Repair of a shrouded blade
US9810069B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2013 |
| Grant date | Nov 7, 2017 |
| Priority date | — |
| Expiry date | May 28, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49318
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention discloses a novel and improved method for repairing a shrouded blade and a reconditioned shrouded blade. More specifically, a way of measuring a set of previously-operated blades to determine their post-operation geometric characteristics is provided where an offset due to deformation of the hardface surfaces of the shroud is determined. The hardface surfaces of the shroud are rough-machined and blade-compatible material is added to the hardface surfaces. A first side hardface surface of the shroud is then machined to a desired dimension offset relative to an originally manufactured blade after which a second side hardface surface is machined such that the distance between the hardface surfaces satisfies the cross-shroud dimension, which is similar to that of an originally manufactured blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.