Patent ID: 6713723
Filing Date: 2004-03-30
Classification: B23K

Abstract:
A basic flux cored wire having a mild steel or an alloy steel sheath filled with flux, characterized in that the flux essentially comprise of, with respect to the total weight of the wire:0.3 to 3.0% Ti and Ti oxide (TiO2-converted value); 1.0 to 2.5% Si and Si oxide (SiO2-converted value); 0.1 to 1.5% Mg and Mg oxide (MgO-converted value); 1.5 to 4.0% Mn and Mn oxide (MnO-converted value); 0.2 to 1.5% Al and Al oxide (Al2O3-converted value); 0.1 to 1.0% Zr and Zr oxide (ZrO2-converted value); 0.2 to 3.5% CaF2; and 0.01 to 0.5% K2O, with the proviso that the components satisfy the basicity(B) of 0.5 to 4.5 in the basicity equation (1) defined as B=(CaF2+MgO+MnO+K2O)/(TiO2+SiO2+Al2O3+ZrO2).