| 摘要 |
PURPOSE:To obtain filler metal with the satisfactory separating property of slag by allowing to contain the specific quantity of TiO2, CaF2, AlF3, Mn and Ti in a wire formed of the stainless steel skin and further, filling flux with a specific value of a simple substance or a compound of Bi therein. CONSTITUTION:The titled TIG welding filler metal uses a pipe or band steel as the skin and indicates the wire having a wire cross section such as a shape where the edge of the band steel is tucked in the inside, a shape where the end faces are butted to each other, etc., and the filling flux 8 is filled in the inside of the skin 7 which is formed tubularly from the pipe or the band steel of the stainless steel. The filling flux 8 contains, by weight, 3-12% TiO2, 0.05-5% AlF3, 0.5-2.5% Mn and 0.05-1.5% Ti and further, the total of the simple substance or the compound of B''i contains 0.001-0.5% expressed in terms of Bi. A satisfactory root pass reverse side beam is obtained in the TIG one-side welding of the stainless steels by a synergetic effect of these elements.
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