Honing, Burnishing, Electropolishing

Honing
Honing is a finishing process, in which a tool called hone carries out a combined rotary and reciprocating motion while the work piece does not perform any working motion. The honing stones are held against the work piece with controlled light pressure. Honing is generally done on internal cylindrical surface, such as automobile cylindrical walls.
Following assumptions are considered during honing processes.
 Honing stones should not leave the work surface.
 Stroke length must cover the entire work length.
Burnishing
Burnishing process carries a pressing hardened steel rolls or balls into the surface of the work piece that imparting a feed motion to the work piece.

During the process, compressive stress is induced on the work piece
Electro polishing
Electro polishing is the reverse of electroplating. In this process, the work piece acts as anode and the material is removed from the work piece by electrochemical dissolution. The process is particularly suitable for polishing irregular surface since there is no mechanical contact between work piece and polishing medium.. This process is also suitable for deburring operation.