Small particle impingement comparator and method of determining numerical estimation of a steam path component surface roughness
US6957568B2 · kind B2 · utility
1Cited by
5References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 21, 2002 |
| Grant date | Oct 25, 2005 |
| Priority date | — |
| Expiry date | May 6, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/95607
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A small particle impingement comparator for surface finishes in excess of 1000 micro-inches standardizes the evaluation of such surface finishes within a turbine steam path. The small particle impingement comparator includes a plurality of sample cells arranged side-by-side in ascending order of roughness from 1190 micro-inches to 6950 micro-inches. With this comparator, users can compare the steam path component surface roughness with the roughness of the plurality of sample cells using a visual and tactile feel comparison.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.