Metal working – Method of mechanical manufacture – Impeller making
Patent
1998-06-29
2000-07-11
Cuda, Irene
Metal working
Method of mechanical manufacture
Impeller making
2940213, 416213A, B23P 1500
Patent
active
060854170
ABSTRACT:
A method for repairing the rim of a steam turbine rotor, and a weld material for repairing such rotors. The method generally includes the steps of removing a damaged rim and its associated dovetail region, so as to form a surface at the perimeter of the rim portion. A weld repair region is then formed on the surface, which is machined to reconstruct the rim portion and the dovetail region exclusively with the weld repair region. Thereafter, an appropriately configured blade is secured to the rim portion with the dovetail region. The method is particularly intended for the repair of a steel alloy rotor, such as a NiCrMoV, NiMoV and CrMoV alloy, while the weld repair is formed with a nickel-base superalloy whose mechanical and thermal properties are compatible with the repair method and the steel alloy over a broad temperature range.
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Anderson, III Karl Rudolph
Christoffel Robert Joseph
Crawmer Gerald Richard
Earvolino Louis Patrick
Ellis Edward Kenneth
Cuda Irene
General Electric Co.
Hartman Domenica N.S.
Lampe, Jr. Robert C.
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