Physical and electrical characteristics of EDM debris

Murray, James W.; Sun, Jin; Patil, Dhiraj V.; Wood, Tiffany; Clare, Adam T.

doi:10.1016/j.jmatprotec.2015.09.019

Cited by 64 publications

(35 citation statements)

References 11 publications

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“…particle of material is removed from the electrodes' material in the form of debris [101]. In most cases, the electrodes are immersed completely in the dielectric fluid, which is normally in the form of mineral oil or deionized water [102,103].…”

Section: Overview Of Electrical Discharge Machiningmentioning

confidence: 99%

A Review of Additive Mixed-Electric Discharge Machining: Current Status and Future Perspectives for Surface Modification of Biomedical Implants

Aliyu

Rani

Ginta

et al. 2017

Advances in Materials Science and Engineering

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Surface treatment remained a key solution to numerous problems of synthetic hard tissues. The basic methods of implant surface modification include various physical and chemical deposition techniques. However, most of these techniques have several drawbacks such as excessive cost and surface cracks and require very high sintering temperature. Additive mixed-electric discharge machining (AM-EDM) is an emerging technology which simultaneously acts as a machining and surface modification technique. Aside from the mere molds, dies, and tool fabrication, AM-EDM is materializing to finishing of automobiles and aerospace, nuclear, and biomedical components, through the concept of material migrations. The mechanism of material transfer by AM-EDM resembles electrophoretic deposition, whereby the additives in the AM-EDM dielectric fluids are melted and migrate to the machined surface, forming a mirror-like finishing characterized by extremely hard, nanostructured, and nanoporous layers. These layers promote the bone in-growth and strengthen the cell adhesion. Implant shaping and surface treatment through AM-EDM are becoming a key research focus in recent years. This paper reports and summarizes the current advancement of AM-EDM as a potential tool for orthopedic and dental implant fabrication. Towards the end of this paper, the current challenges and future research trends are highlighted.

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Section: Overview Of Electrical Discharge Machiningmentioning

confidence: 99%

A Review of Additive Mixed-Electric Discharge Machining: Current Status and Future Perspectives for Surface Modification of Biomedical Implants

Aliyu

Rani

Ginta

et al. 2017

Advances in Materials Science and Engineering

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show abstract

“…The additive powders ranging from Silicon to Graphite powder were found to be enhancing the material removal rate in PMEDM process [8] where these artificial contaminations found to be aiding the breakdown characteristics of the dielectric fluid [9]. Murray et al observed that the physical and the electrical properties of the gap debris also played a role in altering the breakdown strength of the dielectric fluid [10].…”

Section: Introductionmentioning

confidence: 99%

Influence of thermo-electrical property of materials on Powder Mixed Electrical Discharge Machining

Jeavudeen¹,

Siddhi²,

Murugan³

2019

FME Transactions

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Powder Mixed Electrical Discharge Machining (PMEDM) is considered as one of the viable methods to machine the materials which are hard and tough but with appreciable thermo-electrical properties. In PMEDM, it has been established that machinability is enhanced by adding additives in the form of fine powders in the spark gap of EDM process. In this investigation, the role of the thermo-electrical properties of workpiece on PMEDM process has been studied. Materials with distinct thermoelectric property, namely Mild Steel and Aluminium are taken as workpiece with Alumina as additive powder for the PMEDM process. Experiments have been conducted with Taguchi L9 Orthogonal Array (OA) with Material Removal Rate (MRR) and Tool Wear Index (TWI) as responses. Gap current, duty cycle and flow rate of powder mixed dielectric liquid have been taken as process parameters at 3 levels with circular copper rod of 12 mm diameter as tool electrode. Determination of the influence of properties of the workpiece on the machinability has been performed using a custom made PMEDM setup. ANOVA and main effect plot of data means for the aforementioned conditions have been analysed. The results are noteworthy with significant influence of the properties of the workpiece on the machinability of PMEDM process.

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“…Kaneko, T. and Onodera, T. [2] carried out a study on fuzzy control in order to maintain the stability of the EDM process. The characteristics of EDM debris were understood by Murray, J. W., et al [3]. Thiyagarajan, S., et al [4] introduced an experimental research on the influences of three different work-piece materials on the aerosol emission rate and the material removal rate.…”

Section: Introductionmentioning

confidence: 99%

A Study on Modelling Surface Finish in Electrical Discharge Machining Tablet Shape Punches Using Response Surface Methodology

Hưng¹,

Hoang²,

Pi³

2017

JESE-B

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This paper introduces a study on modelling surface finish in EDM (Electrical Discharge Machining) of tablet shape punches when using copper as electrode material. In this study, 27 experiments were performed based on BBD (Box-Behnken Design) and the work-piece material was 9CrSi steel. The input process parameters were the current, the pulse on time, the pulse off time and the voltage. The effects of the input parameters on the surface finish were evaluated by analysing variance. Besides, from the results of the experiments, a regression equation for determining the surface roughness is introduced. Also, the optimum input parameter values were found in order to get the minimum surface roughness.

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Physical and electrical characteristics of EDM debris

Cited by 64 publications

References 11 publications

A Review of Additive Mixed-Electric Discharge Machining: Current Status and Future Perspectives for Surface Modification of Biomedical Implants

A Review of Additive Mixed-Electric Discharge Machining: Current Status and Future Perspectives for Surface Modification of Biomedical Implants

Influence of thermo-electrical property of materials on Powder Mixed Electrical Discharge Machining

A Study on Modelling Surface Finish in Electrical Discharge Machining Tablet Shape Punches Using Response Surface Methodology

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