发明授权
- 专利标题: Dual phase steel sheet and method of manufacturing the same
- 专利标题(中): 双相钢板及其制造方法
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申请号: US13530247申请日: 2012-06-22
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公开(公告)号: US08449698B2公开(公告)日: 2013-05-28
- 发明人: Dong-Eun Kim , Jin-Sung Park , Hee-Joong Im , Man-Been Moon , Hyun-Woon Oh
- 申请人: Dong-Eun Kim , Jin-Sung Park , Hee-Joong Im , Man-Been Moon , Hyun-Woon Oh
- 申请人地址: KR Ulsan
- 专利权人: Hyundai Hysco
- 当前专利权人: Hyundai Hysco
- 当前专利权人地址: KR Ulsan
- 代理机构: Lowe Hauptman Ham & Berner, LLP
- 优先权: KR10-2009-0081659 20090831
- 主分类号: C21D8/02
- IPC分类号: C21D8/02 ; C22C38/38 ; C22C38/32 ; C22C38/02 ; C22C38/22
摘要:
The present disclosure relates to a dual phase steel sheet and a method of manufacturing the same. The steel sheet comprises C: 0.05˜0.10% wt %, Si: 0.03˜0.50 wt %, Mn: 1.50˜2.00 wt %, P: greater than 0 wt %˜0.03 wt %, S: greater than 0 wt %˜0.003 wt %, Al: 0.03˜0.50 wt %, Cr: 0.1˜0.2 wt %, Mo: 0.1˜0.20 wt %, Nb: 0.02˜0.04 wt %, B: greater than 0 wt %˜0.005 wt %, N: greater than 0 wt %˜0.01 wt %, and the balance of Fe and other unavoidable impurities. To impart excellent formability, bake hardenability, dent resistance, high Ri value and plating characteristics to the steel sheet for exterior and interior panels of automobiles, the steel sheet is processed to have a dual phase structure through cold rolling, annealing, and hot-dip galvanizing.
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