Commonly used process parameters for electrolytic grinding

       (1) After testing and optimization, the electrolyte formula for electrolytic grinding of thermal spray coating is recommended as follows (mass ratio):



        Disodium hydrogen phosphate 3%~5%

        Sodium nitrite 2%

        Potassium nitrite 2%

        Water 91%~93%

       (2) Process parameters of the grinding wheel. The grinding wheel can use conductive grinding wheel with diamond bronze adhesive, or graphite and silver-infiltrated conductive grinding wheel.

        Grinding wheel speed =15m/s~20m/s

        Axial feed

        fa=0.5m/min~1m/min (internal and external cylindrical grinding)

        fa=10m/min~15m/min (surface grinding)

        Workpiece speed =10m/min~20m/min

       Radial feed fr=0.05mm/double stroke~0.15mm/double stroke

      (3) Voltage and current specifications.

       Roughing voltage 8v~12v

       Current density 20A/cm2~30A/cm2

       Finishing Voltage 6V~8V

      Current density 10A/cm2~15A/cm2

      When the above process parameters are applied, if the grinding surface appears blackened, the voltage should be reduced or the radial feed should be reduced, and the axial feed should be increased.