Parametric study of indigenously developed electrochemical diamond cut-off grinding setup using Inconel 925

Abstract

Electrochemical grinding (ECG) is a combination of electrochemical machining and conventional grinding processes, and when the diamond is used as an abrasive particle in a grinding wheel, the process is called electrochemical diamond grinding. This process is useful for machining newly developed and difficult-to-cut conductive materials. In this paper, the authors have performed an experiment on an indigenous developed electrochemical diamond cut-off grinding (ECDCG) setup for nickel-based superalloy (Inconel 925) by applying one parameter at a time (OPAT) method. The parametric study of material removal rate (MRR), surface roughness (Ra), and overcut has been done. It also includes morphological study of the machined surface. It was noticed that MRR improves, with increment in any machining parameters, while better Ra can be observed at the moderate value of supply voltage and electrolyte concentration. Moreover, it was also found that, the overcut has been decreased with increase in wheel speed and feed rate.