| 摘要 |
PURPOSE:To obtain a noncoated electrode wire being able to avoid any chance for defect welding such as slag enfolding and/or inferior penetration, by filling the powdered flux made of essential elements such as BaF2, iron oxide, Al, Mg and Mn in a metallic sheath at a predetermined ratio to a quantity of the wire. CONSTITUTION:The powdered flux made of essential elements such as 31-75% BaF2, 2-25% iron oxide, 3-15% Al, 3-15% Mg and 0.5-10% Mn is prepared. Next, the required noncoated electrode wire is manufactured by filling the flux in a metallic sheath made of mild steel etc. at a ratio of 15-30% to a total quantity of the wire. If such electrode wire is used for the arc welding, the welding work efficiency at vertical position should be remarkably improved and higher welding current is also applicable. |
