Powder mixed electric discharge machining – A review

Dewan, P. R.; Kundu, Pranab Kumar; Phipon, Ruben

doi:10.1063/5.0025268

Cited by 20 publications

(2 citation statements)

References 72 publications

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“…The workpiece’s perfect surface smoothness is the result of this consistent sparking [ 22 ]. Micro/nano powder in the dielectric fluid causes agglomeration that obstructs EDM machining and spark passage [ 23 , 24 ]. EDM agglomeration reduces sparking, changing output results.…”

Section: Introductionmentioning

confidence: 99%

Enhancing EDM Machining Precision through Deep Cryogenically Treated Electrodes and ANN Modelling Approach

Ishfaq,

Sana,

Waseem

et al. 2023

Micromachines

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The critical applications of difficult-to-machine Inconel 617 (IN617) compel the process to be accurate enough that the requirement of tight tolerances can be met. Electric discharge machining (EDM) is commonly engaged in its machining. However, the intrinsic issue of over/undercut in EDM complicates the achievement of accurately machined profiles. Therefore, the proficiency of deep cryogenically treated (DCT) copper (Cu) and brass electrodes under modified dielectrics has been thoroughly investigated to address the issue. A complete factorial design was implemented to machine a 300 μm deep impression on IN617. The machining ability of DCT electrodes averagely gave better dimensional accuracy as compared to non-DCT electrodes by 13.5% in various modified dielectric mediums. The performance of DCT brass is 29.7% better overall compared to the average value of overcut (OC) given by DCT electrodes. Among the non-treated (NT) electrodes, the performance of Cu stands out when employing a Kerosene-Span-20 modified dielectric. In comparison to Kerosene-Tween-80, the value of OC is 33.3% less if Kerosene-Span-20 is used as a dielectric against the aforementioned NT electrode. Finally, OC’s nonlinear and complex phenomena are effectively modeled by an artificial neural network (ANN) with good prediction accuracy, thereby eliminating the need for experiments.

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Section: Introductionmentioning

confidence: 99%

Enhancing EDM Machining Precision through Deep Cryogenically Treated Electrodes and ANN Modelling Approach

Ishfaq,

Sana,

Waseem

et al. 2023

Micromachines

View full text Add to dashboard Cite

show abstract

“…This uniform sparking contributes to the workpiece's smooth surface finish [32]. However, the introduction of micro/nano-powder to the dielectric medium experienced a serious difficulty of agglomeration, which curtailed sparking through the dielectric medium and hence limited EDM performance [33,34]. The creation of agglomeration during EDM reduces sparking, thereby affecting output results.…”

Section: Introductionmentioning

confidence: 99%

Evaluating Surface Quality of Inconel 617 by Employing Deep Cryogenically Treated Electrodes in Surfactant-Added Dielectrics of Transformer Oil

Ishfaq

Sana

Mahmood

et al. 2023

Metals

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Over the past few decades, better surface quality has remained of great interest to researchers. It deteriorates the fatigue life of the workpiece. The criticality arises when a material of greater strength is selected to work in high-temperature areas such as nickel (Ni)-based superalloys, categorically Inconel 617. Conventional machining operations are not the best choice for the machining of this alloy because of its low density and greater strength. Therefore, electric discharge machining (EDM) is generally engaged. Still, there is a great necessity to make a more reliable surface using EDM, which performs better even in harsh working areas. Therefore, this study examined the potential of deep-cryogenically treated electrodes under the modified dielectrics of transformer oil in the said context, which has not been discussed so far. A set of 30 experiments was performed, designed using the full factorial technique. Deep-cryogenically treated electrodes provided better surface quality in comparison to the non-treated electrodes. Amongst the deep-cryogenically treated electrodes, brass performed outstandingly and provided the lowest value of surface roughness (SR), 6.65 µm, in the modified dielectric of transformer oil with Span 80. The surface finish of deep-cryogenically treated brass is 28.72% better compared to the average value of the overall deep-cryogenically treated electrodes. The lowest value of SR (8.35 µm) was gained by engaging a non-cryogenically treated Cu electrode with a T-20–transformer oil-modified dielectric. The said value of SR is 17.7% better than the highest value of SR achieved in the case of S-80–transformer oil with a non-cryogenically treated Cu electrode.

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Experimental Analysis of Aluminum PMEDM of Nimonic C-263

Dewan,

Kundu

2024

Lecture Notes in Mechanical Engineering

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Powder mixed electric discharge machining – A review

Cited by 20 publications

References 72 publications

Enhancing EDM Machining Precision through Deep Cryogenically Treated Electrodes and ANN Modelling Approach

Enhancing EDM Machining Precision through Deep Cryogenically Treated Electrodes and ANN Modelling Approach

Evaluating Surface Quality of Inconel 617 by Employing Deep Cryogenically Treated Electrodes in Surfactant-Added Dielectrics of Transformer Oil

Experimental Analysis of Aluminum PMEDM of Nimonic C-263

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