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:
Mar. 11, 2025
Filed:
Feb. 12, 2024
Neturen Co., Ltd., Tokyo, JP;
Takuya Suzuki, Tokyo, JP;
Masahiro Tsukahara, Tokyo, JP;
Osamu Idohara, Tokyo, JP;
Setsuo Takaki, Tokyo, JP;
Neturen Co., Ltd., Tokyo, JP;
Abstract
A method for manufacturing a steel joined body having a plurality of steels joined together, the method comprising: disposing a carbonaceous material on at least one joining surface of steels to be joined together; overlapping joining surfaces of the steels to be joined together having the carbonaceous material interposed between the joining surfaces; and heating the steels having the joining surfaces overlapped at a maximum temperature of 1150° C. or higher and 1500° C. or lower, the carbonaceous material being disposed to generate a liquid phase on the joining surfaces at the maximum temperature, the carbon concentration in a joint interface after high frequency induction heating was adjusted to 0.20 mass % or higher and 2.10 mass % or lower by controlling a heating and holding time at the maximum temperature.