AUTOMATIC BUTT WELDING METHOD FOR OBLIQUEECUT PIPE

摘要

PURPOSE:To realize an automatic butt welding with a combination of a simple system and device, by moving the bevel working device and then the automatic welding machine along the circular track substance attached outside each pipe to be welded and in parallel to the face of the pipe end. CONSTITUTION:The circular track substance 1 is attached detachably outside the oblique-cut and right-angle cut pipes 7 and 9 by the fixing tool 6 and in parallel to the plane including each pipe end face. Then the bevel working device 2 possessing the gas torch 8 is mounted to the substance 1. And then the device 2 is moved along substance 1 to give an bevel working of an angle alpha to each pipe end. Then an automatic welding machine incorporating the welding torch, the welding wire feeding device and others is mounted to the substance 1 which is attached to one pipe to be welded in parallel to the face including the welding line. The welding machine is then moved along the substance 1 to secure a mutual butting between both pipe ends for an automatic welding.