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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 12782255 B1

PDFFull Text
Date of Patent:
Nov. 03, 2026

Filed:

Mar. 08, 2021

Hardness prediction method of heat hardened rail, thermal treatment method, hardness prediction device, thermal treatment device, manufacturing method, manufacturing facilities, and generating method of hardness prediction model

Applicant:

Jfe Steel Corporation, Tokyo, JP;

Inventors:

Kenichi Osuka, Tokyo, JP;

Hiroyuki Fukuda, Tokyo, JP;

Satoshi Ueoka, Tokyo, JP;

Assignee:

JFE Steel Corporation, Tokyo, JP;

Attorney:

DLA Piper LLP (US)

Primary Examiner:

Darrin D Dunn

Int. Cl.
CPC ...
G01N 3/40 (2006.01); C21D 1/18 (2006.01); C21D 9/04 (2006.01); C21D 11/00 (2006.01); G01N 25/18 (2006.01);
U.S. Cl.
CPC ...
G01N 3/40 (2013.01); C21D 1/18 (2013.01); C21D 9/04 (2013.01); C21D 11/005 (2013.01); G01N 25/18 (2013.01); G01N 2203/0076 (2013.01); G01N 2203/0212 (2013.01); G01N 2203/0222 (2013.01);
Abstract

The hardness of a rail after the rail having a temperature equal to or higher than an austenite region temperature is forcibly cooled in a cooling facility is predicted. A plurality of sets of data for learning composed of a cooling condition data set and output data of hardness are acquired using a model that performs computing by using a cooling condition data set having at least a surface temperature of the rail before the start of cooling and the operating conditions of the cooling facility as input data and the hardness inside the rail after the forced cooling as output data.

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Osuka, Kenichi. (2026). Hardness prediction method of heat hardened rail, thermal treatment method, hardness prediction device, thermal treatment device, manufacturing method, manufacturing facilities, and generating method of hardness prediction model (U.S. Patent No. 12782255). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12782255

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