FILLET SUBMERGED ARC WELDING METHOD OF LOW TEMPERATURE STEEL

摘要

PURPOSE:To form a weld metal having excellent cracking resistance by combining a specifically composed wire and flux and executing welding. CONSTITUTION:The wire which contains 60-88wt% Ni and 10-38wt% Mo, contains 2.0wt% Al if necessary and is limited to <=0.15wt% Si and <=5.0wt% Cr is used. The flux which contains 20-80wt% metallic fluoride and 0.5-7.0wt% Al, is limited to <=8.0wt% SiO2 and does not contain substantially Si is used. The fillet submerged arc welding is executed by combining the above- mentioned flux. Solidification cracking and microcracking are thus prevented and excellent bead appearance is obtd.