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:
May. 17, 2016
Filed:
Jun. 01, 2012
Mai Miyata, Tokyo, JP;
Yoshitsugu Suzuki, Tokyo, JP;
Yoshiyasu Kawasaki, Tokyo, JP;
Tatsuya Nakagaito, Tokyo, JP;
Shinjiro Kaneko, Tokyo, JP;
Yasunobu Nagataki, Tokyo, JP;
Mai Miyata, Tokyo, JP;
Yoshitsugu Suzuki, Tokyo, JP;
Yoshiyasu Kawasaki, Tokyo, JP;
Tatsuya Nakagaito, Tokyo, JP;
Shinjiro Kaneko, Tokyo, JP;
Yasunobu Nagataki, Tokyo, JP;
JFE Steel Corporation, , JP;
Abstract
A method of manufacturing a high strength galvanized steel sheet has a first heating step including heating to 400° C. to 750° C. in an atmosphere containing O: 0.1 to 20 percent and HO: 1 to 50 percent and heating to 600° C. to 850° C. in an atmosphere containing O: 0.01 to less than 0.1 percent and HO: 1 to 20 percent is applied to a steel sheet, a second heating step includes holding the steel sheet in an atmosphere containing H: 1 to 50 percent and having a dew point of 0° C. or lower at 750° C. to 900° C. for 15 to 600 s, cooling to a temperature of 450° C. to 550° C., and holding is performed at that temperature for 10 to 200 s, and a galvanization treatment is applied.