CN2652559Y - Uniform cooling high efficiency crystalizer for steelmaking continuous casting - Google Patents
Uniform cooling high efficiency crystalizer for steelmaking continuous casting Download PDFInfo
- Publication number
- CN2652559Y CN2652559Y CN 03262727 CN03262727U CN2652559Y CN 2652559 Y CN2652559 Y CN 2652559Y CN 03262727 CN03262727 CN 03262727 CN 03262727 U CN03262727 U CN 03262727U CN 2652559 Y CN2652559 Y CN 2652559Y
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- Prior art keywords
- copper pipe
- steel
- continuous casting
- crystallizer
- cooling
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Abstract
The utility model relates to a smooth cooling and high efficient crystallizer for continuous casting of steel-making, which can accurately reduces the cooling strength of a pipe wall at corner of a copper pipe of the crystallizer while increase cooling of edges to make the cooling strength of a corner of a copper pipe is equal to the edge, significantly improve the cooling strength of the whole crystallizer and efficiently improve quality of blanks and continuous casting. the pipe wall of the copper pipe corner of the utility model is an alveolate protruding that gradually reduces along the pipe wall until equal to the pipe wall at edges. The exterior of the outer pipe wall of the copper pipe is undee.
Description
One, technical field:
The utility model relates to evenly cooling high-efficiency mould of a kind of steel-making continuous casting that is used on the steel-making continuous casting machine.
Two, background technology:
Crystallizer is called as the heart of conticaster, it make molten steel evenly, cooled and solidified apace, form the base shell that thickness is even, surface quality is good and also make steel billet successfully pull out crystallizer.The quality of crystallizer performance is directly connected to efficient and the quality that continuous casting is produced.The basic structure of billet caster crystallizer is to leave the water flowing of water seam between square copper pipe overcoat shape identical water jacket, copper pipe and the water jacket with the cooling molten steel.Another kind of structure spray crystallizer adopts spraying cooling water spray copper pipe with cooling molten steel wherein.Since easily stop up the spray water nozzle, higher to water quality requirement, the existing less employing of newly-built conticaster.
Molten steel pours into behind the crystallizer copper pipe under the effect of cooling water, solidifies along the crystallizer copper inside pipe wall to form initial solidification shell and thickening gradually.Owing to solidify and produce to shrink and between base shell and copper pipe inwall, form air gap, it along copper pipe vertically along with the base shell thickens and moves down and produces.Because of the bight of copper pipe cross section is a Two-Dimensional Heat, its cooling is more strong, so at first produce air gap, makes bight base shell growth slack-off.And base shell limit portion still is close to the copper pipe inwall and solidifies with very high speed, and setting rate, thickness and the temperature of bight and limit portion base shell is irregular and produce stress, easily produces problems such as corner crack and bleed-out.The thermal resistance that general air gap is produced accounts for more than 80% of crystallizer entire thermal resistance, it has reduced the intensity of cooling of crystallizer, the speed of growth of having slowed down the base shell widely, and the bight air gap not only reduces casting efficiency also easily to be caused steel billet chink, bleed-out and influence billet quality.So eliminating or reducing the copper pipe air gap is a key link that improves crystallizer and even continuous casting production efficiency and quality.
The development of steel industry high-efficient continuous casting technology has obtained the effect of highly significant rapidly.But still need solve the difficult problem of crystallizer heat transfer efficiency.The high-efficiency mould copper pipe of existing use mostly is simple continuous tapering or many taperings, and it has mainly solved the vertical air gap of copper pipe and copper pipe cross section upper corner air gap problem still exists.The bight air gap has reduced the heat transfer efficiency of crystallizer, causes shell thickness irregular, has increased the tendency of longitudinal corner crack, and that has also limited conticaster draws ingot speed.At this problem, various types of curved surface crystallizers such as convex surface and concave surface have been developed both at home and abroad, for example " brilliant " crystallizer, Beijing metallurgical equipment graduate " highly effective curved face crystallizer " etc. of VAI, draw the ingot speed and the billet quality of curved surface crystallizer all have significantly raising, but in actual production, use less, domestic substantially all the use except that indivedual steel mills faced crystallizer copper pipe directly, also is that use of report lacked more to the curved surface crystallizer abroad.Main cause be the curved surface crystallizer to continuous casting process conditional request height, technical cost is bigger.Because its shrinkage-compensating all is the process accurate Calculation, controlling each technological parameter with strictness is prerequisite, otherwise will influence actual effect.In addition, because the process tolerance of curved surface crystallizer is too little, the operation during to actual production requires also higher.
Three, utility model content:
The utility model is in order to solve the weak point in the above-mentioned background technology, provide a kind of steel-making continuous casting with evenly cooling off high-efficiency mould, it can reduce the intensity of cooling of crystallizer copper pipe bight tube wall exactly, increase the cooling of limit portion simultaneously, the copper pipe bight is equated with limit portion intensity of cooling, improve the intensity of cooling of whole crystallizer greatly, effectively improved slab quality and casting efficiency.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of steel-making continuous casting is with evenly cooling off high-efficiency mould, and its special character is: comprise the copper pipe of crystallizer, the tube wall outside, copper pipe bight of described crystallizer is a projection.
Above-mentioned projection can be cellular projection or composite structure.
Above-mentioned cellular projection can longitudinally reduce downwards up to equating with limit portion tube wall gradually at the copper pipe epimere.
Above-mentioned copper pipe outer wall limit portion can adopt waveform.
Above-mentioned copper pipe hypomere bight back draught can be less than epimere bight back draught.
Above-mentioned copper pipe inner chamber can adopt continuous tapering curve.
Above-mentioned copper pipe inner chamber can adopt many taperings curve.
Above-mentioned copper pipe inner chamber can adopt single tapering curve.
Compared with prior art, the advantage and the effect that the utlity model has are as follows:
1, the utility model makes the intensity of cooling in copper pipe bight identical with limit portion, the intensity of cooling that is one week of copper pipe cross section is identical, then the setting rate and the thickness in one week of base shell are even, have eliminated the condition that bight air gap and base shell bight stress produce, and have also improved the intensity of cooling of crystallizer significantly.Its result will improve casting speed and billet quality significantly.Will evenly cool off the principle and the structure of curved surface crystallizer complexity such as directly perceived, the clear and definite principle contrast brilliant of high-efficiency mould, curved face type, effect should be with it quite or better;
2, the utility model process tolerance is big, and the technological transformation expense is low, is beneficial to production operation.The copper pipe bight is different separately with the thermal conductivity factor of limit portion material, but constant substantially constant, when the process conditions of crystallizer such as liquid steel temperature, carbon content, coolant water temperature, when fluctuation takes place hydraulic pressure, the hot-fluid of bight and limit portion will distribute by its thermal conductivity factor separately, still keep the even of copper pipe bight and limit portion intensity of cooling.So only need change crystallizer copper pipe when conticaster is transformed and water jacket two important parts get final product.
3, the utility model adapts to the crystallizer of all kinds of back draughts, and copper pipe inner chamber back draught only solves the base shell and vertically shrinks, and bight air gap problem is in the outside solution of copper pipe.Greatly simplify the contraction problem of two aspects in length and breadth, be convenient to the design of crystallizer copper pipe and continuous casting process, adapted to continuous tapering, many taperings and all kinds of copper pipes of single tapering.
Four, description of drawings:
Accompanying drawing is a structural representation of the present utility model.
Five, the specific embodiment:
Referring to accompanying drawing, the utility model adopts the measure that increases the bight wall resistance at the basic reason of crystallizer copper pipe cross section bight intensity of cooling greater than limit portion, makes the bight identical with the intensity of cooling of limit portion, thereby makes the even cooled and solidified of base shell.The utility model adopts the technology of applying high voltage casting and composite, cellular projection 1 is made in tube wall outside, copper pipe epimere bight, also can be made into composite structure, accurately increase its thermal resistance, thermal resistance is evenly reduced to limit portion by the bight, make the intensity of cooling in one week of copper pipe cross section identical, cellular projection 1 longitudinally reduces downwards up to equating with limit portion tube wall gradually at the copper pipe epimere, and the thermal resistance of corresponding copper pipe bight tube wall longitudinally reduces downwards up to equating with limit portion tube wall gradually at the copper pipe epimere.The tube wall bight keeps the copper pipe inwall for facing shape directly because of the part that the increase thermal resistance thickens is added in the copper pipe outer wall.Be that the copper pipe outer wall solves cross section bight and the irregular problem of limit portion cooling, the copper pipe inner chamber is only considered to solve the air gap that the base shell vertically shrinks, and can adopt continuous tapering, many taperings or single tapering curve.In addition, copper pipe outer wall limit portion adopts waveform 2 to strengthen heat transfer area, improves limit portion intensity of cooling, and adopts and reduce copper pipe hypomere bight back draught, to reduce the frictional force of copper pipe and base shell.
Claims (8)
1, a kind of steel-making continuous casting is with evenly cooling off high-efficiency mould, and it is characterized in that: comprise the copper pipe of crystallizer, the tube wall outside, copper pipe bight of described crystallizer is a projection.
2, a kind of steel-making continuous casting according to claim 1 is with evenly cooling off high-efficiency mould, and it is characterized in that: described projection is cellular projection (1) or composite structure.
3, a kind of steel-making continuous casting according to claim 2 is characterized in that with even cooling high-efficiency mould: described cellular projection (1) longitudinally reduces downwards up to equating with limit portion tube wall gradually at the copper pipe epimere.
4, a kind of steel-making continuous casting according to claim 3 is with evenly cooling off high-efficiency mould, and it is characterized in that: described copper pipe outer wall limit portion adopts waveform (2).
5, a kind of steel-making continuous casting according to claim 4 is with evenly cooling off high-efficiency mould, and it is characterized in that: described copper pipe hypomere bight back draught is less than epimere bight back draught.
6, according to claim 1,2,3, evenly cooling high-efficiency mould of 4 or 5 described a kind of steel-making continuous castings, it is characterized in that: described copper pipe inner chamber adopts continuous tapering curve.
7, according to claim 1,2,3, evenly cooling high-efficiency mould of 4 or 5 described a kind of steel-making continuous castings, it is characterized in that: described copper pipe inner chamber adopts many taperings curve.
8, according to claim 1,2,3, evenly cooling high-efficiency mould of 4 or 5 described a kind of steel-making continuous castings, it is characterized in that: described copper pipe inner chamber adopts single tapering curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03262727 CN2652559Y (en) | 2003-09-05 | 2003-09-05 | Uniform cooling high efficiency crystalizer for steelmaking continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03262727 CN2652559Y (en) | 2003-09-05 | 2003-09-05 | Uniform cooling high efficiency crystalizer for steelmaking continuous casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2652559Y true CN2652559Y (en) | 2004-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03262727 Expired - Fee Related CN2652559Y (en) | 2003-09-05 | 2003-09-05 | Uniform cooling high efficiency crystalizer for steelmaking continuous casting |
Country Status (1)
| Country | Link |
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| CN (1) | CN2652559Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103084550A (en) * | 2011-10-28 | 2013-05-08 | 宝山钢铁股份有限公司 | Method for optimizing continuous casting crystallizer angle portion heat transmission and continuous casting crystallizer |
| CN104185519A (en) * | 2012-04-02 | 2014-12-03 | 株式会社神户制钢所 | Mold for continuous casting of titanium or titanium alloy ingot, and continuous casting device provided with same |
| CN104254413A (en) * | 2011-12-23 | 2014-12-31 | 达涅利机械设备股份公司 | Crystallizer for continuous casting |
| CN104624990A (en) * | 2015-02-26 | 2015-05-20 | 周嘉平 | Even-cooling crystallizer copper tube and manufacturing method thereof |
| CN108746526A (en) * | 2018-06-29 | 2018-11-06 | 攀钢集团攀枝花钢铁研究院有限公司 | The continuous cast method of bloom Properties of Heavy Rail Steel corner quality control |
-
2003
- 2003-09-05 CN CN 03262727 patent/CN2652559Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103084550A (en) * | 2011-10-28 | 2013-05-08 | 宝山钢铁股份有限公司 | Method for optimizing continuous casting crystallizer angle portion heat transmission and continuous casting crystallizer |
| CN104254413A (en) * | 2011-12-23 | 2014-12-31 | 达涅利机械设备股份公司 | Crystallizer for continuous casting |
| CN104254413B (en) * | 2011-12-23 | 2016-04-13 | 达涅利机械设备股份公司 | For the crystallizer cast continuously |
| CN104185519A (en) * | 2012-04-02 | 2014-12-03 | 株式会社神户制钢所 | Mold for continuous casting of titanium or titanium alloy ingot, and continuous casting device provided with same |
| CN104185519B (en) * | 2012-04-02 | 2016-02-10 | 株式会社神户制钢所 | The mold of the continuous casting of the ingot casting be made up of titanium or titanium alloy and possess the continuous casting apparatus of this mold |
| EP2835191A4 (en) * | 2012-04-02 | 2016-04-06 | Kobe Steel Ltd | Mold for continuous casting of titanium or titanium alloy ingot, and continuous casting device provided with same |
| CN104624990A (en) * | 2015-02-26 | 2015-05-20 | 周嘉平 | Even-cooling crystallizer copper tube and manufacturing method thereof |
| CN104624990B (en) * | 2015-02-26 | 2023-08-25 | 周嘉平 | Copper pipe of uniform cooling crystallizer and manufacturing method thereof |
| CN108746526A (en) * | 2018-06-29 | 2018-11-06 | 攀钢集团攀枝花钢铁研究院有限公司 | The continuous cast method of bloom Properties of Heavy Rail Steel corner quality control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041103 |