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:
Mar. 24, 2020
Filed:
Nov. 13, 2014
Applicant:
Jfe Steel Corporation, Tokyo, JP;
Inventors:
Yusuke Fushiwaki, Fukuyama, JP;
Yoshiyasu Kawasaki, Chiba, JP;
Assignee:
JFE STEEL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D 1/74 (2006.01); C21D 9/56 (2006.01); C25F 1/06 (2006.01); C22C 38/06 (2006.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01); C22C 38/60 (2006.01); C21D 8/04 (2006.01); C21D 1/76 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/08 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01); C22C 38/16 (2006.01); C22C 38/18 (2006.01);
U.S. Cl.
CPC ...
C21D 1/74 (2013.01); C21D 1/76 (2013.01); C21D 8/0447 (2013.01); C21D 9/46 (2013.01); C21D 9/56 (2013.01); C22C 38/00 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/08 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (2013.01); C22C 38/16 (2013.01); C22C 38/18 (2013.01); C22C 38/60 (2013.01); C25F 1/06 (2013.01); C21D 2211/008 (2013.01);
Abstract
A high-strength steel sheet and a method for manufacturing a high-strength steel sheet having excellent phosphatability and excellent corrosion resistance after electrodeposition coating has been performed, even in the case where the contents of Si and Mn are high. The method may comprise annealing a steal sheet by using a continuous annealing method, performing a heating process, controlling the maximum end-point temperature of a steel sheet in the annealing furnace, controlling the traveling time of the steel sheet, and controlling the dew point of the atmosphere.