Title: Improvement of EDM machining performance by brass coated copper electrode

Authors: Sivasankar Arumugam; Balamurugan Gopalakrishnan; Sivakumar Ganesan; Vivek Chandrasekaran

Addresses: Hindustan Institute of Technology and Science, Chennai, TN, India ' Coimbatore Institute of Technology, Coimbatore, TN, India ' Coimbatore Institute of Technology, Coimbatore, TN, India ' Coimbatore Institute of Technology, Coimbatore, TN, India

Abstract: The main objective of this work is to improve the selected output responses of EDM machining PH15-5 stainless steel material with brass coated copper electrode by controlling various process parameters such as voltage (V), current (Amp), pulse on duration (μs), pulse off period (μs), fluid pressure (Kg/cm²) and shape of tool. Well-designed experiments were conducted using an L27 orthogonal array according to the Taguchi method. The signal to noise (S/N) ratio associated with measured values was plotted, and factors affecting response factors have been obtained. The output of the experiments on a brass coated copper electrode was inferred and compared with a copper electrode. Machining performance has been improved slightly, and the desired quality of the machined surface feature was obtained while using the brass coated copper electrode.

Keywords: EDM; electrode material; coated electrode; brass coated copper; PH 15-5 stainless steel; SS.

DOI: 10.1504/IJMMM.2025.147843

International Journal of Machining and Machinability of Materials, 2025 Vol.27 No.3, pp.211 - 223

Received: 28 Aug 2024
Accepted: 18 Nov 2024
Published online: 04 Aug 2025 *

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