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:
Apr. 11, 2006
Filed:
Jun. 16, 2003
Keigo Inui, Aichi, JP;
Hirotaka Minamikawa, Aichi, JP;
Toshiharu Noda, Aichi, JP;
Daido Tokushuko Kabushiki Kaisha, Nagoya, JP;
Abstract
A welding wire contains 0.025 mass % or less C, 1.3 mass % or less Si, 2.0 mass % or less Mn, 10 to 25 mass % Cr, 0.04 to 0.2 mass % N, Al and Ti in amounts (mass %) satisfying the relationship: e×e≧0.5, where x and y represent contents (mass %) of Al and Ti, respectively, O in an amount (mass %) satisfying the relationship: z<(x+y−0.01)/0.5, where z represents a total amount (mass %) of oxygen in the welding wire, and the balance being Fe and unavoidable impurities. Gas-shielded welding is performed using the welding wire and a shielding gas containing Ar and at least one of Oand CO, wherein, provided that volume % of the Oand COcontained in the shielding gas are p and q, respectively, the shielding gas satisfies the relationships: p≦10; q≦50; and p+q≦(x+y−0.01−0.5 z)/0.0006, whereby a weld improved in high-temperature resistance and crack resistance can be formed.