| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a high-strength component superior in freezability by press forming at a high temperature. SOLUTION: The method for manufacturing the high-strength component superior in shape freezability comprises finish hot rolling steel comprising 0.05-0.4 mass% C, 1-12 mass% at least one elements selected from among Mo, Mn, Cr, Cu, Ni, Nb, Ti, V, Si, and Al, B as needed, and the balance being iron and unavoidable impurities preferably at a temperature of an Ar3 point or lower but 650°C or higher, cold rolling the resultant hot rolled steel sheet, and press forming the cold rolled steel sheet as it is at 700-1,050°C. COPYRIGHT: (C)2004,JPO&NCIPI
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