| 摘要 |
PROBLEM TO BE SOLVED: To provide a Ni-based alloy flux cored wire which is excellent in MAG weldability of Ni steel and Ni-based alloy, small in defective weld, and excellent in hot crack resistance. SOLUTION: A shell is formed of a Ni-based alloy, the filling ratio of the flux is 10-30 wt.% to total weight of a wire, and the flux has the composition consisting of, by weight to the total weight of the wire, 2-10% Ti02, 0.1-3% SiO2, 0.1-2% Al1O3, 0.4-3% ZrO2, 0.01-0.4% in terms of Li, Na and K in total weight of at least one kind selected from the group consisting of Li, Na and K compounds, 1-25% metal in total, and 4-15% slug in total, and regulating P to be <=0.0l0%, S to be <=0.0l5%, Bi to be <=0.005%, and B to be <=0.003%. In addition, a compound of at least one kind of rare earth metal to be selected from a group consisting of Y, La and Ce is contained by 0.01-0.4% in terms of the rare earth metal.
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