FIELD: oxidation of chemical equipment pieces. SUBSTANCE: apparatus has a power source, an electrolyzer with electrolyte, a processed piece, power leads, a reservoir with electrolyte, a voltage comparison unit, a signal converter, a transferring pump and regulator valves. Constant regulated change of electrolyte level in the electrolyzer ensures production of qualitative coating on a processed piece due to uniform growth of coating thickness. EFFECT: apparatus decreases power consumption and improves quality of coatings during processing large scale pieces. 1 dwg
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