Mechanical Finishes
Glass-Bead Blasted
Bead blasting creates a uniform cleanable matte texture. The passivation process is performed after all bead blasting operations.
(50-100 Ra)
Glass bead blasting is the operation of forcibly propelling
a stream of glass particles against a
surface under high pressure to smooth a
rough surface or remove surface
contaminants.
Satin Finish
Satin Finishes are 35 Ra (150 Grit) surfaces that have excellent cosmetic appeal but do not show the effects of “staining” or “streaking” that may appear on mirror brite surfaces when they are cleaned with germicidal/sterilizing solutions.
In addition, these finishes maybe be electropolished, if desired, to reduce surface roughness down to 25 Ra or better.
Provides the customer's equipment or part with a smooth, bright surface that's easily cleanable & pit free. Subsequent passivation removes any "embedded particles & fines" as a result of the fabrication process. Without removing the fines from the surface, the naturally occurring oxide layer might not form continuously on the surface thereby reducing the material's corrosion resistance.
(25 Ra or less)
Mirror Brite
Polishing & Buffing
Polishing of metal surfaces enhances the cosmetic appeal of the part. In addition,polishing acts to deburr the part, removes stressed material layers, machining or fabricationmarks and any embedded contaminants from the manufacturing of the part. The majordifference between “buffing” and “polishing”, is polishing removes material from the partsurface, whereas buffing just enhances the surface finish with no material removal. Quite often, a part is first polished to remove major cosmetic defects, and then the final finish is applied tothe surface (e.g satin, glass bead blasting, etc.) and then plated for to preserve the final cosmetic finish.