Title:
METHODE FOR PRODUCING WIDE FLAT STEEL BY THIN SLAB CONTINUOUS CASTING AND ROLLING AND THE SYSTEM THEREOF
Document Type and Number:
WIPO Patent Application WO/2009/076890
Kind Code:
A1
Abstract:
Disclosed are a method for producing wide flat steel by thin slab continuous casting and rolling and the system thereof. The method includes the following steps: the molten steel is first continuously cast into a thin slab of 50~90mm thickness; then the thin slab is carried out even heating, electromagnetic induction heating, surface descaling, hot strip rolling, laminar flow cooling and coiling. Through regulating the technological parameters of the method, the solid solution and precipitation behaviors of carbon, nitrogen and sulfide in steel are controlled, and finally, qualified wide flat steel can be obtained. The system mainly consist of a slab continuous caster, a slab shearing equipment, a roller-hearth furnace, a slab electromagnetic induction heating stove, a high-pressure water descaling device, a hot strip mill, a laminar flow cooling device and a steel strip coiling apparatus which are successively connected. The slab electromagnetic induction heating stove is comprised of a quick electromagnetic induction zone and an electromagnetic induction holding zone. The method and the system can effectively control the solid solution and precipitation behaviors of carbon, nitrogen and sulfide in steel, and produce high quality of broad hot strips with lower cost and by more flexible process.
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Inventors:
ZHANG CHAO (CN)
LUO ZHONGHAN (CN)
FANG ZEMIN (CN)
MAO JIONGHUI (CN)
CHEN SHENGLIN (CN)
WANG RUOPING (CN)
WANG XIANGXIN (CN)
LUO ZHONGHAN (CN)
FANG ZEMIN (CN)
MAO JIONGHUI (CN)
CHEN SHENGLIN (CN)
WANG RUOPING (CN)
WANG XIANGXIN (CN)
Application Number:
PCT/CN2008/073418
Publication Date:
June 25, 2009
Filing Date:
December 10, 2008
Export Citation:
Assignee:
WUHAN IRON & STEEL GROUP CORP (CN)
ZHANG CHAO (CN)
LUO ZHONGHAN (CN)
FANG ZEMIN (CN)
MAO JIONGHUI (CN)
CHEN SHENGLIN (CN)
WANG RUOPING (CN)
WANG XIANGXIN (CN)
ZHANG CHAO (CN)
LUO ZHONGHAN (CN)
FANG ZEMIN (CN)
MAO JIONGHUI (CN)
CHEN SHENGLIN (CN)
WANG RUOPING (CN)
WANG XIANGXIN (CN)
International Classes:
B21B1/46; B21B37/74; C21D9/46; C21D11/00; B21B15/00; B21B45/08
Foreign References:
| CN101181718A | 2008-05-21 | |||
| CN201157843Y | 2008-12-03 | |||
| CN1618539A | 2005-05-25 | |||
| CN1538884A | 2004-10-20 | |||
| CN1748883A | 2006-03-22 | |||
| CN1680051A | 2005-10-12 | |||
| US6282767B1 | 2001-09-04 | |||
| EP0937512A1 | 1999-08-25 |
Attorney, Agent or Firm:
WUHAN KAIYUAN PATENT AGENCY LTD. (Jiefang Avenue Hankou,Wuhan, Hubei 6, CN)
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