METHOD OF MANUFACTURING HOT PRESS MEMBER

Title:

METHOD OF MANUFACTURING HOT PRESS MEMBER

Document Type and Number:

WIPO Patent Application WO/2015/001705

Kind Code:

A1

Abstract:

The basic purpose of the present invention, being a method of manufacturing a hot press member with excellent corrosion resistance, is to provide such a method of manufacturing a hot press member with excellent liquid metal brittleness resistance in which liquid metal brittleness cracking due to zinc in a plating layer entering the steel sheet does not occur. This method of manufacturing hot press member is characterized in that a plated steel sheet is provided with a substrate steel sheet and a plating layer, the latter of which is formed on said substrate steel sheet, contains 10-25 mass% of Ni, the remainder being of Zn and unavoidable impurities, and has an adhesion amount per side of 10-90g/m2, and in that said plated steel sheet is heated to 850-950°C, and hot press forming is initiated when the temperature of the plated steel sheet after heating is 650-800°C.

Inventors:

NAKAJIMA SEIJI (JP)
MORIMOTO MINAKO (JP)
ANDO SATORU (JP)

Application Number:

PCT/JP2014/002904

Publication Date:

January 08, 2015

Filing Date:

June 02, 2014

Export Citation:

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Assignee:

JFE STEEL CORP (JP)

International Classes:

B21D22/20; C21D1/18; C21D9/00; C22C18/00; C22C19/03; C25D5/26; C22C38/00; C22C38/60

Domestic Patent References:

WO2010005121A1

2010-01-14

Foreign References:

JP2012251232A	2012-12-20
JP2012251230A	2012-12-20
JP2010180428A	2010-08-19
JP2013185184A	2013-09-19
JP2012233248A	2012-11-29
JP2004211147A	2004-07-29
JP2006299377A	2006-11-02
GB1490535A	1977-11-02
JP3663145B2	2005-06-22
JP4329639B2	2009-09-09

Other References: