Trunnion hole repair method utilizing interference fit inserts
AssigneeUnited Technologies Corporation
InventorsMark E. Addis, George H. Reynolds
Life of this patent
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Abstract
The present application discloses a method for repairing a damaged counterbore in a variable vane shroud. A layer of base material is removed from the vane shroud adjacent the counterbore such that a damaged portion of the counterbore is removed. A shrink-fit insert having a size slightly larger than that corresponding to the layer of base material removed from the shroud is placed into the area of removed material such that the counterbore is restored to pre-damaged dimensions upon installation of the shrink-fit insert.
Claims16
A method for repairing a damaged counterbore in a variable vane shroud, the method comprising:
- removing a layer of base material from the vane shroud adjacent to the counterbore such that a damaged portion of the counterbore is removed;
- supercooling an insert prior to installation, the shroud having a size slightly larger than that corresponding to the layer of base material removed from the shroud;
- and
- placing the insert into the area of removed material such that the counterbore is restored to pre-damaged dimensions upon installation of the insert.
A method for repairing a damaged variable vane shroud, the method comprising:
- removing a layer of base material from the vane shroud adjacent to a counterbore such that a damaged portion of the counterbore is removed;
- measuring the amount of material removed;
- creating an insert based on the measurements of the amount of removed material;
- supercooling the insert;
- and
- installing the insert adjacent the vane shroud, wherein the insert returns the vane shroud to its design parameters.
Dependencies are inferred from the claim text.