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:
Nov. 17, 2020
Filed:
Aug. 23, 2016
Jfe Steel Corporation, Tokyo, JP;
Chikaumi Sawanishi, Tokyo, JP;
Koichi Taniguchi, Tokyo, JP;
Katsutoshi Takashima, Tokyo, JP;
Hiroshi Matsuda, Tokyo, JP;
Rinsei Ikeda, Tokyo, JP;
JFE Steel Corporation, Tokyo, JP;
Abstract
A resistance spot welding method inhibits, in accordance with the electrode angle, the occurrence of cracking in the weld regardless of the steel grade. The resistance spot welding method satisfies relationships:2··()when 0≤<1(3·−1)·()when 1≤<10(+)·()when 10≤<20where H (ms) is an electrode force retaining time after completion of current passage, A (degrees) is an electrode angle of the electrodes, t (mm) is a sheet thickness of a steel sheet having a largest sheet thickness among the steel sheets, T (MPa) is a tensile strength of a steel sheet having a highest tensile strength among the two or more steel sheets, and F (N) is the electrode force.