| 摘要 |
PROBLEM TO BE SOLVED: To provide a repairing method for a profile wherein no thermal deformation occurs on its surface, with high welding strength while a welded part does not peel. SOLUTION: A welding electrode 7 is placed at a damaged part 8 on the surface of profiles 1 and 2. A blade 21 of an ultrasonic wave cutter 20 is pressed to the welding electrode 7 and the profiles 1 and 2 for melting by frictional heat, so that the blade 21 is pushed-in as far as a rear surface 11 of the profiles 1 and 2, thus continuous welding is done between a front surface 9 of the profiles 1 and 2 and the rear surface 11. |
