METHOD FOR DRY LOCAL ELECTROPOLISHING BLISK BLADES AND WORKING CONTAINER FOR ITS IMPLEMENTATION Russian patent published in 2019 - IPC C25F3/16 

FIELD: machine building.

SUBSTANCE: invention relates to electropolishing of complex shape parts. Method comprises fastening blisk on holder, dipping blisk blades into electroconductive porous granules, filling working container, made from sulphonated copolymer of styrene-divinyl benzene and filled with electrolyte, connecting blisk to anode, and electroconductive granules to the cathode and polishing to produce the specified roughness of blisk blades surface. Working container used is an elastic cover from electrically insulating material with an electrode located inside, elastic cover is put on the treated blade, the elastic cover is filled with electroconductive granules, the granules are brought into vibration motion and back-and-forth movement along the back and trough of blade, which provide for uniform washing with back and trough blades granules. Working container is made from elastic electrically insulating material in the form of a jacket with dimensions and shape ensuring coverage of the entire treated surface of the blisk blade and its placement in the inter-blade space.

EFFECT: invention can be used in turbomachine building during blisk blades processing of gas turbine compressors.

12 cl, 5 dwg