METHOD FOR ELECTROLYTE-PLASMA REMOVAL OF POLYMER COATINGS FROM SURFACE OF PART FROM ALLOYED STEELS Russian patent published in 2015 - IPC C25F1/00 C25F5/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to a technology of electrolyte-plasma removal of protective coatings from polymer materials from surface of parts from alloyed steels, namely from stainless trip steels of high strength and ductility, and can be used at recovery of especially important parts of aircrafts, for example torsions of lifting propellers of helicopters. The method involves loading of the part into an electrolyte, formation around the processed surface of the part of a steam-gas envelope and discharge ignition between the processed part and the electrolyte by supplying an electric potential to the processed part. The electrical potential of 270 V to 300 V is applied to the processed part, and a water solution of salt of ammonium sulphate with a concentration of 4 to 8 g/l is used as an electrolyte; removal of the coating is performed at the temperature of 70°C to 90°C till complete removal of the coating.

EFFECT: complete removal of a polymer coating so that a polished surface of a part is obtained at reduction of labour intensity of a process.

7 cl, 1 dwg, 1 ex