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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 10253386 B1

PDFFull Text
Date of Patent:
Apr. 09, 2019

Filed:

Mar. 04, 2013

Steel sheet for hot press-forming, method for manufacturing the same, and method for producing hot press-formed parts using the same

Applicant:

Jfe Steel Corporation, Chiyoda-ku, Tokyo, JP;

Inventors:

Tatsuya Miyoshi, Fukuyama, JP;

Seiji Nakajima, Chiba, JP;

Satoru Ando, Chiba, JP;

Assignee:

JFE Steel Corporation, Tokyo, JP;

Attorney:

RatnerPrestia

Primary Examiner:

Seth Dumbris

Int. Cl.
CPC ...
B32B 15/00 (2006.01); C21D 8/02 (2006.01); C23C 2/02 (2006.01); C23C 2/06 (2006.01); C23C 2/28 (2006.01); C23C 2/40 (2006.01); C21D 9/46 (2006.01); C22C 18/00 (2006.01); C22C 21/10 (2006.01); C22C 38/00 (2006.01); C22C 38/60 (2006.01); C21D 1/673 (2006.01); B32B 15/01 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/18 (2006.01); C22C 38/28 (2006.01); C22C 38/32 (2006.01); B21D 22/02 (2006.01); C21D 7/13 (2006.01);
U.S. Cl.
CPC ...
C21D 8/0278 (2013.01); B21D 22/022 (2013.01); B32B 15/013 (2013.01); C21D 1/673 (2013.01); C21D 8/0226 (2013.01); C21D 8/0247 (2013.01); C21D 9/46 (2013.01); C22C 18/00 (2013.01); C22C 21/10 (2013.01); C22C 38/00 (2013.01); C22C 38/001 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/18 (2013.01); C22C 38/28 (2013.01); C22C 38/32 (2013.01); C22C 38/60 (2013.01); C23C 2/02 (2013.01); C23C 2/06 (2013.01); C23C 2/28 (2013.01); C23C 2/40 (2013.01); C21D 7/13 (2013.01); C21D 2211/005 (2013.01); Y10T 428/12799 (2015.01);
Abstract

The invention provides a steel sheet for hot press-forming that can reliably give hot press-formed parts having excellent paint adhesiveness, perforation corrosion resistance and joint corrosion resistance, and also provides a method for manufacturing the steel sheet for hot press-forming, and a method for producing hot press-formed parts using the steel sheet for hot press-forming. The steel sheet for hot press-forming includes a base steel sheet and a Zn-based coating layer with a mass of coating of 10 to 90 g/mon the base steel sheet, wherein the average ferrite grain diameter in the surface microstructure of the base steel sheet is not more than 20 μm.

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