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Superfinishing, also known as microfinishing [1] and short-stroke honing, is a metalworking process that improves surface finish and workpiece geometry. This is achieved by removing just the thin amorphous surface layer of fragmented or smeared metal left by the last process with an abrasive stone or tape; this layer is usually about 1 μm in magnitude.
It is produced by polishing the metal with a 120–180 grit belt or wheel finish and then softened with an 80–120 grit greaseless compound or a medium non woven abrasive belt or pad. #4 Dairy or sanitary finish. This finish is commonly used for the medical and food industry and almost exclusively used on stainless steel.
Tumble finishing, also known as tumbling or rumbling, [1] is a technique for smoothing and polishing a rough surface on relatively small parts. In the field of metalworking , a similar process called barreling , or barrel finishing , [ 2 ] works upon the same principles.
Surface grinding is done on flat surfaces to produce a smooth finish.. It is a widely used abrasive machining process in which a spinning wheel covered in rough particles (grinding wheel) cuts chips of metallic or nonmetallic substance from a workpiece, making a face of it flat or smooth.
Polishing may be used to enhance and restore the looks of certain metal parts or object on cars and other vehicles, handrails, cookware, kitchenware, and architectural metal. In other applications such as pharmaceutical, dairy, and specialty plumbing, pipes are buffed to help prevent corrosion and to eliminate locations where bacteria or mold ...
Mass finishing is a group of manufacturing processes that allow large quantities of parts to be simultaneously finished. The goal of this type of finishing is to burnish , deburr , clean, radius, de-flash , descale , remove rust , polish, brighten, surface harden , prepare parts for further finishing, or break off die cast runners.
The plateau finish is one characterised by the removal of "peaks" in the metal while leaving the cross-hatch intact for oil retention. [citation needed] The plateaued finish increases the bearing area of the finish and does not require the piston or ring to "break in" the cylinder walls. Plateau honing specification: [citation needed]
Machining is a manufacturing process where a desired shape or part is created using the controlled removal of material, most often metal, from a larger piece of raw material by cutting. Machining is a form of subtractive manufacturing , [ 1 ] which utilizes machine tools , in contrast to additive manufacturing (e.g. 3D printing ), which uses ...