Abstract
ABSTRACT In this experimental study, the effect of magnetic field on electrical discharge machining (EDM) performance was evaluated for Inconel-625. The magnetic-field-assisted EDM (MFA-EDM) process is defined as a combination of EDM and magnetic field environment. Permanent magnets were installed at the proper distance for the creation of a magnetic field and the experiments were conducted using the Cu tool. Magnetic field intensities of 0.396 T and 0.665 T were applied during EDM operations. Performance of the EDM under the action of different magnetic fields was evaluated based on material removal rate (MRR), tool wear rate (TWR), and average surface roughness (Ra). The experimental results showed that higher MRR, higher TWR, and lower Ra values were observed under the action of the magnetic field. The scanning electron microscope (SEM) analysis also confirmed a better surface quality under the action of the magnetic field. The SEM micrograph showed the presence of lesser cracks present on the machined surface with MFA-EDM.
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