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AssigneeGeneral Electric Company
InventorsJohn Francis Nolan, Gerald Richard Crawmer, Eloy Vincent Emeterio
Estimating the term…
A method of repairing a turbine rotor wheel having a damaged dovetail includes removing the damaged dovetail from the turbine wheel, leaving a turbine wheel body and welding a ring about the turbine wheel body in place of the removed damaged dovetail. During the welding process, including during preheating, welding or stress relieving, the temperature of the wheel body and ring is differentially controlled to introduce residual stresses in the ring. After welding a dovetail is formed in the ring for receiving turbine bucket dovetails. As a result, the ring has residual compressive stresses in a cold condition of the turbine whereby reduced net stresses in the ring in the location of the new dovetail during hot turbine operating conditions are reduced.
A method of repairing a turbine rotor wheel having an annular damaged dovetail comprising the steps of:
A method of repairing a turbine rotor wheel having an annular damaged dovetail comprising the steps of:
A method of repairing a turbine rotor wheel having an annular damaged dovetail comprising the steps of:
Dependencies are inferred from the claim text.