Method for removing refractory metal cores
AssigneeRaytheon Technologies Corporation
InventorsDaniel A. Bales, Thomas DeMichael
Life of this patent
Estimating the term…
Abstract
A furnace for removing a molybdenum-alloy refractory metal core through sublimation comprising a retort furnace having an interior; a sublimation fixture insertable within the interior of the retort furnace, the sublimation fixture configured to receive at least one turbine blade having the molybdenum-alloy refractory metal core; a flow passage thermally coupled to the retort furnace configured to heat a fluid flowing through the flow passage and deliver the fluid to the molybdenum-alloy refractory metal core causing sublimation of the molybdenum-alloy refractory metal core.
Claims6
A process for removing a molybdenum-alloy refractory metal core from a turbine blade through sublimation comprising:
- installing at least one turbine blade in a sublimation fixture;
- installing said sublimation fixture in an interior of a retort furnace, a flow passage thermally coupled to said retort furnace configured to heat air flowing through said flow passage and deliver said heated air to a molybdenum-alloy refractory metal core;
- supplying the air from an air source to a coupling fluidly coupled to said flow passage;
- heating said air flowing through said flow passage;
- supplying said heated air from said flow passage to a junction;
- coupling said junction to said sublimation fixture;
- removing the molybdenum-alloy refractory metal core from said at least one turbine blade through sublimation with said heated air;
- and
- capturing waste discharged from the blade responsive to sublimation of said molybdenum-alloy refractory metal core responsive to said sublimation.
Dependencies are inferred from the claim text.