发明名称 |
METHOD FOR PRODUCING GALVANIZED STEEL SHEET FOR HOT STAMPING, ALLOYED HOT-DIPPED GALVANIZED STEEL SHEET FOR HOT STAMPING AND METHOD FOR PRODUCING SAME, AND HOT STAMPED COMPONENT |
摘要 |
Provided is a method for producing a plated steel sheet with high Si content for hot stamping, which is capable of suppressing the generation of unplated portions, while maintaining high bonding strength in a welded part in cases where a galvanized steel sheet containing a large amount of Si, namely, 0.7% or more of Si is used for hot stamping applications. In this production method, a hot-rolled pickled steel sheet or cold-rolled steel sheet containing 0.10-0.5% by mass of C, 0.7-2.5% by mass of Si, 1.0-3% by mass of Mn, and 0.01-0.5% by mass of Al is annealed in a reducing atmosphere and then plated, thereby producing a galvanized steel sheet for hot stamping. This method for producing a galvanized steel sheet for hot stamping is characterized in that the annealing is carried out within the range of 500 to 700°C for 30 to 270 seconds. |
申请公布号 |
EP2843077(A4) |
申请公布日期 |
2016.04.13 |
申请号 |
EP20130781200 |
申请日期 |
2013.04.23 |
申请人 |
KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.) |
发明人 |
KOJIMA, TAKESHI;IRIE, HIROSHI;MINOWA, TAKESHI |
分类号 |
C23C2/02;B21D22/20;C21D1/18;C21D1/76;C21D9/00;C21D9/46;C22C38/00;C22C38/06;C22C38/58;C23C2/06;C23C2/28 |
主分类号 |
C23C2/02 |
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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