| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method of repairing the defective portion of cast parts for repairing the defective portion such as a recessed cavity revealed to the surface of the cast parts without making an internal defect remain. <P>SOLUTION: Since this method of repairing the defective portion includes a first step of forming a recessed part 11 having a sound layer 10 where the internal defect is suppressed in the inside by jetting high-pressure gas while melting recessed cavities 2 revealed to the surface of the cast parts 1 and its periphery and, next, a second step of repairing the cavities 2 by melting the recessed part 11 within the range of the thickness of the sound layer 10 and by applying build-up welding to it, the recessed cavity 2 revealed to the surface of the cast parts 1 can be repaired without making the internal defect remain. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
