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:
Jun. 06, 2023
Filed:
Oct. 23, 2019
Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.), Kobe, JP;
Mazda Motor Corporation, Aki-gun, JP;
Ryota Yamasaki, Kanagawa, JP;
Kazuya Ikai, Kanagawa, JP;
Masaaki Tanaka, Hiroshima, JP;
Mitsugi Fukahori, Higashihiroshima, JP;
Kobe Steel, Ltd., Kobe, JP;
Mazda Motor Corooration, Aki-gun, JP;
Abstract
A gas shielded arc welding method includes welding a steel sheet with a tensile strength of 780 MPa or more using a shielding gas containing Ar in an amount of 92 vol. % to 99.5 vol. %. In the gas shielded arc welding method, a value calculated from the following expression (1) is 0.20 or more: {√v/(D/2)}×10−{(100−C)×I/v}×0.1 . . . (1), where Crepresents an Ar content (vol. %) in the shielding gas, D represents an inner diameter (mm) of a nozzle from which the shielding gas is supplied, v represents a welding speed (cm/min), and I represents a welding current (A).