Comparative studies of ecm, edm and ecam

Crichton, I.M.; McGeough, J. A.; Munro, W.; White, C.L.

doi:10.1016/0141-6359(81)90007-6

Cited by 38 publications

(16 citation statements)

References 4 publications

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“…Early in the 1980s, Meshcheriakov found that the hydrodynamic pressure of the working fluid in the gap influenced the physical features of the arc and proposed Arc Dimensional Machining [2]. Afterwards, electro contact discharge machining [3], electrochemical arc machining [4] and high speed electro-erosion milling [5] were proposed to utilize arc for material removal. Wang and Liu et al achieved a high MRR of 15,062 mm 3 /min (current 920 A) by using compound power with high current density to machine Inconel718 with negative polarity [6].…”

Section: Introductionmentioning

confidence: 99%

Influence of polarity on the performance of Blasting Erosion Arc Machining

Zhao

et al. 2015

CIRP Annals

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Section: Introductionmentioning

confidence: 99%

Influence of polarity on the performance of Blasting Erosion Arc Machining

Zhao

et al. 2015

CIRP Annals

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“…Another possible reason, which is responsible for the formation of the smallest particles in the case of spark erosion, can be explosive boiling of overheated molten jets followed by their explosion with formation submicron particles. This phenomenon can happen due to a rapid drop of pressure from 10 6 ÷ 10 10 Pa to atmospheric pressure [ 10 , 35 , 36 ] when the discharge is broken and the gaseous bubble around the arc column collapses. One of the results of such scenario is blowing-out the hollow particles from the molten droplets oversaturated by a coolant gas [to be published].…”

Section: Resultsmentioning

confidence: 99%

Nanoparticles formation mechanisms through the spark erosion of alloys in cryogenic liquids

Monastyrsky¹

2015

Nanoscale Res Lett

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Mechanisms of the formation of nanoparticles of some B2 shape memory intermetallic compounds, glass-forming Zr-based alloy, and pure Ti obtained by spark erosion method in liquid nitrogen and argon are considered. One of peculiarity is a foam-like structure, which covers the surface of micron-sized particles that appear during spark erosion. Such morphology is related to the nanosized particles gathered in agglomerates. Detailed examination of those particles allows proposed several mechanisms of their formation. The mechanisms explains two kinds of nanosized particles: particles of several tens and even hundreds of nanometers are formed due to explosion of molten droplets while the smaller particles having in turn a different structure and morphology are formed as a result of condensation of evaporated constituents under different conditions. The latter have the composition usually different from the target composition while the composition of the former is very close to the target (master alloy) composition.

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“…The machining speed of EDM is low; therefore, the electro-arc machining (EAM) technique has been proposed and researched recently. In contrast with EDM, which uses sparks with a duration within 1000 µs, 5 EAM adopts arcs with a duration, that is, usually longer than 100 µs to erode materials. 6 Essentially, to distinguish between EDM and EAM, the discharge current should also be considered.…”

Section: Introductionmentioning

confidence: 99%

“…The arcs are more stable and higher in energy density than the sparks; this stability and density promotes the machining speed of EAM. 4,5 The commonly used EAM processes, including arc dimensional machining (ADM), electro-melting-explosion (EME), short electrical arc machining (SEAM), blasting erosion arc machining (BEAM) and ultra-high-speed combined machining of EDM and arc machining, are similar to EDM in that they all adopt flushing to overcome discharge concentrations and to break arcs. The commonly used EDM and EAM processes and their flushing methods are listed in Table 1.…”

Section: Introductionmentioning

confidence: 99%

Effects of flushing on electrical discharge machining and electro-arc machining

Zhang

Dou

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part B:

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Both electrical discharge machining and electro-arc machining are non-contact machining processes, which use high temperatures produced by discharges to erode material. The gap between the tool and the workpiece is usually filled with liquid dielectric medium. Moreover, liquid flushing is commonly used in the machining processes of electrical discharge machining and electro-arc machining. Much research has been conducted to study the effects of flushing on these processes. However, there has been little study on the mechanism of the flushing procedure for these machining processes. In this article, electrical discharge machining and electro-arc machining experiments adopting different polarities and flow rates were designed and implemented. The plasma tunnel and crater morphology were studied. It was found that the plasma tunnel was lengthened, compressed and broken by flushing in the electro-arc machining experiment; however, the electrical discharge machining experiment did not produce this result. Similarly, tailing discharge craters and polarity effects caused by flushing were observed in the electro-arc machining experiment, while no such performances caused by flushing were found in the electrical discharge machining experiment. The flushing in electro-arc machining was able to reduce the material removal rate, tool wear rate and surface roughness simultaneously, while the effects of flushing in electrical discharge machining were inconspicuous. Moreover, the characteristics of the plasma tunnels of the electro-arc machining experiment were similar to those of arcs, which were different from those of the electrical discharge machining experiment. These results help to verify that the electro-arc machining process adopts arcs, while the electrical discharge machining process adopts sparks, during their respective material removal processes.

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Comparative studies of ecm, edm and ecam

Cited by 38 publications

References 4 publications

Influence of polarity on the performance of Blasting Erosion Arc Machining

Influence of polarity on the performance of Blasting Erosion Arc Machining

Nanoparticles formation mechanisms through the spark erosion of alloys in cryogenic liquids

Effects of flushing on electrical discharge machining and electro-arc machining

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