Operational feasibility of Maglev EDM using powder mixed dielectric for machining Ti-grade 5 alloy
DOI:
https://doi.org/10.58368/MTT.22.5.2023.50-55Keywords:
Maglev, EDM, PMEDM, Titanium, UreaAbstract
The current work aims to investigate the feasibility of the novel Maglev (electro-discharge machine) EDM for machining aerospace Ti-grade 5 alloy using urea powder mixed dielectric. The novel setup utilizes the combined effect of permanent and electromagnet to diminish arcing and short-circuiting. The set control parameters were 27 V open-circuit voltage and 1 A peak current while maintaining a duty factor of 95.5%. The dielectric fluid is prepared using urea powder mixed with deionized water at a concentration of 75g/l. The measured discharge voltage and discharge current were 25 V and 200 mA respectively. The machined surface of the workpiece has been analyzed using scanning electron microscopy (SEM) micrograph and energy dispersive spectroscopy (EDS) report. The newly developed Maglev EDM feasibility to machine Ti-grade 5 alloy using urea mixed dielectric has been confirmed in the present work with an average MRR of 0.293 mg/min.
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