抄録
In this paper, we investigated the all position welding process by CO2 gas arc welding and a new multiple-electrodes automatic arc welding process which coupled CO2 gas arc welding with Submerged arc welding.
The former intends to apply automatic arc welding to all positions of fillet and butt weld for welding construction, and the latter does to form welds equal to base metal by controlling deposited metal metallurgically on the process of welding for high notch toughness quenched and tempered steel, and moreover of improvement and high efficiency of workability of welding.
