Method of restoring alloy depletion in an airfoil around cooling holes
US12203384B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2023 |
| Grant date | Jan 21, 2025 |
| Priority date | — |
| Expiry date | Sep 15, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/701
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method of reducing depletion of elements from an airfoil includes disposing a bond coating on the airfoil, where the airfoil comprises cooling channels. The airfoil includes a material that has an initial composition. A cooling hole is machined in the airfoil to contact the cooling channels such that a fluid travelling in the cooling channel may be discharged via the cooling hole. The machining of the cooling hole results in a formation of a depleted region around the cooling hole. The depleted region is depleted of a portion of the initial composition of the airfoil. A top coat is disposed on the bond coat. The airfoil is subjected to a heat treatment at a temperature effective to promote diffusion of elements from a non-depleted region to the depleted region around the cooling hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.