| 摘要 |
PROBLEM TO BE SOLVED: To provide a flux-cored wire for gas-shielded arc fillet welding which has good welding workability such as good slag removability and good bead shape and bead appearance acquired even in the case of two electrode high-speed horizontal fillet welding for a black steel plate. SOLUTION: The flux-cored wire for gas-shielded arc fillet welding comprises, by mass percent to a whole wire mass, 2.5-4.0% of Ti oxide in terms of TiO<SB>2</SB>, 1.2-2.0% of Si oxide in terms of SiO<SB>2</SB>, 0.1-0.7% of MgO in terms of MgO including Mg in MgO, 0.1-0.4% of Zr oxide in terms of ZrO<SB>2</SB>, not more than 0.3% of Al oxide in terms of Al<SB>2</SB>O<SB>3</SB>, 0.05-0.30% in total of Na and K in terms of Na<SB>2</SB>O and K<SB>2</SB>O, 0.03-0.20% of fluorocompound in terms of F, not more than 0.4% of Fe oxide in terms of Fe0, and the balance being mainly iron powders, alloying agents, deoxidizing agents and unavoidable impurities. COPYRIGHT: (C)2006,JPO&NCIPI |
