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.:
Date of Patent:
Apr. 13, 2010
Filed:
Mar. 30, 2004
Koki Tanaka, Futtsu, JP;
Yoichi Ikematsu, Futtsu, JP;
Shunichi Hayashi, Futtsu, JP;
Hideaki Sawada, Futtsu, JP;
Akira Takahashi, Kimitsu, JP;
Kazuhiko Honda, Kimitsu, JP;
Masayoshi Suehiro, Futtsu, JP;
Yoshihisa Takada, Kitakyushu, JP;
Koki Tanaka, Futtsu, JP;
Yoichi Ikematsu, Futtsu, JP;
Shunichi Hayashi, Futtsu, JP;
Hideaki Sawada, Futtsu, JP;
Akira Takahashi, Kimitsu, JP;
Kazuhiko Honda, Kimitsu, JP;
Masayoshi Suehiro, Futtsu, JP;
Yoshihisa Takada, Kitakyushu, JP;
Nippon Steel Corporation, Tokyo, JP;
USINOR, Puteaux, FR;
Abstract
The present invention provides an alloyed molten zinc plated steel sheet having an area of the Fe and Zn alloy phase in the unformed parts in the plating layer of less than 10% of the area of the steel sheet as a whole and superior in strength and shapeability and a method of producing this alloyed molten zinc plating steel sheet by a continuous zinc plating production system which enables production at a low cost without modification of the system or addition of steps, said alloyed molten zinc plated steel sheet characterized by comprising a steel sheet including C: 0.05 to 0.40%, Si: 0.2 to 3.0%, and Mn: 0.1 to 2.5%, the balance comprised of Fe and unavoidable impurities, having on its surface a Zn alloy plating layer comprised of Fe in a concentration of 7 to 15 wt %, Al in a concentration of 0.01 to 1 wt %, and the balance of Zn and unavoidable impurities, said plating layer containing oxide particles of at least one type of oxide selected from an Al oxide, Si oxide, Mn oxide, and complex oxides of the same alone or in combination.