Title:
PRODUCTION METHOD FOR HOT PRESS MOLDED ARTICLES, PRESS MOLDED ARTICLE, DIE MOLD, AND MOLD SET
Document Type and Number:
WIPO Patent Application WO/2019/198728
Kind Code:
A1
Abstract:
A production method for hot press molded articles, whereby a die mold 11 is used to perform hot press molding on an Al-plated steel plate 10 having a zinc compound layer or a metal zinc layer as the outermost layer upon an Al plating layer. The die mold 11 has a hard layer 11C having a skewness (Rsk) of no more than 1.3 and a hardness Hv_Die of at least 2000 HV, as measured in a direction from the outside of a die hole 11D towards the inside, said hard layer 11C being the entire area adjacent to a die shoulder 11B out of a metal plate contact surface 11A that is a surface on the outside of the die hole 11D and in contact with the Al-plated steel plate 10 prior to hot press molding.
Inventors:
KUBO MASAHIRO (JP)
FUJITA SOSHI (JP)
NAKAZAWA YOSHIAKI (JP)
IRIKAWA HIDEAKI (JP)
FUDA MASAHIRO (JP)
FUJITA SOSHI (JP)
NAKAZAWA YOSHIAKI (JP)
IRIKAWA HIDEAKI (JP)
FUDA MASAHIRO (JP)
Application Number:
PCT/JP2019/015517
Publication Date:
October 17, 2019
Filing Date:
April 09, 2019
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
B21D37/01; B21D22/20; B21D24/00; C21D1/18; C21D9/00; C23C28/00; C22C38/00; C22C38/14
Domestic Patent References:
| WO2017029773A1 | 2017-02-23 | |||
| WO2014171417A1 | 2014-10-23 | |||
| WO2009131233A1 | 2009-10-29 | |||
| WO2016171273A1 | 2016-10-27 | |||
| WO2009131233A1 | 2009-10-29 |
Foreign References:
| JP2014139350A | 2014-07-31 | |||
| JP2005305510A | 2005-11-04 | |||
| JP2014139350A | 2014-07-31 | |||
| JP4771223B2 | 2011-09-14 | |||
| JP2018077794A | 2018-05-17 |
Other References:
See also references of EP 3778060A4
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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