| 摘要 |
PROBLEM TO BE SOLVED: To provide a welding method for filling in for a drum can where, in the part to be subjected to fillet welding in a drum can, the generation of welding defects such as the protruding of a weld bead and the blowby of an arc is prevented, and further, the generation of sputters and welding burning are prevented as well. SOLUTION: In the welding method for filling in for a drum, a drum can D is positioned and mounted on a turn table 11 in such a manner that the inside of a chime part 3 thereof is made parallel to a positioning member, and is rotatively driven to a welding torch 10b whose welding posture is fixed, and on the other hand, a rotary backing body 30 in a rotary water-cooled backing means 13 is welded while backing is performed by continuously applying a fixed pressure to the outer circumferential face of the drum can corresponding to a welding part P across the chime part 3 between the positioning member. In addition, inert gas by a shield box is used in combination. COPYRIGHT: (C)2006,JPO&NCIPI |
