发明名称 |
HOT-DIP GALVANIZED STEEL SHEET FOR PRESS FORMING WITH EXCELLENT COLD WORKABILITY, IN-MOLD HARDENABILITY, AND SURFACE PROPERTY, AND PROCESS FOR PRODUCING SAME |
摘要 |
Disclosed is a hot-dip galvanized steel sheet for stamping, which has excellent cold workability, has such satisfactory surface quality as to be free from unplating and other defects even in the absence of dedicated facilities, and ensures a strength of 1370 MPa or more after quenching even when cooled at a low rate. Also disclosed is a method effective for the produce of the hot-dip galvanized steel sheet for stamping. The hot-dip galvanized steel sheet for stamping comprises a base steel sheet and a hot-dip galvanized layer on a surface of the base steel sheet, in which the base steel sheet has a predetermined chemical composition and has a microstructure comprising equiaxed ferrite having an average aspect ratio of 4.0 or less and cementite and/or pearlite having an average major axis of grains of 20 µm or less. |
申请公布号 |
EP2832884(A4) |
申请公布日期 |
2016.02.17 |
申请号 |
EP20130769295 |
申请日期 |
2013.03.28 |
申请人 |
VOESTALPINE STAHL GMBH |
发明人 |
NAKAYA, MICHIHARU;ASAI, TATSUYA;PICHLER, ANDREAS;KURZ, THOMAS |
分类号 |
C22C38/00;C21D8/02;C21D8/04;C21D9/46;C21D9/48;C22C38/02;C22C38/04;C22C38/06;C22C38/28;C22C38/32;C22C38/38;C23C2/02;C23C2/06 |
主分类号 |
C22C38/00 |
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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