METHOD FOR ELECTROLYTE-PLASMA POLISHING OF TURBOMACHINE BLADES Russian patent published in 2022 - IPC C25F3/16 

FIELD: metal products electrolytic-plasma polishing.

SUBSTANCE: invention relates to electrolytic-plasma polishing of metal products, mainly from titanium, nickel and iron-nickel alloys, and can be used in turbomachinery when processing blades to ensure the necessary physical, mechanical and operational characteristics of turbomachinery parts, and also as a preparatory operation before ion-implantation modification of the surface of the part and the application of protective ion-plasma coatings. The method includes immersing a blade in a bath with an electrolyte, forming a vapor-gas shell around the treated surface of the blade, and igniting a discharge between the blade and the electrolyte by applying an electric potential to the blade. At the same time, before the blade is immersed in the electrolyte, one metal rod is installed in front of the input and output edges of the blade along their entire length with a uniform gap between the rod and the input and output edges of the blade, a positive electric potential is applied to the blade and rods, and a negative electric potential is applied to the electrolyte, and polishing the blades lead during the formation of a vapor-gas shell common to the rods and blades.

EFFECT: invention ensures the necessary physical, mechanical and operational characteristics of turbomachinery parts.

5 cl, 2 dwg, 2 ex