초록 ▼

A method for remanufacturing turbine vane clusters of gas turbine engines is disclosed. Concepts and techniques for salvaging undamaged vanes from a damaged vane cluster are developed. In accordance with the method taught, protective coatings on the vane clusters are removed and residual stresses in

A method for remanufacturing turbine vane clusters of gas turbine engines is disclosed. Concepts and techniques for salvaging undamaged vanes from a damaged vane cluster are developed. In accordance with the method taught, protective coatings on the vane clusters are removed and residual stresses in the vanes are relieved before salvageable vanes are separated from their original vane cluster.

대표청구항 ▼

A method for remanufacturing turbine vane clusters of the type having two or more coated vanes extending between a common inner platform and a common outer platform, comprising the steps of: inspecting damaged vane clusters and selecting complementary vanes and contiguous platforms for combination i

A method for remanufacturing turbine vane clusters of the type having two or more coated vanes extending between a common inner platform and a common outer platform, comprising the steps of: inspecting damaged vane clusters and selecting complementary vanes and contiguous platforms for combination into a reconstructed cluster; stripping the coating materials from the selected vanes and from the portions of the platforms contiguous thereto; relieving residual stresses in the entire vane clusters in which the selected vanes are contained prior to the step of separating the selected vanes from the clusters; separating the selected vanes and the portions of the platforms contiguous thereto from the vane clusters after the step of relieving stresses from the vane clusters; machining bond faying surfaces on the platforms of the complementary vanes selected for combination; cleaning the machined faying surfaces; bonding the complementary vanes at the faying surfaces to form a reconstructed vane cluster; solution heat treating the reconstructed vane cluster; applying corrosion resistant coating to surfaces of the vane cluster which are to be exposed to hot working medium gases; precipitation hardening the coated vane cluster.