| 摘要 |
PROBLEM TO BE SOLVED: To provide a hot-pressing method of a steel sheet which has high strength after forming at high temperature. SOLUTION: When forming a steel sheet containing, by mass,≥0.2% C at a high temperature with a press after heating it to≥850°C, formed goods are taken out of a press die within 5 s after the press die reaches the bottom dead center and cooled at a cooling rate of≥30°C/s. COPYRIGHT: (C)2006,JPO&NCIPI
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