METHOD OF ELECTRO-ABRASIVE MACHINING BY CURRENT-CONDUCTING WHEEL Russian patent published in 2013 - IPC B23H5/06 

FIELD: process engineering.

SUBSTANCE: invention relates to method of electrical physical-chemical machining, particularly, to electro-abrasive grinding of inner surfaces of parts from hard-to-machine materials by current-conducting wheel. Proposed method comprises subjecting the part and grinding wheel to electrical physical-chemical effects during the entire grinding cycle, controlling machining process and dressing by feeding asymmetric different-polarity current pulses. Note here that one common electric circuit electrolyte-wheel is created while water-based electrolyte containing NaNO₃ 3%, NaNO₂ 1%, Na₂CO₃, 0.5% is sprayed into grinding zone by nozzle.

EFFECT: control over wheel cutting capacity, maximum efficiency of grinding hard-to-machine surfaces.

2 dwg