Abstract
The present study examines the abrasive mixed electrical discharge machining (AMEDM) of aluminium composites. Taguchi method has been used to optimize the material removal rate (MRR) and tool wear rate (TWR) considered as performance response for composite machining using AMEDM. In this analysis, boron carbide (B 4 C) abrasive particles were mixed with different concentration to the kerosene oil that acts as a dielectric fluid (DF). It has been found that with the addition of B 4 C powder, MRR is increased and TWR is decreased. Based on S/N ratio analysis, results showed that the MRR in machining of through holes with AMEDM on composites is significantly influenced by abrasive concentration and peak current. Concentration of abrasive particles has a significant impact on the TWR. Optimum process parameters are found based on S/N ratio analysis, For MRR, value are specified as pulse-on-time (A2) 120 µs, peak current (B3) 9 A, concentration of abrasive particle (C2) 10 gm/l and pulse-off-time (D2) 40 µs and for TWR, value are specified as pulse-on-time (A3) 150 µs, peak current (B2) 6 A, concentration of abrasive particle (C2) 10 gm/l and pulse-off-time (D3) 50 µs.
Published Version
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