A repair process for repairing damaged turbine air seals comprises completely removing the damaged air seals and forming a mechanical seat in the seal base. A replacement ring of the desired seal alloy is positioned in the seat and bonded to the base by a brazing process. The replacement ring is then machined to form reconstructed knife edge seals.
Method Of Making Filament Reinforced Composite Rings From Plural Flat Filamentary Spiral Layers
Karl Severin Jakobsen - Somers CT David Benjamin McLaughlin - South Windsor CT
Assignee:
United Technologies Corporation - Hartford CT
International Classification:
B29D 302 B29G 500
US Classification:
156169
Abstract:
Methods for forming a composite ring having unidirectional filaments embedded in a polymer matrix is disclosed. The filaments are spirally wound within the ring to form a plurality of essentially circular hoops which are in coaxial alignment with the expected lines of principle force. In one embodiment the formed ring is structurally integrated into the rotor of a gas turbine engine to reinforce the rotor and to restrain the rotor blades which extend outwardly of the ring.