| 摘要 |
PURPOSE:To provide a composite wire for gas shielded arc welding which provides good slag removability and impact toughness of a weld metal, produces less welding fume and is usable for all position welding by packing a specifically composed flux in a steel pipe as a sheath metal. CONSTITUTION:A composite wire for gas shielded arc welding is usable for all position welding including vertical down welding and generates less fume in the stage of welding. A flux prepd. by adding 2-10% TiO2, 0.05-2.0% SiO2, 0.2- 2% ZrO2, adding Al and Al2O3 so as to be contained at 0.2%<=Al2O3+2Al<= 3.5% and further adding 1-6.5% a deoxidizing such as Si, Mn, Mg or the like except Al, and further adding B and B2O so as to be contained at 0.001<=B+0.1 B2O3<=0.03% with respect to the total weight of the wire is wet mixed with water glass as a binder and the mixture is packed in the wire, whereby the composite wire for gas shielded arc welding is obtd. |
