FIELD: process engineering.
SUBSTANCE: invention relates to machine building and may be used in hard-facing of part groove inner surfaces. Container with current conducting balls is vibrated at 20-30 Hz to make said balls reciprocate through part grooves. Low voltage is applied to container case and processed part isolated therefrom. Weakly conducting fluid is fed into container for transfer of low voltage (4-8 V) between said balls.
EFFECT: uniform cold-hardening, ruled out micro cracks.
1 dwg, 1 ex
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