Back to results
US 8,770,927 B2Granted
Abrasive cutter formed by thermal spray and post treatment
AssigneeUnited Technologies Corporation
InventorsChristopher W. Strock, Changsheng Guo
Life of this patent
Estimating the term…
Abstract
A seal for a gas turbine engine component having an airfoil with a radial outward end and a radial inward end, one of which is bare metal. A seal member is adjacent to the bare metal end of the airfoil wherein the seal member is coated with a abrasive layer having a laser engraved surface with the top of the surface has less than about 5% of the surface area of the base of the abrasive layer.
Claims17
A method of forming a seal in a rotating gas turbine engine component, the method comprising:
- providing an airfoil with a radial outward end and a bare metal airfoil tip at a radial inward end;
- providing a seal member adjacent to the radial inward end of the airfoil wherein the seal member is coated with an abrasive layer having a laser engraved surface comprising a grooved pattern oriented at an angle to the axis of rotation wherein the top of the grooved surface has less than about 5% of the surface area of the base of the abrasive layer.
A gas turbine engine comprising:
- an engine casing extending circumferentially about an engine centerline axis;
- and
- a compressor section, a combustor section, and a turbine section within said engine casing containing rotating components;
- wherein at least one of said compressor section and said turbine section includes at least one airfoil and at least one seal member adjacent to the at least one airfoil, wherein a tip of the at least one airfoil is bare metal and the at least one seal member is coated with an abrasive layer having a laser engraved surface comprising a grooved pattern oriented at an angle to the axis of rotation wherein the top of the grooved surface has less than about 5% of the surface area of the base of the abrasive layer.
1 more element
A gas turbine engine component comprising:
- an airfoil with a radial outward end and a radial inward end;
- a seal member adjacent to the radial inward end of the airfoil wherein the seal member is coated with a abrasive layer having a laser engraved surface comprising a grooved pattern oriented at an angle to an axial direction wherein the top of the grooved surface has less than about 5% of the surface area of the base of the abrasive layer.
Dependencies are inferred from the claim text.