Method for fluent mass surface texturing a turbine vane

Details Method for fluent mass surface texturing a turbine vane Method for fluent mass surface texturing a turbine vane

1989-10-20

1992-02-25

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Coating, specific composition or characteristic

298891, 298897, 295271, 2940204, 511631, 511641, 51317, F01D 500, B24B 100

Patent

active

050908707

ABSTRACT:
An apparatus and method for providing vanes with a surface texture of less than 10.times.10.sup.-6 inches rms. The method employs a fluent mass having a particulate size less than 1.5 inches and abrasive materials in a centrifugal barrel to achieve a surface texture between 11-27.times.10.sup.-6 inches rms. A refinement cut employs a finer abrasive and a cycle time of less than 30 minutes to provide a burnished surface texture of between 5-8.times.10.sup.-6 inches rms. A final coloring cycle, employing only a coloring compound, is employed to provide a highly reflective surface texture between approximately 4-7.times.10.sup.-6 inches rms.

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Hignett, J. Bernard, Metal Finishing, "The Versatility of Centrifugal Barrell Finishing", The Harper Buffing Machine Co., East Hartford, CT, Feb. 1980.
Compressor Blades, JT8D Engine Manual (PN 481672), Pratt & Whitney Aircraft, Feb. 1984.

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