751B1 (de) | 2010-07-14 |
Family
ID=34978789
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05735723A Not-in-force EP1742751B1 (de) | 2004-05-04 | 2005-04-25 | Gekühlte stranggiesskokille |
Country Status (8)
Country | Link |
---|---|
US (1) | US20090199993A1 (de) |
EP (1) | EP1742751B1 (de) |
JP (1) | JP4819038B2 (de) |
CN (1) | CN100431739C (de) |
AT (1) | ATE473821T1 (de) |
DE (2) | DE102004021899A1 (de) |
RU (1) | RU2379155C2 (de) |
WO (1) | WO2005107978A2 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO347543B1 (en) * | 2008-11-21 | 2023-12-27 | Norsk Hydro As | Støpeutstyr for støping av valseblokk |
US8662145B2 (en) * | 2012-03-22 | 2014-03-04 | Novelis Inc. | Method of and apparatus for casting metal slab |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3627027A (en) * | 1969-10-06 | 1971-12-14 | Wiener Schwachstromwerke Gmbh | Casting mold assembly for casting continuous strip |
US4640337A (en) * | 1985-05-01 | 1987-02-03 | Gus Sevastakis | Continuous casting apparatus |
US4759400A (en) * | 1985-10-03 | 1988-07-26 | Kawasaki Steel Corporation | Belt type cast sheet continuous caster and prevention of melt leakage in such a caster |
JPS63144847A (ja) * | 1986-12-10 | 1988-06-17 | Kawasaki Steel Corp | ベルト式連続鋳造機のベルト冷却装置 |
JPS63203255A (ja) * | 1987-02-20 | 1988-08-23 | Hitachi Ltd | ベルト式連続鋳造機 |
JP2922252B2 (ja) * | 1990-04-18 | 1999-07-19 | 川崎製鉄株式会社 | 連続鋳造設備用モールド |
JPH04178246A (ja) * | 1990-11-13 | 1992-06-25 | Nkk Corp | 組立鋳型 |
DE4127333C2 (de) * | 1991-08-19 | 2000-02-24 | Schloemann Siemag Ag | Stahlstranggießkokille |
DE4403050C1 (de) * | 1994-01-28 | 1995-09-28 | Mannesmann Ag | Stranggießkokille zum Führen von Strängen |
JP3117391B2 (ja) * | 1995-08-02 | 2000-12-11 | 三菱重工業株式会社 | ベルト式連続鋳造装置 |
US5771958A (en) * | 1995-09-14 | 1998-06-30 | Ag Industries, Inc. | Mold for continuous casting system |
JPH10128513A (ja) * | 1996-10-30 | 1998-05-19 | Sumitomo Metal Ind Ltd | 連続鋳造用分割鋳型 |
CN2290433Y (zh) * | 1997-01-29 | 1998-09-09 | 原守喜 | 一种提高连铸拉速的冷却器 |
DE19802809A1 (de) * | 1998-01-27 | 1999-07-29 | Km Europa Metal Ag | Flüssigkeitsgekühlte Kokille |
-
2004
- 2004-05-04 DE DE102004021899A patent/DE102004021899A1/de not_active Withdrawn
-
2005
- 2005-04-25 WO PCT/EP2005/004413 patent/WO2005107978A2/de active Application Filing
- 2005-04-25 US US11/579,377 patent/US20090199993A1/en not_active Abandoned
- 2005-04-25 CN CNB2005800145122A patent/CN100431739C/zh not_active Expired - Fee Related
- 2005-04-25 RU RU2006142701/02A patent/RU2379155C2/ru not_active IP Right Cessation
- 2005-04-25 JP JP2007511941A patent/JP4819038B2/ja not_active Expired - Fee Related
- 2005-04-25 EP EP05735723A patent/EP1742751B1/de not_active Not-in-force
- 2005-04-25 AT AT05735723T patent/ATE473821T1/de active
- 2005-04-25 DE DE502005009905T patent/DE502005009905D1/de active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2005107978A2 * |
Also Published As
Publication number | Publication date |
---|---|
JP4819038B2 (ja) | 2011-11-16 |
WO2005107978A3 (de) | 2005-12-29 |
EP1742751B1 (de) | 2010-07-14 |
ATE473821T1 (de) | 2010-07-15 |
WO2005107978A2 (de) | 2005-11-17 |
RU2379155C2 (ru) | 2010-01-20 |
CN100431739C (zh) | 2008-11-12 |
JP2007536091A (ja) | 2007-12-13 |
US20090199993A1 (en) | 2009-08-13 |
CN1972771A (zh) | 2007-05-30 |
DE102004021899A1 (de) | 2005-12-01 |
DE502005009905D1 (de) | 2010-08-26 |
RU2006142701A (ru) | 2008-06-10 |
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