| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas shielded arc welding method which does not cause spattering and can satisfactorily restrain weld defects such as undercut. SOLUTION: Gas shielded arc welding is executed by using a welding wire composed of 0.10 mass% or less C, 0.25-1.40 mass% Si, 0.7-2.0 mass% Mn, 0.003-0.040 mass% P, 0.001-0.040 mass% S, and unavoidable impurities and Fe as the balance, and a shielding gas composed of Ar gas or a mixture of Ar gas and He gas as the main composition and also 5-25 vol.% CO<SB>2</SB>and 5.5-15 vol.% O<SB>2</SB>. COPYRIGHT: (C)2005,JPO&NCIPI |
