Analysis of process parameters of electrochemical micromachining by using response surface methodology

This research paper presents the machinability of ground-granulated blast furnace slag (GGBS) which is reinforced with aluminum 6061 metal matrix composites using electrochemical micromachining (EMM). EMM process is the most prominently utilized machining process in various fields of micro fabrications in aerospace technology, automobile and other industrial applications. In this research a central composite design was adopted while designing the experiments. Temperature of the electrode, voltage, electrolyte concentration and percentage composition of reinforcement (6%, 9% and12% GGBS) are chosen as the input machining parameters. Radial overcut (ROC) and material removal rate (MRR) are considered as response parameters. Additionally, multi criterion decision making namely grey relational analysis (GRA) is utilized to find out the optimal input parameters. From GRA, the optimal parameters are 400C, 12 V, 25 g/l and 9% of GGBS composition. (c) 2021 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the International Conference on Advances in Materials Research-2019.