Surface Integrity in EDM of Aluminum Bronze with Nickel Powder Mixed Fluid.

Technology and research developments in powder mixed electric discharge machining (PMEDM)

“…Number of authors have reported their research on finish machining phase [5][6][7][8][9][11][12][13][14]22,23], but research on rough machining phase has been reported only by Zhao et al [3]. It was observed that the PMEDM has a different machining mechanism from conventional EDM.…”

“…4. Effect of nickel powder on surface abrasion [9]. which indicates that the deposited layer thickness increases with the increase in concentration of nickel powder.…”

“…This results in the stable machining without short circuit between the electrode and the workpiece. In another study, Uno et al [9] observed that nickel powder mixed working fluid modifies the surface of aluminum bronze components. The nickel powder was purposely used to deposit a layer on EDMed surface to make the surface abrasion resistant.…”

“…The results show that the PMEDM can distinctly improve the surface finish and surface quality to obtain near mirror like surfaces at relatively high machining rate [5][6][7]. Moreover, the surface produced by PMEDM has high resistance to corrosion and abrasion [8,9]. In this process, a suitable material in fine powder form is mixed into the dielectric fluid of EDM.…”

Surface Morphology of Die-Steel Machined with Al Powder Mixed Distilled Water and Kerosene in Edm A Comparison

“…Increase in the concentration of Ni powder in the kerosene, the recast layer became more uniform and thick during the machining of aluminium-bronze 2 . Type of powder suspended in the dielectric fluid also found to influence the spark gap, which is more for Al powder when compared to others, Due to this Al powder resulted in good surface finish.…”