Improvement in Machining Rate with Mixed Electrolyte in ECDM Process

Electro Chemical Discharge Machining is one of the hybrid non-conventional machining process and it has wide scope for making intricate shapes in non-conducting materials. The mechanism of material removal in ECDM is thermal spark erosion (EDM) and chemical etching (ECM). Most of the researchers have used different base electrolytes - NaOH, KOH, NaCl etc for machining in ECDM process. In this paper an attempt has been made to machine a semi conducting engineering material with a mixed electrolyte of NaOH and KOH. Results have shown the improvement in machining rate in terms of material removal rate with mixed electrolyte. (C) 2016 The Authors. Published by Elsevier Ltd.