| 摘要 |
PROBLEM TO BE SOLVED: To provide a welding method for repairing with which a crack is hardly caused again after welding and the remaining service life is long. SOLUTION: When the crack (4) is caused near a welded part (3) where base materials (1, 2) are welded, the crack portion is removed and the welding for repairing is applied to the position after removing the crack portion with the welding material to form the repairing welded part (5). Thereafter, an annealing is performed. The repairing welded part is more improved in creep fatigue strength than that of the original material by performing the welding for repairing to the repairing part with the welding material having higher creep fatigue strength than that of the original material, and thus, the development of crack again is restrained and the remaining service life is improved. COPYRIGHT: (C)2004,JPO
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