Single position turbine rotor repair method

Details Single position turbine rotor repair method Single position turbine rotor repair method

1998-11-27

2000-09-12

Cuda, Irene

Metal working

Method of mechanical manufacture

Impeller making

2940208, B23P 600

Patent

active

061159174

ABSTRACT:
A method of repairing a turbine rotor wheel having an annular damaged dovetail includes removing the annular damaged dovetail from the turbine wheel, leaving a wheel body having a rim. A forged ring is welded to the rim and dovetails are formed in the forged ring to accommodate turbine bucket dovetails. The welding process including preheating, welding, and stress-relieving are performed while the rotor under repair is disposed in a lathe for rotation about a horizontal axis. The turbine rotor repair is accomplished from start to finish without displacing the rotor from the lathe.

REFERENCES:
patent: 5299353 (1994-04-01), Nazmy et al.
patent: 5522134 (1996-06-01), Rowe et al.
patent: 5524340 (1996-06-01), Galbraith et al.
patent: 5606796 (1997-03-01), Fraser
patent: 5606797 (1997-03-01), Reynolds
patent: 5673745 (1997-10-01), Jackson et al.

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