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:
Jun. 28, 2022
Filed:
Nov. 16, 2018
Applicant:
Nippon Steel Corporation, Tokyo, JP;
Inventors:
Takahide Umehara, Tokyo, JP;
Masato Yuya, Tokyo, JP;
Assignee:
NIPPON STEEL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/38 (2006.01); C22C 38/18 (2006.01); C23C 8/26 (2006.01); C22C 38/06 (2006.01); C22C 38/32 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/46 (2006.01); C22C 38/48 (2006.01); C22C 38/50 (2006.01);
U.S. Cl.
CPC ...
C23C 8/26 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/008 (2013.01); C22C 38/02 (2013.01); C22C 38/06 (2013.01); C22C 38/18 (2013.01); C22C 38/32 (2013.01); C22C 38/38 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01);
Abstract
The present invention has as its technical problem the provision of a part excellent in contact fatigue strength or wear resistance in addition to the rotating bending fatigue strength. In the present invention, the contents of the constituents of the steel, in particular C, Mn, Cr, V, and Mo, are adjusted in accordance with the targeted properties and nitrided parts are prepared while controlling the nitriding potential.