METHOD OF ELECTRIC EROSION AND CHEMICAL TREATMENT OF PARTS WITH DIELECTRIC COATINGS Russian patent published in 2014 - IPC B23H5/02 

FIELD: electricity.

SUBSTANCE: method involves gradual treatment of a part by tubular electrode tool connected to negative pole of process current source, and additional tubular electrode connected together with the part to positive pole of process current source, where electrode tool is rotated against longitudinal axis along with operational movement. At the first stage, dielectric coating is removed at the necessary part area by feeding conductive work fluid to processing area through additional electrode, and contact the fluid with work end of electrode tool; at the second stage, base material of the part is removed to form a given profile by feeding electrolyte through electrode tool, stopping feed of work fluid through additional electrode at the same time.

EFFECT: significantly simplified and less labour-consuming treatment process for parts with dielectric coating, enhanced treatment quality.

6 dwg, 2 ex