发明专利
CA2552963A1 HOT DIP GALVANIZED HIGH STRENGTH STEEL SHEET EXCELLENT IN PLATING ADHESION AND HOLE EXPANDABILITY AND METHOD OF PRODUCTION OF SAME
未知
基本信息:
- 专利标题： HOT DIP GALVANIZED HIGH STRENGTH STEEL SHEET EXCELLENT IN PLATING ADHESION AND HOLE EXPANDABILITY AND METHOD OF PRODUCTION OF SAME
- 申请号：CA2552963 申请日：2005-01-13
- 公开(公告)号：CA2552963A1 公开(公告)日：2005-07-28
- 发明人： TANIGUCHI HIROKAZU , KATO SATOSHI , HATTORI TOSHIKI , MATSUMURA KENICHIRO
- 申请人： NIPPON STEEL CORP
- 专利权人： NIPPON STEEL CORP
- 当前专利权人： NIPPON STEEL CORP
- 优先权： JP2004006999 2004-01-14; JP2004007096 2004-01-14
- 主分类号： C22C38/00
- IPC分类号： C22C38/00 ; C21D8/02 ; C21D9/46 ; C22C38/12 ; C22C38/58 ; C23C2/02 ; C23C2/06 ; C23C2/26
摘要：
A hot dip zinc plated high strength steel sheet being excellent in the adhesiveness of the plating and in hole expanding characteristics, which has a chemical composition, in mass %, that C: 0.08 to 0.35 %, Si: 1.0 % or less, Mn: 0.8 to 3.5 %, P: 0.03 or less, S: 0.03 or less, Al: 0.25 to 1.8 %, Mo: 0.05 to 0.35 %, N: 0.010 % or less and the balance: Fe and inevitable impurities, and has a metal structure containing ferrite and bainite, and 0. 5 to 10 area % of tempered martensite and 5 or more vol % of retained austenit e; and a method for producing the above hot dip zinc plated high strength steel sheet, wherein a hot-rolled steel sheet is annealed in a continuous annealin g process at a temperature of 680 to 930~C, the resultant sheet is cooled to a martensite transformation temperature or lower, and then the sheet is subjected to a hot dip zinc plating, which comprises subjecting it to the ho t dip zinc plating after heating it to 250 to 600~C.
公开/授权文献:
信息查询:
EspacenetIPC结构图谱:
| C | 化学；冶金 |
| --C22 | 冶金（铁的冶金入C21）；黑色或有色金属合金；合金或有色金属的处理 |
| ----C22C | 合金 |
| ------C22C38/00 | 铁基合金，例如合金钢 |