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US 10,376,998 B2Granted
Methods and tools for use in repairing gas engine turbine blades
AssigneeUnited Technologies Corporation
InventorsEdward Mierzejewski, William Rose
Life of this patent
Estimating the term…
Abstract
A repair tool and repair method for restoring gas turbine engine blade tips to a predetermined configuration is provided. The repair tool is an electrode that includes a tool body and a number of pins. The repair tool can be used to repair turbine blade tips through an electrical discharge machining process, such as a ram- or sink-type electrical discharge machining process.
Claims11
A method for repairing a gas turbine engine blade tip comprising:
- adding material to a damaged pocket of a tip of a gas engine turbine blade to form a partially repaired pocket;
- adding material to a damaged hole of the tip of the gas engine turbine blade to form a partially repaired hole;
- inserting a pin of the repair tool into the partially repaired hole, wherein the repair tool comprises a tool body comprising a conductive material, wherein the tool body comprises a tool body predetermined shape, wherein the tool body predetermined shape is substantially the same shape as the partially repaired pocket, wherein the pin comprises a conductive material and is coupled to the tool body, wherein the pin comprises a pin predetermined geometry, the pin predetermined geometry complementary to a geometry of the partially repaired hole;
- and
- repairing the partially repaired pocket by translating the repair tool in the z direction into the partially repaired pocket and the partially repaired hole, wherein a portion of the tool body is placed at least partially within the partially repaired pocket.
2 more elements
Dependencies are inferred from the claim text.