logo

For the Inventor, By the Inventor

The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9523142 B1

PDFFull Text
Date of Patent:
Dec. 20, 2016

Filed:

Mar. 25, 2014

Hot-dip zinc alloy coated steel sheet excellent in coating adhesion, and method for producing the same

Applicant:

Nisshin Steel Co., Ltd., Tokyo, JP;

Inventors:

Masaaki Uranaka, Osaka, JP;

Takeshi Shimizu, Tokyo, JP;

Kentaro Hirata, Hiroshima, JP;

Assignee:

NISSHIN STEEL CO., LTD., Tokyo, JP;

Attorney:

Clark & Brody

Primary Examiner:

Jie Yang

Int. Cl.
CPC ...
C23C 2/02 (2006.01); C23C 2/06 (2006.01); C21D 9/46 (2006.01); C22C 18/04 (2006.01); C22C 38/00 (2006.01); C22C 38/38 (2006.01); C21D 8/02 (2006.01); C21D 8/04 (2006.01); B32B 15/01 (2006.01); C21D 6/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01); C22C 38/26 (2006.01); C22C 38/28 (2006.01); C22C 38/32 (2006.01); C23C 2/40 (2006.01);
U.S. Cl.
CPC ...
C23C 2/02 (2013.01); B32B 15/013 (2013.01); C21D 6/002 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 8/0226 (2013.01); C21D 8/0263 (2013.01); C21D 8/0426 (2013.01); C21D 8/0473 (2013.01); C21D 8/0478 (2013.01); C21D 9/46 (2013.01); C22C 18/04 (2013.01); C22C 38/00 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (2013.01); C22C 38/26 (2013.01); C22C 38/28 (2013.01); C22C 38/32 (2013.01); C22C 38/38 (2013.01); C23C 2/06 (2013.01); C23C 2/40 (2013.01); C21D 2211/004 (2013.01);
Abstract

A method for producing a hot-dip zinc alloy coated steel sheet excellent in coating adhesion, comprising: hot-rolling a steel sheet, subjecting the base sheet for coating to a reduction heat treatment, and subjecting the base sheet for coating to hot-dip zinc alloy coating. The hot-dip alloy coated steel sheet is excellent in coating adhesion, by using, as a base sheet for coating, a steel sheet that is imparted with resistance to liquid metal embrittlement cracking by adding B. The hot-dip zinc alloy coated steel sheet excellent in coating adhesion contains at least one of a Si simple oxide, a Mn simple oxide, a Cr simple oxide, a Si—Mn composite oxide, a Si—Cr composite oxide, a Mn—Cr composite oxide, and a Si—Mn—Cr composite oxide in a portion within 10 μm from an interface between a steel sheet as a base sheet and a hot-dip galvanized layer formed on a surface thereof.

Find Patent Forward Citations

Loading…