METHOD OF MULTISTAGE ELECTROLYTE-PLASMA POLISHING OF PRODUCTS MADE OF TITANIUM AND TITANIUM ALLOYS Russian patent published in 2009 - IPC C25F3/16 

FIELD: metallurgy industry.

SUBSTANCE: invention refers to the field of electrochemical polishing of metal products and may be used in turbomachinery upon blades treatment. Method includes submersion of treated metal product in aquosystem and voltage application to it - positive as compared to electrolyte; under voltage action gas-vapour layer is formed between surface of treated product and electrolyte, at that voltage value and hold time of product are changed at each stage, constant energisation is ensured during first and second stages including moment of change-over from first stage to second one; at that at first stage of polishing voltage 120-170 V is applied to treated product and hold time of product under this voltage is 0.3-0.8 min, and at second stage voltage is increased to 210-350 V and hold time of product under this voltage is 1.5-5 min.

EFFECT: roughening of part surface no less than 0,08…0,12 mcm.

16 cl, 1 tbl, 1 ex