Process for improving cooling hole flow control
US5247766A · kind A · utility
12Cited by
11References
1Claims
0Family size
Inventor
Key dates
| Filing date | Jan 31, 1992 |
| Grant date | Sep 28, 1993 |
| Priority date | — |
| Expiry date | Jan 31, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24C1/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Undersized cooling holes for air cooling a gas turbine component or the like, are formed at low cost, and are later enlarged to increase the flow rate of cooling air therethrough by blowing a mixture of abrasive grit through the holes to enlarge them. Air without the grit is thereafter passed through the holes and the resulting increased flow rate is measured to see if it is at a satisfactory level. If it is not, the process is repeated until the desired accurate flow rate is achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.