Micromachining of Ceramics by Electrochemical Discharge Process Considering Stagnant and Electrolyte Flow Method

Electrochemical discharge machining is a versatile machining process for microdrilling, microtexturing, and microgrooving of variety of glasses, ceramics and composites. Stationery, rotary or vibrating or combination of tool movement is possible for machining. This paper presents a brief overview of tool mechanisms used and machining of ceramics using stagnant and electrolyte flow method using copper and stainless steel tool by varying the voltage, electrolyte concentration, duty factor and pulse on time. It is observed that electrolyte flow method has a high material removal rate of 0.72 mg/min but a high diametric overcut of 0.860 mm for that combination of process parameters.