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:
Dec. 08, 2020
Filed:
Jul. 16, 2015
Applicant:
H.e.f., Andrezieux Boutheon, FR;
Inventors:
Stéphan Grandjean, Saint Andre d'Apchon, FR;
Fabrice Prost, Saint Etienne, FR;
Assignee:
H.E.F., Andrezieux Boutheon, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C21D 10/00 (2006.01); C23C 8/28 (2006.01); B23K 9/235 (2006.01); B23K 9/167 (2006.01); B23K 26/21 (2014.01); C23C 8/80 (2006.01); B23K 26/32 (2014.01); B23K 9/23 (2006.01); B23K 26/60 (2014.01); B23K 26/352 (2014.01); C23C 8/26 (2006.01); B23K 103/04 (2006.01);
U.S. Cl.
CPC ...
C21D 10/005 (2013.01); B23K 9/167 (2013.01); B23K 9/23 (2013.01); B23K 9/235 (2013.01); B23K 26/21 (2015.10); B23K 26/32 (2013.01); B23K 26/352 (2015.10); B23K 26/60 (2015.10); C23C 8/26 (2013.01); C23C 8/28 (2013.01); C23C 8/80 (2013.01); B23K 2103/04 (2018.08);
Abstract
In a method of treating a nitrided/nitrocarburized workpiece, at least a portion of the workpiece is subjected to a first step in which at least one laser beam is moved in at least one pass over the portion, until the surface layer of the portion is transformed in part or in full, and until the distribution of the nitrogen concentration in the diffusion zone is modified. In a second step at least one laser beam is moved in at least one pass over said portion so as to enable the nitrogen concentration in the underlying diffusion layer to be reduced.