Method of replacing damaged aerofoil
US9500080B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 4, 2015 |
| Grant date | Nov 22, 2016 |
| Priority date | — |
| Expiry date | Sep 4, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2240/30
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method is provided of replacing a damaged blade of an integrally bladed rotor assembly including a disc and a plurality of blades extending outwardly from a rim of the disc. The method includes the steps of: removing the damaged blade to leave a blade repair stub projecting from the rim; locating sacrificial supports at the underside of the rim beneath the repair stub, the supports projecting axially beyond the trailing and leading edges of the rim; depositing metal around the trailing and leading edges of the repair stub, the deposited metal, supported by the sacrificial supports, projecting axially beyond the trailing and leading edges of the rim; attaching a replacement blade to the repair stub by linear friction welding; and removing excess deposited metal, upset metal from the linear friction welding, and the sacrificial supports.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.