| 摘要 |
PROBLEM TO BE SOLVED: To provide a welding method in which the mechanical characteristic of a weld metal is not degraded in the carbon dioxide gas shield arc welding to be performed at an especially high interpass temperature. SOLUTION: Steel containing, by mass, 0.005-0.25% Ti and≤0.010% Nb is welded by the carbon dioxide shield arc welding by using a welding wire having the composition consisting of≤0.02% C, 0.4-1.2% Si, 1.7-2.2% Mn, 0.005-0.070% Al, 0.05-0.14% Ti, 0.0020-0.0100% B,≥0.4% Mo, <0.0039% N, 1.5-6% Ni, and the balance Fe with inevitable impurities. COPYRIGHT: (C)2005,JPO&NCIPI |
