Buffing Principle of Operation

Buffing Principle of Operation

Buffing Principle of Operation - The surface to be buffed may be a die casting or stamping which does not require any preparatory treatment except cleaning. Buffing may be done by holding the workpiece in hand and bringing it into contact with a revolving buffing wheel. The operator presses the part against the charged buff with considerable pressure. This heavy pressure gives fast action and also heats up the work.

The temperature may rise from 90° to 150°C, which will not usually warp the work but does require careful handling. Some operators, while buffing, hold the hot workpiece with the help of a rag or apron.

This practice is highly dangerous since if the rag or apron is picked up by the revolving machine, the consequences could be more serious. Instead put the job down and wait for it to cool. There is no work rest or guard but a leather receptacle can be fitted below and behind the buffing wheel with advantage.

For buffing, the work should be held firmly against the periphery of the buffing wheel at a point on its front underside,

A buffed surface is produced in two distinct steps:

(i) Cutting down.

(ii) Coloring.

During the initial finishing stage of cutting down, minute surface irregularities are reduced or entirely eliminated. It is during the final stage of buffing (coloring) that the ultimate reflective highly lustrous surface is produced.