| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a flux-cored wire for Ar-CO<SB POS="POST">2</SB>mixed gas shielded arc welding, by which a good long-legged bead is obtained without causing weld defect. <P>SOLUTION: The flux-cored wire for Ar-CO<SB POS="POST">2</SB>mixed gas shielded arc welding contains, by mass based on the total mass of a wire, 4.0-4.4% TiO<SB POS="POST">2</SB>corresponding value of Ti oxide, 1.2-2.0% the sum of the MgO corresponding value of Mg and MgO, 0.3-0.6% Mg, 1.5-2.0% SiO<SB POS="POST">2</SB>, 0.3-1.0% ZrO, 0.3-0.7% FeO corresponding value of Fe oxide, 0.1-0.5% the sum of the Al<SB POS="POST">2</SB>O<SB POS="POST">3</SB>corresponding value of Al and Al<SB POS="POST">2</SB>O<SB POS="POST">3</SB>, 0.06-0.20% the sum of Na<SB POS="POST">2</SB>O and K<SB POS="POST">2</SB>O corresponding values of alkali metal compounds, ≤0.5% K<SB POS="POST">2</SB>O corresponding value, 0.03-0.10% F corresponding vale of F compounds, 0.04-0.12% C, 0.3-0.7% Si and 1.5-3.0% Mn. The total hydrogen content of the wire is ≤0.005%. <P>COPYRIGHT: (C)2012,JPO&INPIT |
