Abstract
The Electrochemical Discharge Machining (ECDM) is a hybrid machining technology which combined with electro discharge machining and electro chemical machining process. In this research, electrochemical discharge drilling operation is carried out on conventional ceramic tile by using a designed and manufactured ECDM setup. The experiments were performed as per design of experimental technique of Taguchi L27 orthogonal array using MINITAB 17 software. The important process parameters that have been selected are voltage, rotation and electrolyte concentration with output response as machining depth and diametric cut. From the observations, it is found that the voltage is the most significant parameter for machining depth and diametric cut followed by electrolyte concentration and rotation.
Highlights
The materials of composites and ceramics can be machined with a combination of advanced conventional and non-conventional manufacturing processes
The electrochemical discharge machining (ECDM) process firstly introduced in the year 1968 by Kurafuji through attempting micro drilling on glass material [2]
The ECDM technology is a combination of two machining processes which include the electro discharge machining process (EDM) and the electrochemical machining (ECM) process
Summary
The materials of composites and ceramics can be machined with a combination of advanced conventional and non-conventional manufacturing processes. The ECDM technology can be excellently utilized for the machining of nonconductive materials like ceramics, glass and advanced composites In this process, the spark discharge exploits across the gas bubble layers produced on the workpiece surface, and erosion of material takes place [4]. The material removal rate and machined depth were enhanced due to abrasive tool electrodes in the electrochemical spark abrasive drilling process [12]. At the stage of higher voltage, a maximum critical current value take place This is because of high intensity of hydrogen bubbles produced at the cathode being coalesced to generate a film on tool. Increase in voltage causes breaking of gas film to produce spark because of high intensity flow of electrons from cathode to electrolyte [22]
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