| 摘要 |
PROBLEM TO BE SOLVED: To provide a flux cored wire for gas shielded arc welding with which high-efficiency and excellent welding workability can be obtained without deteriorating impact performance and bead shape in upward welding and upward posture welding. SOLUTION: The flux cored wire for gas shielded arc welding with a flux filled in a steelmaking shell contains, based on the total mass % of the wire, 4 to 8% Ti oxide by a value in terms of TiO<SB>2</SB>, 0.8 to 1.5% SiO<SB>2</SB>,≤0.4% ZrO<SB>2</SB>, 0.1 to 0.4% K<SB>2</SB>O, 0.05 to 0.25% fluoride by a value in terms of F,≤0.5% Al<SB>2</SB>O<SB>3</SB>, 0.2 to 0.9% Al, 0.3 to 0.9% Si, 1.3 to 2.5% Mn, has ratios of Mn/Si of the Si and Mn of 2.3 to 5.0, and consists of the balance Fe and inevitable impurities. Also, the wire contains 0.2 to 1.5% Ni and/or 0.001 to 0.010 B. COPYRIGHT: (C)2006,JPO&NCIPI
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