POLISHING AND BUFFING

摘要

Mechanical finishing refers to an operation that alters the surface of a substrate by physical means such as polishing and buffing. Polishing plays a vital role in the development of a quality product. The term polishing is not to be confused with buffing. The definition of polishing is surface enhancement by means of metal removal and is generally done by an abrasive belt, grinding wheel, setup wheel, and other abrasive media. A definite coarse line pattern remains after such a polishing operation. This polishing effect removes large amounts of metal from a particular surface. Buffing is the processing of a metal surface to give a specific or desired finish. The range is from semibright to mirror bright or high luster. Polishing refers to an abrading operation that follows grinding and precedes buffing. The two main reasons for polishing are to remove considerable amounts of metal or nonmetallics and smooth a particular surface. This operation is usually followed by buffing to refine a metallic or nonmetallic surface.