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2020 | OriginalPaper | Chapter
A Comparative Study on Performance of 3D-Printed EDM Electrode with Conventional EDM Electrode
Authors : L. Mahipal Reddy, L. Siva Rama Krishna, S. Sharath Kumar, P. Ravinder Reddy
Published in: Recent Trends in Mechanical Engineering
Publisher: Springer Singapore
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Abstract
Electro Discharge Machining (EDM) is an unconventional machining process used to make hard metal tools and complex shapes, which are difficult to machine by the conventional machining process. Additive manufacturing is the process of creating a 3D object from a CAD Model by adding one layer over another layer. In this work, it is proposed to fabricate an EDM electrode using Direct Metal Laser Sintering (DMLS) 3D printing process and compare its performance with conventional EDM electrodes in terms of Material Removal Rate (MRR), Tool Wear Rate (TWR), and surface finish. The material used for printing the EDM electrode is aluminum AlSi10 Mg and it is proposed to print it on the Direct Metal Laser Sintering 3D Printing machine. The workpiece material used for the EDM process is steel alloy 681-08 of grade D3. The experiment is conducted on EDM with the DMLS electrode and conventional electrode by varying the peak Current (I), Pulse on time (Ton), and Pulse off time (Toff). A comparison of MRR, TWR, and surface roughness is made varying the above-mentioned parameters.