| 摘要 |
PROBLEM TO BE SOLVED: To provide a titanium-based flux-cored wire for welding which can provide a weld part having excellent porosity-resistance without degrading the welding work efficiency, and can provide excellent bead shape and bead appearance. SOLUTION: The flux-cored wire 1 contains, based on the entire wire mass, 0.5-1.0% Si, 1.5-3.0% Mn, 0.1-0.3% Al, 0.01-0.3% Mg, 1.0-4.0% TiO<SB>2</SB>, 0.1-0.5% SiO<SB>2</SB>, 0.1-0.5% ZrO<SB>2</SB>, 0.3-0.7% MgO, and 0.02-0.10% Na compound and/or K compound in terms of Na and K, respectively, and the total content of Al and Mg is 0.15-0.5%. Further, total amount of fluorine is 0.02-0.10% based on the entire wire mass. Synthetic fluoro mica having a fluorine content of 5-30% is contained at least as a part of fluorine source. The ratio of fluorine in the synthetic fluoro mica to the total fluorine amount is 0.5-0.9. COPYRIGHT: (C)2011,JPO&INPIT
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