Title:
HOT-PRESS-MOLDED ARTICLE AND PRODUCTION METHOD FOR SAME, AND PLATED STEEL SHEET FOR USE IN HOT-PRESS MOLDING
Document Type and Number:
WIPO Patent Application WO/2016/006232
Kind Code:
A1
Abstract:
Provided are a hot-press-molded article that has excellent resistance spot weldability, and that does not require a process such as shotblasting to remove oxides; a production method for the same; and a plated steel sheet for use in hot-press molding. The plated hot-press-molded article is obtained by heating a plated steel sheet to a temperature at or above the Ac3 transformation point of the plated steel sheet, and then simultaneously cooling while molding the sheet with a mold. An oxide layer having a network of asperities, having average roughness Ra of at least 2 μm and average thickness of no more than 3 μm, is present on the plated surface, and below the oxide layer is a plated layer having a melting point that is no higher than the aforementioned heating temperature.
Inventors:
OKITA YASUAKI (JP)
IKEDA RINSEI (JP)
TANIGUCHI KOICHI (JP)
IKEDA RINSEI (JP)
TANIGUCHI KOICHI (JP)
Application Number:
PCT/JP2015/003426
Publication Date:
January 14, 2016
Filing Date:
July 07, 2015
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
B21D22/20; C21D1/18; C21D9/00; C25D5/26; C22C18/00; C22C18/04; C22C19/03; C22C38/00; C22C38/60
Foreign References:
| JP2012233247A | 2012-11-29 | |||
| JP2012197505A | 2012-10-18 | |||
| JP2014014834A | 2014-01-30 | |||
| JP2011246801A | 2011-12-08 | |||
| US20130125607A1 | 2013-05-23 |
Attorney, Agent or Firm:
KUMASAKA, Akira et al. (JP)
Akira Kumasaka (JP)
Akira Kumasaka (JP)
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