The Effect of Non-Conductive Al2O3nano Powder with Flushing Pressure on Electrical Discharge Machining Characteristics

In recent times, nano powder mixed electrical discharge machining (NPMEDM) is one of the leading machining processes when applications are based on nano powders.The process is a unique way of machining wherein electrical discharge machining (EDM) is clubbed with nano powders in dielectric fluid.This new combination produces better results and improves the process responses, like material removal and surface roughness, which are very well handled.The intention here is to focus on eliminating the frequent usage of finis hing processes.An experimental work was realized to determine the influence of the machining parameters, namely, flushing pressure (FP), peak current (I), and pulse on time (TON) on the dependent variables, especially on the material removal rate and surface roughness.during the finishing stage, to break through the constraints generated by the conditions of the EDM process.It was found that the lower MRR was achieved at both the higher and lower flushing pressures with nano powder at 0.2 kg/cm and 1 kg/cm, respectively.The optimal flushing pressure with nano powder has been found to be around 0.5 kg/cm and does not significantly influence the material removal rate.At the same time, the use of nano powder in EDM with flushing at optimum value has shown promising results in enhancing surface roughness.Hence, we can state that the flushing pressure (FP), when combined with the nano powder in the dielectric, is significant at its optimal value in the finishing operations in EDM.