Title:
PRESS-FORMED ARTICLE, AND MANUFACTURING METHOD FOR SAME
Document Type and Number:
WIPO Patent Application WO/2013/118862
Kind Code:
A1
Abstract:
When manufacturing a molded article by using a metal mold having a punch and a die to press mold a steel sheet, after heating the steel sheet to a temperature which is at least equal to an Ac1 transformation point, by initiating molding after the sheet has cooled to 650°C or less and keeping the friction coefficient between the metal mold and the steel sheet during molding at 0.3 or less, this method can be used to manufacture a press-formed article having such excellent moldability that deep-drawing processing is possible.
Inventors:
OKITA KEISUKE
IKEDA SHUSHI
NAITOU JUNYA
IKEDA SHUSHI
NAITOU JUNYA
Application Number:
PCT/JP2013/053039
Publication Date:
August 15, 2013
Filing Date:
February 08, 2013
Export Citation:
Assignee:
KOBE STEEL LTD (JP)
International Classes:
B21D22/20; B21D22/28; B21D37/18; B21D37/20
Foreign References:
| JP2005329449A | 2005-12-02 | |||
| JP2011183451A | 2011-09-22 | |||
| JP2005060619A | 2005-03-10 | |||
| JP2001353548A | 2001-12-25 | |||
| JP2010099735A | 2010-05-06 |
Attorney, Agent or Firm:
UEKI, Kyuichi et al. (JP)
Hisakazu Ueki (JP)
Hisakazu Ueki (JP)
Download PDF:
Claims: