| 摘要 |
PROBLEM TO BE SOLVED: To suppress the variation in the quality of every welding about the repairing method of holes of a thin metallic sheet-shaped article. SOLUTION: A hole 52 is respectively covered with a first sealing sheet 44, a first donor sheet 46, a second donor sheet 64 and a second sealing sheet 47. The first sealing sheet 44 and the second sealing sheet 47 are respectively melted at higher temperature than the first donor sheet 46, a plug 66 and the second donor sheet 64. A stack 42 is locally heated to sufficiently high temperature at which the first donor sheet 46, the plug 66, the second donor sheet 64 and the structure 40 of the workpiece are locally melted in the place of the hole 52 by using a current source. After that, the stuck 42 is cooled in order to form a weldment by solidifying all of the molten materials. COPYRIGHT: (C)2006,JPO&NCIPI |
