GALVANIZED STEEL SHEET FOR HOT PRESSING AND METHOD FOR PRODUCING HOT PRESSED MOLDED ARTICLE

WIPO Patent Application WO/2017/057570

A1

Provided are a galvanized steel sheet by which, in a hot pressing process, heating for suppressing generation of LME cracks can be effected in a short time; and a galvanized steel sheet for hot pressing, which is obtained by subjecting the galvanized steel sheet to hot pressing. This galvanized steel sheet for hot pressing is a galvanized steel sheet that is used in hot pressing, and is characterized in that internal oxides are present on the base steel sheet side of an interface between a galvanizing layer and the base steel sheet and in that the base steel sheet contains stipulated quantities of C, Si, Mn and Cr, with the remainder comprising iron and unavoidable impurities, and satisfies formula (1). Formula (1): (2×[Si]/28.1+[Mn]/54.9+1.5×[Cr]/52.0) ≥ 0.05 In formula (1), [Si] denotes the content in terms of mass% of Si in the base steel sheet, [Mn] denotes the content in terms of mass% of Mn in the base steel sheet, and [Cr] denotes the content in terms of mass% of Cr in the base steel sheet.

JP5392116	Alloyed hot-dip galvanized steel sheet and its manufacturing method
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OTOMO RYOSUKE
TAKEDA MIKAKO

PCT/JP2016/078814

April 06, 2017

September 29, 2016

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KOBE STEEL LTD (JP)

C22C38/00; B21D22/20; C21D1/18; C21D9/00; C22C38/38; C22C38/58; C23C2/02; C23C2/06; C21D9/46

WO2014199923A1	2014-12-18
WO2013047820A1	2013-04-04
WO2015033177A1	2015-03-12
WO2015007723A1	2015-01-22

JP2014159624A	2014-09-04
JP2014224311A	2014-12-04

See also references of EP 3358032A4

SAMEJIMA, Mutsumi et al. (JP)

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