Apparatus and method for rejuvenating cooling passages within a turbine airfoil
US6743350B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2002 |
| Grant date | Jun 1, 2004 |
| Priority date | — |
| Expiry date | Jul 24, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23H9/10
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An electrode for rejuvenating a cooling passage within an airfoil, the electrode including a tip, an end, a conductive core extending between the tip and the end, and an insulating coating disposed on the conductive core. The insulating coating exposes a number of conductive strips of the conductive core extending between the tip and the end. The insulating coating forms a number of insulating portions and further exposes a number of spacer portions of the conductive core longitudinally positioned between the insulating portions. The insulating portions substantially span a distance between the tip and the end and are positioned between the conductive strips.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.