FIELD: coating application on current conducting materials to increase their resistance to wear, to restore dimensions of machines pieces, etc. SUBSTANCE: making low frequency contacts with pieces electrode is fed with matching the oscillations pulses of industrial current and ultrasonic oscillations are applied by pulses (in the form of waves series). Feeding of pulse of ultrasonic oscillations begins during electrode removal from piece surface and continues during current absence in discharge interval. EFFECT: improved process. 1 dwg
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