This aluminum component was partially masked during a vibratory finishing process. The surface at right shows a typical machined surface pattern in which surface peaks and asperities are the predominant characteristic. The surface at left is typical of surfaces that have been treated with one of the mass finishing methods (such as barrel, vibratory or centrifugal finishing). These types of surfaces provide extremely useful substrates for subsequent surface finish operations, and are in themselves far superior in promoting part and component performance and endurance stability than surface finishes developed with single point-of-contact or manual methods.

Rotors

These impeller parts have been isotropically finished and then polished in a two stage process with centrifugal isotropic finishing equipment

Boeing-Titanium-Coupon -- Test1

The upper part exhibits a typical non-isotopic surface left by common machining or grinding methods.  The lower part shows an isotropic surface developed by a centrifugal abrasive processing operation

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Vibratory Isotropic Micro-Finishing Surface Effects.  Photos by Mark Riley, BV Proucts

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