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:
Aug. 02, 2022
Filed:
Dec. 14, 2016
Jfe Steel Corporation, Tokyo, JP;
Minoru Honjo, Tokyo, JP;
Tatsumi Kimura, Tokyo, JP;
Katsuyuki Ichimiya, Tokyo, JP;
Kazukuni Hase, Tokyo, JP;
JFE STEEL CORPORATION, Tokyo, JP;
Abstract
A method for selecting a rail steel and a wheel steel comprising: selecting a rail steel and a wheel steel to be used as a rail and a wheel on an actual track, respectively, the rail steel and the wheel steel having a specific chemical composition, such that the rail comprises a head portion having a yield strength YSof 830 MPa or more, the wheel comprises a rim portion having a yield strength YSof 580 MPa or more, and a ratio YS/YSof the yield strength YSat the head portion of the rail to the yield strength YSat the rim portion of the wheel falls within a range of: 0.85≤YS/YS≤1.95 (1).