AN IMPROVED ATIG WELDING PROCESS FOR JOINING HIGH WALL THICKNESS TUBE TO TUBE JOINTS

摘要

The invention relates to an improved process for ATIG welding of carbon steel grade high wall thickness tube to tube to produce part components in boiler system, the process comprising the steps of tack welding of the tubes after fitting the tubes without any root gap, providing ATIG flux in paste form using a brush on the surface area to be joined; holding the tubes in a welding system having a power source, head stock, tail stock, and welding torch; welding parameters are established and stored in the system; and welding the tubes in a single pass in IG position while rotating the tubes without feeding any filler wire.