FIELD: mechanical engineering; applicable in surface treatment in electronic, optical and other industries. SUBSTANCE: worked part and shield form cathode to which negative potential is connected, and anode is connected with positive potential. Ionic cathode effect manifests itself in increase of current density. Sizes of shield, its configuration and distance between shield and part-cathode comprises the know-how. EFFECT: reduced working time by several times, higher quality of working due to more clean surface and reduced roughness of surface. 1 dwg
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