Fluid reaction surfaces (i.e. – impellers) – Rotor having flow confining or deflecting web – shroud or... – Axially extending shroud ring or casing
Patent
1991-10-21
1993-09-28
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
Rotor having flow confining or deflecting web, shroud or...
Axially extending shroud ring or casing
416196R, 416224, 416241R, F01D 522, F01D 524, F01D 528
Patent
active
052482413
ABSTRACT:
A component is provided with a relative undersize in an area to be subjected to increased stress, for instance, through temperature. The component is made of a hardenable steel. The undersize is overlaid with a non-hardenable steel thereby to provide the full size. A second layer on top of the first layer can be provided. When the second layer is metallurgically bonded in a manner that generates heat, it does not cause a heat affected zone in the base hardenable steel. Blades for steam turbines benefit from this procedure.
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Ball Kenneth A.
Ortolano Ralph J.
Pepe John P.
Serpa Richard E.
Smith Patrick O.
Larson James A.
Look Edward K.
Southern California Edison Co.
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