发明名称 |
METHOD FOR THE PRODUCTION OF PRESS-HARDENED, COATED STEEL PARTS AND PRE-COATED STEEL SHEETS THAT CAN BE USED FOR THE PRODUCTION OF SAID PARTS |
摘要 |
The invention relates to a cold-rolled, annealed and pre-coated steel sheet for the production of press-hardened parts, formed by a steel substrate for thermal treatment, having a carbon content C0 of between 0.07% and 0.5%, said content being expressed by weight, and a metal pre-coating on at least the two main faces of the steel substrate, characterised in that the substrate comprises a decarburised zone on the surface of each of the two main faces, the depth p50% of the decarburised zone being between 6 and 30 micrometres, p50% being the depth at which the carbon content is equal to 50% of the above-mentioned C0 content, as well as being characterised in that the steel sheet does not contain an iron oxide layer between the substrate and the metal pre-coating. |
申请公布号 |
WO2015033177(A1) |
申请公布日期 |
2015.03.12 |
申请号 |
WO2013IB01914 |
申请日期 |
2013.09.06 |
申请人 |
ARCELORMITTAL INVESTIGACIÓN Y DESARROLLO SL |
发明人 |
PUERTA VELASQUEZ, JUAN, DAVID;STAUDTE, JONAS;DRILLET, PASCAL |
分类号 |
C21D1/74;B62D29/00;C21D1/34;C21D1/52;C21D1/673;C21D1/76;C21D3/04;C21D8/02;C21D8/04;C23C2/02;C23C2/06;C23C2/12 |
主分类号 |
C21D1/74 |
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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