Week 4: Surface finishing processes (Polishing, Electroplating)

Lecture Notes Page# 4

Polishing and buffering

Polishing and buffering are similar surface finishing operations. Polishing is usedto
remove scratches and burrs from a machined surface. It develops a very smoothsurface by
means of abrasive grains embedded to a polishing wheel rotating athigh rpm.
Rotating speed is equivalent to 2300 meter per minutes. The rotatingwheels are made
of softer materials like canvas, leather or paper. Thus, the wheelsare enough flexible to finish
the cavities and internal of intricate shapes.

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