AL-PLATED STEEL SHEET FOR HOT PRESSING AND PROCESS FOR MANUFACTURING AL-PLATED STEEL SHEET FOR HOT PRESSING

Title:

AL-PLATED STEEL SHEET FOR HOT PRESSING AND PROCESS FOR MANUFACTURING AL-PLATED STEEL SHEET FOR HOT PRESSING

Document Type and Number:

WIPO Patent Application WO/2015/087921

Kind Code:

A1

Abstract:

[Problem] To provide an Al-plated steel sheet which is to be subjected to hot pressing and which exhibits excellent hot lubricity, excellent corrosion resistance after coating and excellent spot weldability. [Solution] This Al-plated steel sheet for hot pressing comprises a steel sheet, an Al deposit layer formed on one or both surfaces of the steel sheet, and a surface film layer formed on the Al deposit layer, wherein: the surface film layer contains a zinc compound; the zinc compound adheres to the Al-plated steel sheet in an amount of 0.3 to 1.5g/m2 per surface in terms of metallic zinc; and the amount of zinc adhering to an arbitrary continuous area of one square millimeter is 1.5g/m2 or less.

Inventors:

FUJITA SOSHI (JP)
YAMANAKA SHINTARO (JP)
MAKI JUN (JP)
FUJIMOTO HIROKI (JP)
OIKAWA HATSUHIKO (JP)
IRIKAWA HIDEAKI (JP)

Application Number:

PCT/JP2014/082708

Publication Date:

June 18, 2015

Filing Date:

December 10, 2014

Export Citation:

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Assignee:

NIPPON STEEL & SUMITOMO METAL CORP (JP)

International Classes:

C23C2/12; B21D22/20; C23C2/28; C23C2/40; C22C21/02; C22C38/00; C22C38/38

Domestic Patent References:

WO2013122004A1	2013-08-22
WO2009131233A1	2009-10-29

Foreign References:

JP2013221202A	2013-10-28
JP2013151734A	2013-08-08
JPH0655129A	1994-03-01
JP2010188317A	2010-09-02
JP2000038640A	2000-02-08
JP2004211151A	2004-07-29

Other References: