BOTH-SIDED WELDING METHOD OF BUTT WELDING JOINT WITH V GROOVE CONFIGURATION

摘要

PURPOSE: A two-sided welding method for a butt welding joint with a V-shaped groove is provided to improve the cutting speed of a member without reducing welding efficiency by employing a 5~30 degree V-shaped groove. CONSTITUTION: A two-sided welding method for a butt welding joint with a V-shaped groove is as follows. A member to be welded is grooved in a V shape through plasma arc cutting and then the member is welded through submerged arc welding. The angle of the V-shaped groove is 5~30 degrees and a submerged arc welding wire is woven with a width of 5~10mm in a direction perpendicular to the welding direction so that the risk of welding defects is reduced. A welding filler is spread in the groove to improve welding efficiency.