| 摘要 |
PURPOSE:To obtain a weld metal which exhibits high toughness by incorporating a specific ratio of specific components into the sheath metal and/or flux of a flux cored wire. CONSTITUTION:3-20% CaF2 (by the total weight % of the wire, hereafter the same), 0.05-2% Fe-Ti or Ti oxide in terms of TiO2 and 0.002-0.05% B alloy or B oxide in terms of B are incorporated into the sheath metal and/or flux of the flux cored wire for gas shielded arc welding. Ni is further added as a constitutional requirement thereto in order to improve the toughness of the weld metal.
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