| 摘要 |
PURPOSE:To obtain a composite wire for gas shield welding of less fume and obstacle, by mixing a flux, which is wet ground with water-glass and dried, to a metallic sheath. CONSTITUTION:Potassium silicate is suitable as water-glass; and in respect to the addition quantity, it is proper that 1.5-7l potassium silicate of about 41.5Be' having a mole fraction of about 3.2 is added per 100kg flux. In respect to the flux, it is desirable that it contains 20-55% TiO2 and contains one or more of oxides among SiO2, MgO, Al2O3, and ZrO2 as other components and has 0.005- 4% Bi in a form of metal, oxide, compound, etc. A carbon steel is usually used as materials of the metallic sheath. For the purpose of improving the property of the welding metal, alloy elements such as Ni, Cr, Mo, Nb, and V may be added to the wire. |
