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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 9598759 B1

PDFFull Text
Date of Patent:
Mar. 21, 2017

Filed:

Apr. 23, 2013

Method for producing black-plated steel sheet, and method for producing molded article of black-plated steel sheet

Applicant:

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

Inventors:

Tadashi Nakano, Tokyo, JP;

Masaya Yamamoto, Tokyo, JP;

Hirofumi Taketsu, Tokyo, JP;

Assignee:

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

Attorney:

Brundidge & Stanger, P.C.

Primary Examiner:

Lois Zheng

Int. Cl.
CPC ...
C23C 8/10 (2006.01); C23C 22/53 (2006.01); C23C 8/02 (2006.01); C23C 8/16 (2006.01); C23C 2/06 (2006.01); C22C 18/00 (2006.01); C22C 18/04 (2006.01); C23C 28/00 (2006.01); C23C 2/26 (2006.01); C23C 8/18 (2006.01); B32B 15/01 (2006.01); C22C 38/00 (2006.01); C22C 1/02 (2006.01); C23C 2/12 (2006.01); C23C 8/80 (2006.01); C23C 28/02 (2006.01);
U.S. Cl.
CPC ...
C23C 8/16 (2013.01); B32B 15/013 (2013.01); C22C 1/02 (2013.01); C22C 18/00 (2013.01); C22C 18/04 (2013.01); C22C 38/00 (2013.01); C23C 2/06 (2013.01); C23C 2/12 (2013.01); C23C 2/26 (2013.01); C23C 8/02 (2013.01); C23C 8/18 (2013.01); C23C 8/80 (2013.01); C23C 28/00 (2013.01); C23C 28/02 (2013.01); C23C 28/321 (2013.01); C23C 28/3225 (2013.01); C23C 28/34 (2013.01); C23C 28/345 (2013.01);
Abstract

The present invention pertains to a method for producing a black-plated steel sheet capable of being blackened in a short amount of time, and exhibiting an excellent ability to maintain a black appearance after processing. As an original sheet, the sheet used is a Zn-plating steel sheet which contains molten Al and Mg and has a Zn-plating layer containing molten Al and Mg, containing Al in the amount of 0.1-22.0 mass %, inclusive, and containing Mg in the amount of 0.1-1.5 mass %, inclusive. The plating layer is blackened by causing the molten-plating steel sheet to contact water vapor inside a tightly sealed container. When doing so, the concentration of oxygen inside the tightly sealed container is 13% or less.

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