Press-fitting corrosion resistant liners in nozzles and casings
AssigneeDresser-Rand Company
InventorsByron L. Mohr, David C. Seib
Life of this patent
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Abstract
An apparatus and method for protecting an inner radial surface of a housing of a turbomachine from corrosion. The method includes tapering the inner radial surface of the housing and a corresponding outer radial surface of a corrosion-resistant liner, and heating the housing to increase a diameter of the inner radial surface of the housing. The method also includes inserting the corrosion-resistant liner at least partially into the housing, and attaching the corrosion-resistant liner to the inner radial surface of the housing a solid-state bonding process.
Claims12
A method for protecting an inner radial surface of a housing of a turbomachine from corrosion, comprising:
- tapering the inner radial surface of the housing and a corresponding outer radial surface of a corrosion-resistant liner;
- heating the housing to increase a diameter of the inner radial surface of the housing;
- inserting the corrosion-resistant liner at least partially into the housing;
- and
- attaching the corrosion-resistant liner to the inner radial surface of the housing a solid-state bonding process.
A method for protecting a turbomachine from corrosion, comprising:
- tapering an annular inner surface of a housing to define first and second inner diameters;
- tapering an annular outer surface of a corrosion-resistant liner to define first and second outer diameters, the first outer diameter and the first inner diameter being substantially the same size, and the second outer diameter and the second inner diameter being substantially the same size;
- enlarging the first and second inner diameters, comprising:
- placing the housing in a furnace at a temperature of from about 700° F. to about 900° F.;
- heating the furnace to an increased temperature of from about 1200° F. to about 2100° F.;
- and
- holding the housing in the furnace for about 1 hour per inch of a cross-sectional thickness of the housing;
- removing the housing from the furnace while protecting the housing in a protective atmosphere;
- inserting the corrosion-resistant liner at least partially into the housing such that the first outer diameter is substantially aligned with the first inner diameter;
- and
- fixing the corrosion-resistant liner to the housing by explosive cladding or by hot press forging the corrosion-resistant liner to the annular inner surface by applying a pressure of from about 0.1 MPa to about 100 MPa to the corrosion-resistant liner using a hydraulic press forge.
Dependencies are inferred from the claim text.