Magnetic Field Assisted EDM: New Horizons for Improved Surface Properties

Bains, Preetkanwal Singh; Sidhu, Sarabjeet Singh; Payal, H. S.

doi:10.1007/s12633-017-9600-7

Cited by 31 publications

(11 citation statements)

References 13 publications

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“…[11][12][13] EDM, as a thermoelectric process, is an efficient surface-altering technique to process hard, temperature-resistant, and high-strength materials. 14 Repeated spark generation between tool and workpiece underneath the dielectric media is responsible for material removal in EDM. The process can be applied to electrically conductive hard-to-machine materials such as Ti alloys because the machinability is not affected by the material hardness.…”

Section: Introductionmentioning

confidence: 99%

On the machinability and properties of Ti–6Al–4V biomaterial with n-HAp powder–mixed ED machining

Bains¹,

Bahraminasab

Sidhu³

et al. 2019

Proc Inst Mech Eng H

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Nano-hydroxyapatite powder was used in electric discharge machining to modify the surface of Ti–6Al–4V medical alloy. Herein, electric discharge machining was performed, with and without powder-mixed flushing for evaluation of the material erosion rate and surface roughness. In addition to dielectric type, several process parameters including current, pulse-on duration, pulse-off duration, and electrode hole diameter were considered. The experiments were planned by Taguchi design technique and conducted to analyze the material erosion rate and surface roughness. After machining, scanning electron microscope, energy-dispersive X-ray spectrometry, and X-ray diffraction techniques were used to evaluate the surfaces of the samples. Furthermore, wear and corrosion tests were also carried out on the Ti alloy with modified surfaces. The influential factors were identified based on analysis of variance results. Current and dielectric type were the significant factors, both for the material erosion rate and surface roughness. The scanning electron microscope images of Ti–6Al–4V samples highlighted that the process parameters exhibited a vital influence on the topology and microstructure of machined surface. Furthermore, energy-dispersive X-ray spectrometry and X-ray diffraction analyses confirmed the presence of hydroxyapatite on Ti alloy surface after machining. Moreover, the results of wear and corrosion tests revealed lower wear and corrosion rates of the surface-treated workpiece with nano-hydroxyapatite.

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Section: Introductionmentioning

confidence: 99%

On the machinability and properties of Ti–6Al–4V biomaterial with n-HAp powder–mixed ED machining

Bains¹,

Bahraminasab

Sidhu³

et al. 2019

Proc Inst Mech Eng H

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“…The input processing parameters, magnetic field strength, pulse-on/off length, peak current, electrode variant, and workpiece were evaluated to determine their after-effects on the microhardness (MH) response and recast layer formation during Al–SiC composite machining. The experimental results indicate a 22% decline in surface microhardness and a thinner recast layer formation in the magnetic field coupled with higher spark energy [ 126 ]. Thus, a higher spark energy formed along with the magnetic field can decline the surface hardness.…”

Section: Relevant Studies On Pmedmmentioning

confidence: 99%

“…Thus, a higher spark energy formed along with the magnetic field can decline the surface hardness. Bains et al [ 126 ] studied the individual effect of machining parameters, namely, peak current, pulse on time, pulse off time, powder concentration, and magnetic field on material removal rate and tool wear rate. The effect of peak current on material removal rate and tool wear rate, followed by pulse on time, concentration of powder, and magnetic field was found to be dominant [ 127 ].…”

Section: Relevant Studies On Pmedmmentioning

confidence: 99%

Recent Advances and Perceptive Insights into Powder-Mixed Dielectric Fluid of EDM

et al. 2020

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Electrical discharge machining (EDM) is an advanced machining method which removes metal by a series of recurring electrical discharges between an electrode and a conductive workpiece, submerged in a dielectric fluid. Even though EDM techniques are widely used to cut hard materials, low efficiency and high tool wear remain remarkable challenges in this process. Various studies, such as mixing different powders to dielectric fluids, are progressing to improve their efficiency. This paper reviews advances in the powder-mixed EDM process. Furthermore, studies about various powders used for the process and its comparison are carried out. This review looks at the objectives of achieving a more efficient metal removal rate, reduction in tool wear, and improved surface quality of the powder-mixed EDM process. Moreover, this paper helps researchers select suitable powders which are exhibiting better results and identifying different aspects of powder-mixed dielectric fluid of EDM.

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“…The MRR increases with increase of Ip. When Ip is low, large portion of energy is use to vaporize the metal so that the MRR is less at low current [27,28]. MRR increase with Ip because at high current discharge energy is large.…”

Section: Mathematical Model and Parametric Effect On Mrrmentioning

confidence: 99%

Multi-response optimization of magnetic field assisted EDM through desirability function using response surface methodology

Kumar¹,

Sharma²

2020

Journal of the Mechanical Behavior of Materials

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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.

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Magnetic Field Assisted EDM: New Horizons for Improved Surface Properties

Cited by 31 publications

References 13 publications

On the machinability and properties of Ti–6Al–4V biomaterial with n-HAp powder–mixed ED machining

On the machinability and properties of Ti–6Al–4V biomaterial with n-HAp powder–mixed ED machining

Recent Advances and Perceptive Insights into Powder-Mixed Dielectric Fluid of EDM

Multi-response optimization of magnetic field assisted EDM through desirability function using response surface methodology

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