Superfinishing (also known as Microfinishing) is a metalworking process that improves the surface finish and workpiece geometry. This is achieved by removing the thin amorphous surface layer left by the previous process. After a metal piece is ground to an initial finish, it is then superfinished with a finer abrasive. It can eliminate microscopic burrs left by grinding and remove grinding induced defects such as noise, ferrite caps and chatter.
The advantages of superfinishing include: increasing part life, decreasing wear, closer tolerances, higher load bearing surfaces, better sealing capabilities and elimination of a break period. It has been proven that superfinishing certain parts can make them more durable, sometimes lasting up to four times longer.
Common applications can include, but is not limited to: steering rack components; transmission components; fuel injection components, camshaft lobes, hydraulic cylinder rods and more.
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