Surface Modification of Titanium using EDM Process.

Tsukahara, Hidekazu; Minami, Hisashi; Masui, Kiyonori; Demizu, Kei; Sone, Takumi

doi:10.2526/jseme.33.74_9

Cited by 11 publications

(8 citation statements)

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“…They observed significant changes in the chemical composition of machined surface due to migration of material from the tool electrode. Tsukahara and Sone (2000) carried out surface hardening of titanium using EDM process and obtained a crack less layer of titanium carbide with relatively short pulse duration at low peak current range under negative electrode polarity. The EDMed surface indicated various effective improvements such as hardness, tribological properties and corrosion resistance.…”

Section: Surface Modification By Conventional Electrode Materialsmentioning

confidence: 99%

Surface modification by electrical discharge machining: A review

Kumar

Singh

et al. 2009

Journal of Materials Processing Technology

423

165

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Section: Surface Modification By Conventional Electrode Materialsmentioning

confidence: 99%

Surface modification by electrical discharge machining: A review

Kumar

Singh

et al. 2009

Journal of Materials Processing Technology

423

165

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“…17–19 The main points for the mechanism of the breakdown discharge theories in liquid medium including: the electron discharge in gas medium, the bubble discharge, and the breakdown discharge of impurities. 20,21 The misted deionized water was first used in 2006 as discharge medium for the correlational research. 22 The liquid-gas-powder (particles) mixture was used as dielectric in near-dry powder-mixed medium.…”

Section: Introductionmentioning

confidence: 99%

Research on discharge characteristics of working mediums of electric discharge machining

Liu

Zhao

2020

Proceedings of the Institution of Mechanical Engineers, Part B:

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Successful surface modification can be obtained by Electrical Discharge Machining (EDM). In this work the discharge characteristics in misted deionized water and near-dry powder-mixed medium was studied systematically, as well as the microstructure and properties of electrical discharge strengthened layers on TC4 alloy. It indicates that the breakdown voltage of EDM in misted deionized water medium has been reduced to about 1/3 than in air medium. In near-dry powder-mixed medium, it is reduced to about 1/9, because the discharge gap is much larger than that of other mediums. In other words, a stable discharge can be obtained by larger discharge gaps and lower pulse energy than traditional EDM surface strengthening method, which leads to more stable discharge process. Experimental researches show that dense and sound combination with matrix like, multiphase hybrid intensification and chrysanthemum petal-like microstructure of strengthened layers can be observed in the near-dry powder-mixed medium. Meanwhile, it is found that the microhardness of the strengthened layer is up to about 1200 HV, which is four times higher than the base material.

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“…In general, the use of PM tool electrodes allows higher discharge energies to be used than with suspended powders, thereby producing thicker recast layers and increased susceptibility to microcracking. The adhesive strength, wear/corrosion resistance and tribological properties of EDM alloyed layers have been reported by a number of authors [6,12,[13][14][15]. Although by no means comprehensive, the data are in general positive with reports of increased corrosion resistance, lower coefficient of friction, etc.…”

Section: Introductionmentioning

confidence: 72%

“…These can involve the use of metal powders suspended in the dielectric fluid [1][2][3] or non-standard tool electrodes principally comprising either partially sintered hardmetals (solid die sink electrodes) or wires/tubes/brushes [4][5][6][7][8][9] (see Fig. 1a for a schematic of a die sink arrangement).…”

Section: Introductionmentioning

confidence: 99%