Title:
【発明の名称】成形性の良好な高強度冷延鋼板と溶融亜鉛メッキ高強度冷延鋼板およびそれらの製造方法
Document Type and Number:
Japanese Patent JP3365632
Kind Code:
B2
Abstract:
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.
Inventors:
Kosaku Ushioda
Naoki Yoshinaga
Osamu Akisue
Naoki Yoshinaga
Osamu Akisue
Application Number:
JP50641692A
Publication Date:
January 14, 2003
Filing Date:
March 13, 1992
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
C22C38/04; C22C38/12; (IPC1-7): C22C38/12; C21D8/04; C21D9/48; C22C38/38; C23C2/06
Domestic Patent References:
| JP6475659A | ||||
| JP5825436A | ||||
| JP57181361A | ||||
| JP6256209B2 | ||||
| JP6240405B2 | ||||
| JP6049698B2 |
Attorney, Agent or Firm:
Akira Asamura (3 outside)