| 发明名称 |
HOT FORMING METHOD, AND HOT-FORMED MEMBER |
| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a hot pressing method for producing a hot-pressed member combining stable strength and toughness from a high strength steel sheet. <P>SOLUTION: In a cooling process on hot pressing, cooling is performed at a critical cooling rate or higher till an Ms point, and the cooling rate in the temperature range from the Ms point to 200°C is controlled to 25 to 150°C/s. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
| 申请公布号 |
JP2004353026(A) |
申请公布日期 |
2004.12.16 |
| 申请号 |
JP20030151106 |
申请日期 |
2003.05.28 |
| 申请人 |
SUMITOMO METAL IND LTD;TOYOTA MOTOR CORP;TOYODA IRON WORKS CO LTD |
发明人 |
NISHIHATA TOSHINOBU;NAKADA MASAHIRO;SUDO SHUNTARO;OBAYASHI AKIRA;ICHIKAWA MASANOBU |
| 分类号 |
B21J5/00;B21J5/06;C21D1/02;C21D1/19;C21D7/13;C22C38/00;C22C38/58;(IPC1-7):C22C38/00 |
主分类号 |
B21J5/00 |
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