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. 08, 2025
Filed:
Aug. 30, 2019
Applicant:
Arcelormittal, Luxembourg, LU;
Inventor:
Sadok Gaied, Saint-Maximin, FR;
Assignee:
ArcelorMittal, Luxembourg, LU;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D 1/09 (2006.01); C23C 2/06 (2006.01); C25D 3/66 (2006.01);
U.S. Cl.
CPC ...
C21D 1/09 (2013.01); C23C 2/06 (2013.01); C25D 3/66 (2013.01); C21D 2211/001 (2013.01); C21D 2211/002 (2013.01); C21D 2211/005 (2013.01); C21D 2211/008 (2013.01);
Abstract
A method to improve the formability of steel blanks, for steels containing at least 5% martensite, and possibly some ferrite, bainite and residual austenite and having an ultimate tensile strength of at least 500 MPa and possibly having a metallic coating layer on at least one side, wherein the steel blank is heat-treated on at least part of its peripheral thickness using at least one heat source, which heats the steel in a heat-treated zone to a temperature between 400° C. and 1500° C. without melting the steel in any points of the heat-treated zone.