Method of repairing a turbine blade and blade repaired thereby

Details Method of repairing a turbine blade and blade repaired thereby Method of repairing a turbine blade and blade repaired thereby

2006-02-14

2006-02-14

Edmondson, Lynne R. (Department: 1725)

Metal working

Method of mechanical manufacture

Impeller making

C029S889000, C029S889700, C228S119000, C219S137200

Reexamination Certificate

active

06996906

ABSTRACT:
A method of repairing a turbine blade and the blade repaired thereby. The blade comprises a platform that has become bowed as a result of high temperature creep, with the result that the platform has a concave surface and an oppositely-disposed convex surface. The method generally comprises welding the concave surface to build up a weldment on the concave surface, cooling the weldment during which the weldment shrinks, the convex surface becomes flatter, and the concave surface beneath the weldment becomes flatter, and then removing a surface portion of the weldment so as to create a substantially flat weldment surface overlying the substantially straightened concave surface.

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patent: 62-282796 (1987-12-01), None

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