TIC ARC WELDING METHOD FOR REPAIRING

摘要

PURPOSE:To obtain a good welding quality by feeding to the elliptical repairing groove engraved on a repairing defective part the electrode W which is revolvable centering around a welding wire and made about in parallel thereto and the welding wire and by forming the welding bead with traveling. CONSTITUTION:A welding wire 1 is fed vertically inside a repairing groove 10 by the insulating tip 2 which is provided in parallel to the electrifying body 3 with W electrode 4 at its tip part. The whole welding torch body consisting of the welding wire 1, insulating tip 2, electrifying body 3 and W electrode 4 is held traveling capably by the traveling mechanism inside the repairing groove 10 of the base metal 8 and to the welding wire 1 the current in the same direction with that of a welding arc 5 is fed continuously or intermittently from the wire heating power source. The W electrode 4 performs the continuous welding along the prescribed sequence by the traveling mechanism. The same welding quality as that of the ordinary TIG welding joint is thus obtd. and the welding operability can be improved as well.