Abstract
Abstract Magnetic field assisted electrical discharge machining (MFAEDM) is the modification of in conventional EDM process by use of magnetic field on EN-31. This article explain the application of response surface methodology to analyzes the effect of various process parameters such as Ton, Toff and Ip on performance measures such as material removal rate (MRR), electrode wear rate (EWR) and overcut (OC). Analysis of variance was used to check the adequacy of response surface model and significance of process parameters on performance measures. Multi-objective desirability function has been applied to obtain the optimal process parameter settings. Thereafter, machined surface of EN-31 characterized through SEM and EDX. The novelty of this paper is to improve the strategies for flushing the debris which remain clogged in standard EDM in-between machining gap that will interrupts the regular discharge conditions and reduces cutting rate as well as deteriorate the surface characteristics.
Highlights
In previous years, several researchers focused their interest in modification of standard EDM with different hybrid techniques like powder mixed, electro discharge chemical machining, electro discharge grinding, electro-discharge milling and wire cut EDM
This article explain the application of response surface methodology to analyzes the effect of various process parameters such as Ton, Toff and Ip on performance measures such as material removal rate (MRR), electrode wear rate (EWR) and overcut (OC)
It was observed that MRR increased from 1.73mm3/min to 14.66mm3/min with the increase Ton from 10μs to 50μs with simultaneous decrease of Toff from 50 to 10μs. It was observed MRR increasing from 1.73mm3/min to 16.14mm3/min with simultaneous increase of Ip and Ton
Summary
Several researchers focused their interest in modification of standard EDM with different hybrid techniques like powder mixed, electro discharge chemical machining, electro discharge grinding, electro-discharge milling and wire cut EDM. Chattopadhyay et al [13] investigated on reverse polarity of magnetic field that influences the rotary EDM parameters that affecting the surface roughness. Wang et al [15] exposed the comparative analysis of dielectric for EDM of titanium alloy They achieved the highest material removal rate, a low electrode wear rate, fewer cracks, and better surface roughness in distilled water as compared to kerosene oil. Teimouri et al [16] studied the hybrid rotary tool EDM assisted with magnetic field achieved low tool wear rate and overcut. Lin et al [20] investigated the magnetic force assisted EDM machining parameters and obtain the best optimal solution for output responses through Taguchi method. Peruri and Chaganti [21] review the magnetic assisted machining processes and their application in various fields
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