Electrical discharge abrasive drilling of hard materials using a metal matrix composite electrode

Shu, Kuen Ming; Shih, Hung Rung; Tu, G. C.

doi:10.1007/s00170-005-2571-7

Cited by 11 publications

(8 citation statements)

References 9 publications

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Section: Review Of Ehmpsmentioning

confidence: 99%

“…Wheel speed was identified as most significant factor affecting the process performances in face EDDG. Shu et al 91 found that the MRR during electric discharge abrasive drilling of mold steel using MMC electrode is three to seven times more than pure EDM. Ghosh 59 and Basak and Ghosh 92 investigated the effect of electrolyte concentration on the MRR during ECDM of glass and found that with increase in electrolyte concentration from 20% to 40%, the MRR of the glass increases by five times (Figure 24).…”

Section: Experimental Studiesmentioning

confidence: 99%

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Electrical discharge machining–based hybrid machining processes: A review

Shrivastava¹,

Dubey

2013

Proceedings of the Institution of Mechanical Engineers, Part B:

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Electrical discharge machining is one of the widely used noncontact-type advanced machining processes in which material removal takes place due to melting and vaporization by thermal energy of electric sparks. Electrical discharge machining has the capability of machining difficult-to-cut materials such as superalloys, advanced ceramics, and composites with complex shapes at both macro- and micro-levels. But its application is limited to electrically conductive materials. Other limitations include low material removal rate, high tool wear rate, recast layer formation, and geometrical inaccuracy in the form of taper and overcut. To overcome such limitations, the mechanism of electrical discharge machining has been combined with the mechanism of one or more other machining/physical/chemical processes. The mechanism of two constituent processes may be applied simultaneously or sequentially to constitute the hybrid machining process. It has been found that the performance of hybrid machining processes is better than the constituent processes. This article presents the comprehensive review of the research work carried out so far in the area of electrical discharge machining–based hybrid machining processes. It discusses about the experimental and theoretical studies of electrical discharge machining–based hybrid machining processes to elucidate the effects of various control factors or input parameters on process performances. This article includes modeling and optimization studies and discusses the future trend of the research work in this area.

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Section: Review Of Ehmpsmentioning

confidence: 99%

Section: Experimental Studiesmentioning

confidence: 99%

Electrical discharge machining–based hybrid machining processes: A review

Shrivastava¹,

Dubey

2013

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…While comparing the MRR obtained during the EDAD of mold steel HPM 50 using rotating composite electrodes and pure electrode, it was found that rotating composite electrode shows lower MRR but pure electrode is capable to produce more MRR. Overall, the EDAD showed better MRR and SR than EDM [14]. Comparative performance of multispark EDM and conventional EDM were also investigated while considering MRR,TWR, SR along with energy consumption.…”

Section: Methods Of Improving Materials Removal Ratementioning

confidence: 99%

A review on optimization of machining performances and recent developments in electro discharge machining

Nahak

Gupta

2019

Manufacturing Rev.

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Electro discharge machining (EDM) is a popular unconventional machining process widely employed in die-making industries. Careful selection of process parameters such as pulse current, voltage, on and off time, etc. is essential for machining of hard and conductive materials using EDM. Previous researchers working in the area of EDM have extensively analyzed the machining performance through experimental study, modeling, and simulation and also by theoretical analysis. This article discusses the significant summary of the work performed by earlier researchers through a detailed literature survey. Relevant literature on EDM and impact of process parameters on performance measures such as surface quality, tool wear rate and material removal rate are reviewed. The challenge and limitation of EDM process are also highlighted in this article. It is observed that optimization of process parameters is essentially required for effective and economical machining. So, this article addresses the various issues related to EDM and also provides brief insight into some of the current generation applications of EDM process explored in various industries.

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“…11,12 The EDDG has been used in different modes of operation such as surface grinding and cut-off grinding for machining of hard conductive materials and found improved response of material removal rate (MRR) and R a . 13,14 By making use of similar concept, Shu et al 15 drilled holes in mold steel HPM50 and tungsten carbide P20 materials and found improved value of R a . They used rotating tool electrode made of fine copper-bonded SiC abrasive in EDM and termed it as electrical discharge abrasive drilling (EDAD).…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on electrical discharge diamond drilling of nickel-based superalloy aerospace material

Yadav

Yadava

2015

Proceedings of the Institution of Mechanical Engineers, Part B:

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In this article, the authors have attempted to use altogether a new hybrid machining process for making the holes in nickel-based superalloy (nimonic alloy) aerospace material and termed it as electro-discharge diamond drilling process. To perform this experimental study, they self-designed and developed a setup which is capable to hold as well as rotate the metal-bonded diamond abrasive tool electrode. They installed this setup on a ZNC 320 sinking electrical discharge machining machine and conducted the experimental study. The effects of input parameters such as gap current, pulse-on time, duty factor and tool rotation on the response parameters such as average surface roughness (R a ) and average circularity (C a ) of the drilled hole have been studied. It is observed that electro-discharge diamond drilling process has substantive effects on the improvement of R a as well as on C a in comparison to the hole made by stationary electrode electrical discharge machining (die-sinking electrical discharge machining) process. The photographs and micrographs of few selected workpieces were taken by metallurgical microscope and scanning electron microscope, respectively, which commensurate with the findings of the research study. KeywordsAverage circularity (C a ), average surface roughness (R a ), electrical discharge diamond drilling, electrical discharge machining, hybrid machining process Date

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Electrical discharge abrasive drilling of hard materials using a metal matrix composite electrode

Cited by 11 publications

References 9 publications

Electrical discharge machining–based hybrid machining processes: A review

Electrical discharge machining–based hybrid machining processes: A review

A review on optimization of machining performances and recent developments in electro discharge machining

Experimental investigation on electrical discharge diamond drilling of nickel-based superalloy aerospace material

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