Influence of selected groups of additives on breakdown in EDM sinking

Rehbein, W.; Schulze, H.‐P.; Mecke, K.; Wollenberg, G.; Storr, M.

doi:10.1016/j.jmatprotec.2004.02.029

Cited by 48 publications

(20 citation statements)

References 4 publications

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“…The hardness of the modified surface became higher with increase in pulse duration and powder concentration (Okada et al, 2000). A distinct influence of the addition of aromatic hydrocarbons to the dielectric fluid on the ignition and breakdown phase of single discharges has also been reported by Rehbein et al (2004). However, it is observed during review of literature that most of the research works using powdermixed dielectric focus on improving the process parameters such as material removal rate (MRR), TWR and surface roughness.…”

Section: Surface Modification By Powder-mixed Dielectricmentioning

confidence: 95%

Surface modification by electrical discharge machining: A review

Kumar

Singh

et al. 2009

Journal of Materials Processing Technology

424

165

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Section: Surface Modification By Powder-mixed Dielectricmentioning

confidence: 95%

Surface modification by electrical discharge machining: A review

Kumar

Singh

et al. 2009

Journal of Materials Processing Technology

424

165

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“…These are solid additives such as metallic powders, liquid additives like surfactant, urea solution, and calcium aqueous solution, or gaseous additives like nitrogen and oxygen gasses. The additives mixed with the dielectric fluid not only stabilize the EDM process but also improve the EDM efficiency and quality of the machined surface [138,139]. The EDM performance, tool-electrode life, and quality of the machined component depend greatly on the additive type, size, concentration, and properties [140,141].…”

Section: Additive Mixed-electrical Dischargementioning

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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“…Because of the weak polarity of the bondings and their symmetric structure all alkanes are practically nonpolar and they are not able to arrange themselves in an electrical field. In some previous tests aromatic compounds clearly showed the highest positive influence on the EDM process [2]. A new testing series was created to develop a thesis of the effect of additives on the pre-ignition and breakdown process.…”

Section: Working Fluid and Additivesmentioning

confidence: 99%

Influence of liquid additives in electro-erosive micromachining (EDMM)

2009

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Studies at the Otto-von-Guericke-University of Magdeburg in cooperation with oelheld GmbH in Stuttgart have analyzed the influence of selected additives in dielectric working fluids for electrical discharge machining (EDM) on the ignition and breakdown phases of the plasma channel. The electrical breakdown in the hydrocarbon base fluid without additives is determined by the formation of the external Helmholtz-Layer as an interface between electrode surface and dielectric medium. The influence of the different additive molecules on the formation of the HelmholtzLayer and on the ignition and discharge mechanism will be discussed.

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Influence of selected groups of additives on breakdown in EDM sinking

Cited by 48 publications

References 4 publications

Surface modification by electrical discharge machining: A review

Surface modification by electrical discharge machining: A review

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

Influence of liquid additives in electro-erosive micromachining (EDMM)

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