Coolant side surface roughness on airfoil castings by electrical discharge machining (EDM)
US6717095B2 · kind B2 · utility
4Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2002 |
| Grant date | Apr 6, 2004 |
| Priority date | — |
| Expiry date | Apr 18, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23H9/008
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention involves a process for increasing coolant side surface roughness on castings such as airfoils, shrouds, nozzles or the like by electrical discharge machining (EDM). An EDM electrode is shaped to fill completely or a portion of a cavity in the casting, the electrode is then connected to an electric discharge machine, and the internal surfaces of the internal core cavity are then machined to form a roughened surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.