METHOD FOR DIAMOND-ELECTROCHEMICAL GRINDING OF METALS AND ALLOYS WITH LOW HARDNESS Russian patent published in 2020 - IPC B23H5/04 B23H5/06 

FIELD: metallurgy.

SUBSTANCE: invention relates to combined treatment of metals and alloys of low hardness, which combines electroerosion, electrochemical and mechanical action on treated surface. Proposed method comprises filling electrolytic gap between treated surface and diamond grinding wheel, supplying process current of direct polarity to surface processing zone and surface treatment by rotary diamond grinding wheel in several stages. At the first stage, processing is performed at transverse motion of diamond grinding wheel feed and process current supply to processing zone with stress higher than that of processed material. At the second stage, processing is carried out without supply of process current, at that, speed of transverse motion of diamond grinding wheel supply is increased and conditions are created for grinding of diamond grinding wheel. Method may include an additional third stage, during which microroughnesses of the treated surface are burnished.

EFFECT: higher efficiency of grinding process due to simplification of process algorithm and use of salting effect to improve characteristics of surface layer.

3 cl, 1 ex