摘要 |
PROBLEM TO BE SOLVED: To provide a hot press-forming method and a hot press-forming die by which drawing forming is possible without causing forming cracks. SOLUTION: In a hot press-forming method by which quenched formed products are obtained by performing the press-forming and the cooling of a heated steel sheet W simultaneously with a forming die 1, the peripheral part of the charged heated steel sheet W is held with a blank holder 4 and the holder face 10 of a die 2 facing the blank holder 4 which are heated to a temperature where rapid cooling is not caused on the heated steel sheet W, respectively, the peripheral part of the heated steel sheet W is pressed with the blank holder 4 and the holder face 10 of the die 2 in accordance with the forming starting motion of the forming die 1 and the steel sheet W is drawn by forming motion after that. COPYRIGHT: (C)2005,JPO&NCIPI
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