PROCESS OF ELECTROCHEMICAL MACHINING OF SURFACES OF METAL ARTICLES Russian patent published in 2000 - IPC

FIELD: electrochemical polishing of metal articles containing copper alloys and made of stainless steel. SUBSTANCE: surfaces of metal articles are machined by anode working under electrohydrodynamic mode in electrolyte carrying lemon-acid singly-, doubly- or thrice-substituted ammonium or their mixtures with following percentage of components, per cent by mass: 2.0-18.0 lemon-acid singly-, doubly- or thrice- substituted ammonium or their mixtures, the balance being water. EFFECT: process makes it feasible to raise corrosion resistance of machined surfaces during storage and usage of articles, to improve stability of electrohydrodynamic mode of machining, accuracy of machining and serviceability of electrolyte. 2 tbl