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WORKING METHOD OF MEMBER EXCELLENT IN CHEMICAL CONVERSION PROPERTY
WORKING METHOD OF MEMBER EXCELLENT IN CHEMICAL CONVERSION PROPERTY
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机译：化学转化性能优秀成员的工作方法
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摘要
PROBLEM TO BE SOLVED: To provide a working method of a high-strength member having a higher Si-content than 0.7 mass%.;SOLUTION: Working process is applied to a high-strength steel material containing ≥0.05 mass% C, 0.7 mass% Si and ≥0.8 mass% Mn, to form a member with a predetermined shape, wherein working amount is adjusted such that sum of absolute values of surface strains in a predetermined direction respectively imparted in each process of working is 5% or more in a nominal strain. Even when Si is contained in an amount of 0.7 mass%, the member is made to have a remarkably improved chemical conversion property without specifically carrying out mechanical grinding, chemical pickling processing or the like.;COPYRIGHT: (C)2010,JPO&INPIT
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