Title:
METHODS FOR EVALUATING AND MANUFACTURING HOT-PRESS FORMED ARTICLE
Document Type and Number:
WIPO Patent Application WO/2016/088296
Kind Code:
A1
Abstract:
Provided is a method for evaluating a hot-press formed article in order to evaluate a hot-press formed article manufactured by performing hot-press forming on a surface-treated steel sheet in which a Zn-Ni plated layer is formed on the surface of a base steel sheet. The method for evaluating a hot-press formed article comprises an analysis model setting step, a forming condition setting step, a forming analysis step, and an evaluation step, which are performed by using a computer. In the evaluation step, the maximum depth of microcracks generated in a hot-press formed article which is manufactured under forming conditions set in the forming condition setting step is evaluated by using previously obtained correlation between an equivalent plastic strain in a surface portion of the hot-press formed article and the maximum depth of microcracks generated in the hot-press formed article.
Inventors:
MINOTE TORU (JP)
NAKAGAITO TATSUYA (JP)
TOKITA YUICHI (JP)
TAMAI YOSHIKIYO (JP)
NAKAGAITO TATSUYA (JP)
TOKITA YUICHI (JP)
TAMAI YOSHIKIYO (JP)
Application Number:
PCT/JP2015/005526
Publication Date:
June 09, 2016
Filing Date:
November 04, 2015
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
B21D22/00; B21D22/20; C21D1/18; C21D9/00
Foreign References:
| JP2012197505A | 2012-10-18 | |||
| JP2014201799A | 2014-10-27 | |||
| JP2008246542A | 2008-10-16 | |||
| JP2015213958A | 2015-12-03 | |||
| JP5825447B2 | 2015-12-02 | |||
| JP2015116575A | 2015-06-25 |
Other References:
See also references of EP 3228399A4
Attorney, Agent or Firm:
SUGIMURA, KENJI (JP)
Kenji Sugimura (JP)
Kenji Sugimura (JP)
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