| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a press-formed article which is excellent in formability to such a degree that the press-formed article can be deep-drawn without complicating die configuration and without bringing about troubles caused by the formation of scale, as necessary, on the surface of a steel sheet. <P>SOLUTION: In the method of manufacturing a press-formed article, when manufacturing a formed article by press-forming a thin steel sheet 4 by using a punch 1 and a die 2, the press forming is started after the thin steel sheet 4 is heated to a temperature equal to or higher than the Ac<SB POS="POST">3</SB>transformation point, and the thin steel sheet is formed in such a manner that temperature difference in the steel sheet is within 200°C when the thin steel sheet 4 has reached 1/3 of forming height. <P>COPYRIGHT: (C)2012,JPO&INPIT |
