CN1772415A - Technological process of overbearing liquid core of continuously cast slab - Google Patents
Technological process of overbearing liquid core of continuously cast slab Download PDFInfo
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- CN1772415A CN1772415A CN 200510098812 CN200510098812A CN1772415A CN 1772415 A CN1772415 A CN 1772415A CN 200510098812 CN200510098812 CN 200510098812 CN 200510098812 A CN200510098812 A CN 200510098812A CN 1772415 A CN1772415 A CN 1772415A
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- cast slab
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Abstract
The present invention overbears liquid core of continuously cast slab in a casting-rolling machine, and the technological process includes continuous casting of molten steel in crystallizer of continuously casting machine, controlled cooling, high pressure water descaling, and overbearing liquid core in casting-rolling machine. The present invention utilizes the cooling section of continuously casting machine for control cooling of the continuously cast slab, so that the continuously cast slab into the casting-rolling machine has proper slab shell thickness and side temperature, and completes the liquid core overbearing in the casting-rolling machine relatively easily. Owing to the liquid core overbearing in the casting-rolling machine, rather than in the cooling section, the present invention can take serial advanced technological measures to raise the quality of continuously cast slab and improve production state.
Description
Technical field
The present invention relates to metal rolledly, be specifically related to a kind of technological process of overbearing liquid core of continuously cast slab.
Background technology
At present, the sheet billet continuous casting technology is widely used in iron and steel production.Production has decisive influence to the quality of continuous casting billet to steel.The liquid core is depressed technology and has effectively been improved the steel internal soundness, more and more is applied to continuous casting production.It is to adopt the compression of the method realization liquid core of depressing continuously at each cooling section of conticaster that the existing liquid core that is applied to continuous casting billet is depressed technology.This liquid core reduction method makes the conticaster cooling section become extremely complicated.Each pinch roll all needs Position Control accurately.And bringing the wearing and tearing of roller to accelerate thus, resistance of billet withdrawal strengthens.Accident-proneness.
Summary of the invention
The object of the present invention is to provide a kind of liquid core to depress and be easy to realize that technical risk is little, and can effectively improve the technological process of overbearing liquid core of continuously cast slab of conticaster production status.
Technological process of overbearing liquid core of continuously cast slab of the present invention uses casting and rolling machine to finish the liquid core of continuous casting billet is depressed, and its technological process is: conticaster crystallizer molten steel direct casting-control cooling-high-pressure water descaling-casting and rolling machine liquid core is depressed.
The relative reduction ratio that process casting and rolling machine liquid core of the present invention is depressed is 10-30%; Described casting and rolling machine is two rollers, four-high mill; The thickness of continuous casting steel billet is 50-300mm.
The present invention utilizes the cooling section of conticaster that continuous casting billet is controlled cooling, make the continuous casting billet that enters casting and rolling machine have suitable shell thickness and limit portion temperature, satisfy the control of metallurgical length, and finish through casting and rolling machine the liquid core of continuous casting billet is depressed, thereby the liquid core being depressed become is easy to realize.Technical risk is little.Replace cooling section to depress owing to use casting and rolling machine to depress, make the cooling section of conticaster and crystallizer be convenient to adopt a series of mature technologies that are suitable for the high-quality continuous casting billet, thereby improve the inherence and the surface quality of continuous casting billet, and the production status of conticaster is improved.
Description of drawings
Accompanying drawing is a production-line arrangement schematic diagram of realizing process of the present invention.Among the figure: the 1-tundish; The 2-crystallizer; The 3-0# cooling section; The 4-1# cooling section; The 5-2# cooling section; The 6-high pressure water descaling device; 7-casting unit.
The specific embodiment
In conjunction with the accompanying drawings the specific embodiment of the present invention is described:
Provide as accompanying drawing, the present invention carries out the direct casting of conticaster crystallizer molten steel by tundish 1, crystallizer 2, utilizes 0#, 1#, 2 # cooling section 3,4,5 to realize continuous casting billet control cooling.Wherein crystallizer 2 can adopt dull and stereotyped, multiple suitable form funnel type, lenticular lens type.Cooling section 3,4,5 employings are dry and cold and the aqueous vapor cooling is combined, so that control the thickness and the limit portion temperature of continuous casting billet base shell better.High-pressure water descaling is undertaken by the water-saving high-pressure water descaling machine 6 that is arranged at the cooling section back, and it has dual purpose: remove iron sheet on the one hand, cc billet surface quality is improved; Reduce casting blank surface temperature on the other hand, increase its intensity, avoid the bleed-out accident.Closely be connected and finish casting and rolling machine liquid core in the casting unit 7 of descaling mill back and depress.Casting and rolling machine can adopt two rollers or four-high mill.Big because of duo mill working roll footpath, help nipping, roll campaign is long, can reduce the shutdown number of times, preferred duo mill.On casting and rolling machine, give the drafts of relative reduction ratio 10-30%, make the liquid core seam of strand.Behind the casting and rolling machine continuous casting billet can be directly rolling or cut off after to send into steel rolling production-line rolling.
That technological process of overbearing liquid core of continuously cast slab of the present invention is applicable to is thin, in, the conticaster of thick three kinds of specifications.Continuous casting steel billet thickness is 50-300mm.
Claims (4)
1, a kind of technological process of overbearing liquid core of continuously cast slab is characterized in that its uses casting and rolling machine to finish the liquid core of continuous casting billet is depressed, and its technological process is: conticaster crystallizer molten steel direct casting-control cooling-high-pressure water descaling-casting and rolling machine liquid core is depressed.
2, technological process of overbearing liquid core of continuously cast slab according to claim 1: it is characterized in that the relative reduction ratio that casting and rolling machine liquid core is depressed is 10-30%.
3, technological process of overbearing liquid core of continuously cast slab according to claim 1 is characterized in that described casting and rolling machine is two rollers, four-high mill.
4, according to claim 1,2,3 described technological process of overbearing liquid core of continuously cast slab, the thickness that it is characterized in that continuous casting steel billet is 50-300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510098812 CN1772415A (en) | 2005-09-01 | 2005-09-01 | Technological process of overbearing liquid core of continuously cast slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510098812 CN1772415A (en) | 2005-09-01 | 2005-09-01 | Technological process of overbearing liquid core of continuously cast slab |
Publications (1)
| Publication Number | Publication Date |
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| CN1772415A true CN1772415A (en) | 2006-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510098812 Pending CN1772415A (en) | 2005-09-01 | 2005-09-01 | Technological process of overbearing liquid core of continuously cast slab |
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| CN (1) | CN1772415A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189102A (en) * | 2010-03-09 | 2011-09-21 | 中冶东方工程技术有限公司上海分公司 | Method for rolling liquid core under heavy reduction rate by virtue of online thickness regulating roll by utilizing continuous casting machine |
| CN101618398B (en) * | 2009-08-06 | 2013-03-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for controlling internal defects of steel |
| CN104084429A (en) * | 2014-07-11 | 2014-10-08 | 中冶东方工程技术有限公司 | Rolling reduction control method under large liquid core pressure |
| CN108435793A (en) * | 2018-04-09 | 2018-08-24 | 钢铁研究总院华东分院 | A kind of rolling with liquid core production technology of wear-resistant ball steel |
| CN110087801A (en) * | 2016-12-22 | 2019-08-02 | 首要金属科技奥地利有限责任公司 | For continuously manufacturing the method for the hot-strip of winding in rolling casting bonding equipment, method and rolling casting bonding equipment for starting rolling casting bonding equipment |
-
2005
- 2005-09-01 CN CN 200510098812 patent/CN1772415A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101618398B (en) * | 2009-08-06 | 2013-03-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for controlling internal defects of steel |
| CN102189102A (en) * | 2010-03-09 | 2011-09-21 | 中冶东方工程技术有限公司上海分公司 | Method for rolling liquid core under heavy reduction rate by virtue of online thickness regulating roll by utilizing continuous casting machine |
| CN102189102B (en) * | 2010-03-09 | 2013-02-06 | 中冶东方工程技术有限公司秦皇岛研究设计院 | Method for rolling liquid core under heavy reduction rate by virtue of online thickness regulating roll by utilizing continuous casting machine |
| CN104084429A (en) * | 2014-07-11 | 2014-10-08 | 中冶东方工程技术有限公司 | Rolling reduction control method under large liquid core pressure |
| CN104084429B (en) * | 2014-07-11 | 2015-09-23 | 中冶东方工程技术有限公司 | A kind of liquid core large pressure roll reduction control method |
| CN110087801A (en) * | 2016-12-22 | 2019-08-02 | 首要金属科技奥地利有限责任公司 | For continuously manufacturing the method for the hot-strip of winding in rolling casting bonding equipment, method and rolling casting bonding equipment for starting rolling casting bonding equipment |
| CN110087801B (en) * | 2016-12-22 | 2021-06-25 | 首要金属科技奥地利有限责任公司 | Method for continuously producing a wound hot-rolled steel strip in a combined casting and rolling installation |
| CN108435793A (en) * | 2018-04-09 | 2018-08-24 | 钢铁研究总院华东分院 | A kind of rolling with liquid core production technology of wear-resistant ball steel |
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