Repair method for structure and repair welding apparatus

Details Repair method for structure and repair welding apparatus Repair method for structure and repair welding apparatus

2006-04-04

2006-04-04

Heinrich, Samuel M. (Department: 1725)

Electric heating

Metal heating

By arc

C219S121850

Reexamination Certificate

active

07022938

ABSTRACT:
A repair method for a structure having an open flaw in a welding heat affected portion, including, removing at least a part of the open flaw and thereby forming a concave portion in the welding heat affected portion, forming build-up weld layers so as to fill the concave portion, treating a surface of the build-up layers to reduce tensile residual stress by means of at least one of laser peening, shot blasting and water jet machining. Also disclosed is an apparatus suitable for carrying out the repair method.

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