| 摘要 |
PURPOSE:To improve the cracking resistance of weld metal and the bead quality by combining a wire containing specific weight % Mn, Cr, Si, etc., with welding flux containing prescribed % CaF2, Al, SiO2, etc., to perform the welding. CONSTITUTION:The component composition of the wire is made to, by weight ratio, 0.01-0.15% C, 0.4-2.5% Mn, 8.0-11.0% Cr, 0.5-1.2% Mo, 0.05-1.3% Ni, 0.03-0.30% V, 0.02-0.12% Nb, 0.005-1.5% Al, 0.004-0.100% N, <=0.05% Si and <=0.01% O. The component composition of the flux is made to 25-70% CaF2, 8-30% CaO or MgO, 2-35% Al2O3 or ZrO2, 0.5-7% Al and <=5% SiO2 which are combined with the wire to perform the welding. Since the intercrystalline cracking is prevented, the cracking resistance of a welded zone and the bead quality are improved. |
