| 摘要 |
PURPOSE:To provide a titled coated arc welding electrode which decreases the amt. of fume by coating a coating material contg. particularly metallic fluoride, carbonate, MgO, TiO2, SiO2, Mn, fluorotetrasilicate mica, etc. in specified amt. on a carbon steel core wire by using a binder. CONSTITUTION:A coating material is composed of 5-13% carbonate (where <=6% total of carbonate except MgCO3 and MnCO3), 1-9% metallic fluoride, 6-18% MgO, 15-26% TiO2, 7-18% SiO2, 2-12% Mn, 1-6% fluorotetrasilicate mica {KMg2.5(SiO10)F2}, 15-50% Fe powder, 0.5-6% >=1 kinds among Ti, Mg, Al, Si and SiC, <=6% Al2O3 according to need, and <=10% ZrO2. A binder is added to such coating material and the material is coated on a carbon steel core wire, whereby a low hydrogen type coated arc welding electrode for fillet welding is obtd. The amt. of the fume to be generated is decreased by the use of such welding electrode without affecting adversely welding operability and bead shape. |
