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Title:
ZINC-PLATED STEEL SHEET FOR HOT STAMPING AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/167573
Kind Code:
A1
Abstract:
The zinc-plated steel sheet for hot stamping according to an aspect of the present invention comprises a base steel sheet and a plating layer provided on a surface of the base steel sheet, wherein the base steel sheet contains, in mass%, 0.10-0.5% of C, 0.7-2.5% of Si, 1.0-3% of Mn, and 0.01-0.5% of Al, the remaining portion being iron and incidental impurities, and the base steel sheet has, in the inside thereof, an internal oxidized layer having a thickness of 1 μm or more and containing an oxide including Si and/or Mn, and a decarbonized layer having a thickness of 20 μm or less toward the inside of the base steel sheet from an interface between the base steel sheet and the plating layer.

Inventors:
YOSHIDA, Takatoshi
UKAWA, Yosuke
Application Number:
JP2019/004182
Publication Date:
September 06, 2019
Filing Date:
February 06, 2019
Export Citation:
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Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.) (2-4 Wakinohama-Kaigandori 2-chome, Chuo-ku Kobe-sh, Hyogo 85, 〒6518585, JP)
International Classes:
C22C38/00; C21D9/46; C22C38/06; C23C2/02; C23C2/06; C23C2/40; C21D1/18; C21D9/00
Domestic Patent References:
WO2015097882A12015-07-02
Foreign References:
JP2017002384A2017-01-05
JP2016089274A2016-05-23
JP2016532775A2016-10-20
JP2008284610A2008-11-27
Attorney, Agent or Firm:
KOTANI, Etsuji et al. (Osaka Nakanoshima Building 2nd Floor, 2-2 Nakanoshima 2-chome, Kita-ku, Osaka-sh, Osaka 05, 〒5300005, JP)
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