发明名称 PROCESS FOR MANUFACTURING STAMPED PRODUCTS, AND STAMPED PRODUCTS PREPARED FROM THE SAME
摘要 The invention relates to a process for making a hot stamped coated steel sheet product, comprising the steps of pre-coating a steel strip or sheet with aluminum—or aluminum alloy, cutting said pre-coated steel strip or sheet to obtain a pre-coated steel blank, heating the blank in a furnace preheated to a temperature and during a time defined by diagram according to thickness, at a heating rate Vc between 20 and 700° C. comprised between 4 and 12° C./s and at a heating rate Vc′ between 500 and 700° C. comprised between 1.5 and 6° C./s, to obtain a heated blank; then transferring said heated blank to a die, hot stamping the heated blank in the die obtain a hot stamped steel sheet product, cooling at a mean rate Vr between the exit of the heated blank from the furnace, down to 400° C., of at least 30° C./s.
申请公布号 KR20130008657(A) 申请公布日期 2013.01.22
申请号 KR20137000047 申请日期 2009.01.12
申请人 ARCELORMITTAL FRANCE 发明人 DRILLET PASCAL;SPEHNER DOMINIQUE;KEFFERSTEIN RONALD
分类号 C21D8/02;C22C38/32;C22C38/38;C23C2/12 主分类号 C21D8/02
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