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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 12129557 B1

PDFFull Text
Date of Patent:
Oct. 29, 2024

Filed:

Sep. 03, 2019

High surface-pressure resistant component and production method therefor

Applicants:

Daido Steel Co., Ltd., Nagoya, JP;

Jatco Ltd, Fuji, JP;

Inventors:

Junya Miyauchi, Nagoya, JP;

Kohei Yamaguchi, Nagoya, JP;

Ryohei Ishikura, Nagoya, JP;

Keiichiro Kamiya, Tokyo, JP;

Hiroki Terada, Tokyo, JP;

Kazumasa Uchida, Fuji, JP;

Yasuo Ito, Fuji, JP;

Hiroaki Toyota, Fuji, JP;

Shunsuke Ohshima, Fuji, JP;

Assignees:

DAIDO STEEL CO., LTD., Nagoya, JP;

JATCO LTD, Fuji, JP;

Attorney:

MCGINN I.P. LAW GROUP, PLLC

Primary Examiner:

Jessee R Roe

Int. Cl.
CPC ...
C23C 8/22 (2006.01); C21D 6/00 (2006.01); C21D 8/00 (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 38/48 (2006.01);
U.S. Cl.
CPC ...
C23C 8/22 (2013.01); C21D 6/004 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 8/005 (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 38/48 (2013.01);
Abstract

A high surface-pressure resistant component includes a steel having a composition containing, in mass %, 0.17-0.23% of C, 0.80-1.00% of Si, 0.65-1.00% of Mn, 0.030% or less of P, 0.030% or less of S, 0.01-1.00% of Cu, 0.01-3.00% of Ni, and 0.80-1.00% of Cr, with the remainder being Fe and unavoidable impurities, in which the surface layer C concentration of a carburized and quenched layer is 0.70-0.80% in mass %.

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