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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.:

US 9624559 B1

PDFFull Text
Expired
Date of Patent:
Apr. 18, 2017

Filed:

Mar. 05, 2013

Bearing steel excellent in rolling-contact fatigue properties and method for producing same

Applicant:

Kobe Steel, Ltd., Kobe-shi, JP;

Inventors:

Masaki Kaizuka, Kobe, JP;

Yosuke Shindo, Kobe, JP;

Manabu Fujita, Kobe, JP;

Assignee:

Kobe Steel, Ltd., Kobe-shi, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Roy King

Assistant Examiner:

Jophy S Koshy

Int. Cl.
CPC ...
C21D 6/00 (2006.01); C21D 9/00 (2006.01); C21D 9/40 (2006.01); C21D 1/32 (2006.01); C22C 38/50 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); F16C 33/64 (2006.01); F16C 33/62 (2006.01);
U.S. Cl.
CPC ...
C21D 9/00 (2013.01); C21D 1/32 (2013.01); C21D 6/00 (2013.01); C21D 6/004 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 9/40 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/50 (2013.01); C21D 2201/00 (2013.01); F16C 33/62 (2013.01); F16C 33/64 (2013.01);
Abstract

A bearing component having increased rolling-contact fatigue life, the bearing component being made of a bearing steel that satisfies a predetermined chemical composition, and Si (boundary Si), Mn (boundary Mn), Cr (boundary Cr), Cu (boundary Cu), Ni (boundary Ni), and Mo (boundary Mo) included in a matrix phase region (boundary surface region) from the surface of spheroidized cementite to 20 nm away satisfy the formula:9.0≦1.4×boundary Si+1.8×boundary Mn+5.5×boundary Cu+4.2×boundary Ni+4.8×boundary Cr+5.5×boundary Mo.

Find Patent Forward Citations

Kaizuka, Masaki. (2017). Bearing steel excellent in rolling-contact fatigue properties and method for producing same (U.S. Patent No. 9624559). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9624559

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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