发明名称 |
HIGH-STRENGTH, COLD-ROLLED STEEL SHEET EXCELLENT IN FORMABILITY, HOT-DIP ZINC COATED HIGH-STRENGTH COLD ROLLED STEEL SHEET, AND METHOD OF MANUFACTURING SAID SHEETS |
摘要 |
<p>A method of manufacturing high-strength, cold-rolled steel sheet excellent in formability. When increasing the strength of extra low-carbon steel as a base material including Nb or a combination of Ti and Nb by adding solid-solution strengthening element thereto, quantities of P and Si to be added which have been used in quantities are decreased whereas Mn and Cr are liberally added. Thus, the yield strength is prevented from increasing and the strength can be increased, whereby a high strength cold rolled steel sheet excellent in surface formability and in resistance to denting can be manufactured. <MATH></p> |
申请公布号 |
EP0691415(A1) |
申请公布日期 |
1996.01.10 |
申请号 |
EP19920906721 |
申请日期 |
1992.03.13 |
申请人 |
NIPPON STEEL CORPORATION |
发明人 |
USHIODA, KOHSAKU, CHUO KENKYU HONBU OF;YOSHINAGA, NAOKI, CHUO KENKYU HONBU OF;AKISUE, OSAMU, CHUO KENKYU HONBU OF |
分类号 |
C22C38/04;C22C38/12;(IPC1-7):C22C38/12;C21D9/48;C21D8/04;C23C2/06;C22C38/38 |
主分类号 |
C22C38/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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