NARROW GAP MIG WELDING DEVICE FOR WELDING ARC SHAPED PARTS

摘要

PURPOSE: A narrow gap MIG (metal inert gas) welding head is provided which welds the welding parts as tracing straight line and arc shaped welding parts, is capable of welding vertical and inclined parts and is capable of stabilizing arc. CONSTITUTION: In a narrow gap MIG welding device in which a welding torch(1) for supplying a welding power source and feeding a welding wire is arranged between two shield gas supply pipes(5), the narrow gap MIG welding device for welding arc shaped parts comprises an angle regulating nozzle clamp(4) for fixing the angles after regulating reciprocal angles of the two shield gas supply pipes(5) around the welding torch(1); a torch body clamp(3) to which the welding torch(1) is removably coupled; a sliding plate(21) which is installed on the torch body clamp(3); and a sliding guide part(2) which is fixed to a frame to sliding guide the sliding plate(21), wherein a torch angle regulating handle(32) is additionally installed on the torch body clamp(3) to slantly regulate the welding torch(1), a subsidiary gas chamber(7) for providing a welding part with a subsidiary shield gas is additionally installed on the circumference of the shield gas supply pipes(5), the shield gas supply pipes(5) are formed in an oval shape, and a contact tip(9) covered by an asbestos tape is installed at the front end part of a tip body part(8) that is installed continuously to a nozzle(11) positioned at the end of the welding torch(1).