发明名称 |
Method of shaping and hardening a sheet steel blank |
摘要 |
A method of forming a product by shaping and hardening a sheet-steel blank formed from separate sheets welded together, heating the blank to the austenitising range, hot stamping the blank in a cooled tool pair, hardening the product while it remains in the tool pair, and cooling the weld between two adjacent sheets at a reduced cooling rate as compared to the cooling rate of areas on either side of the weld. |
申请公布号 |
US9127330(B2) |
申请公布日期 |
2015.09.08 |
申请号 |
US201013261035 |
申请日期 |
2010.06.09 |
申请人 |
Gestamp Hardtech AB |
发明人 |
Krispinsson Jan |
分类号 |
C21D8/02;C21D1/673;B21D22/02;B21D37/16;C21D9/50 |
主分类号 |
C21D8/02 |
代理机构 |
|
代理人 |
Stone Mark P. |
主权项 |
1. A method of forming a product by shaping and hardening a sheet-steel blank comprising separate sheets welded together, the steps of said method including: heating the blank to the austenitising range, hot-stamping the blank in a cooled tool pair, hardening the product while it remains in the tool pair, and
cooling the weld between two adjacent said sheets at a reduced cooling rate compared to the cooling rate of areas on either side of the weld such that said areas on either side of the weld are harder than the weld. |
地址 |
Lulea SE |