FIELD: electric-physical treatment of electrically conducting materials.
SUBSTANCE: at electric spark discharge rectified pulsating electric current provides polar transfer of electrode material onto rotating article. Mineral oil is supplied between electrically conducting electrodes for creating specific pressure 0.2 - 0.5 MPa. Amplitude values of voltage are sustained in range 1 - 50 kV at pulse frequency from 500 Hz up to 100 kHz. Invention allows increase thickness layer of electric spark strengthening up to 0.4 mm.
EFFECT: improved quality of working, increased thickness of strengthened layer, improved resource of restored parts.
1 dwg
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