Assessment of operational feasibility of waste vegetable oil based bio-dielectric fluid for sustainable electric discharge machining (EDM)

Valaki, Janak B.; Rathod, Pravin P.

doi:10.1007/s00170-015-7169-0

Cited by 101 publications

(32 citation statements)

References 35 publications

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“…Many studies focused on dielectric fluids in terms of performance improvement and a reduction of the side effects on the process environment. Valaki and Rathod [74] explored the feasibility of using waste vegetable oil (WVO) as an alternative dielectric fluid. The study presented a comparison between WVO and other conventional dielectric fluids such as hydrocarbon oil and kerosene in terms of their effect on the EDM performance.…”

Section: Research On Dielectric Fluidmentioning

confidence: 99%

Principles and Characteristics of Different EDM Processes in Machining Tool and Die Steels

et al. 2020

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Electric discharge machining (EDM) is one of the most efficient manufacturing technologies used in highly accurate processing of all electrically conductive materials irrespective of their mechanical properties. It is a non-contact thermal energy process applied to a wide range of applications, such as in the aerospace, automotive, tools, molds and dies, and surgical implements, especially for the hard-to-cut materials with simple or complex shapes and geometries. Applications to molds, tools, and dies are among the large-scale initial applications of this process. Machining these items is especially difficult as they are made of hard-to-machine materials, they have very complex shapes of high accuracy, and their surface characteristics are sensitive to machining conditions. The review of this kind with an emphasis on tool and die materials is extremely useful to relevant professions, practitioners, and researchers. This review provides an overview of the studies related to EDM with regard to selection of the process, material, and operating parameters, the effect on responses, various process variants, and new techniques adopted to enhance process performance. This paper reviews research studies on the EDM of different grades of tool steel materials. This article (i) pans out the reported literature in a modular manner with a focus on experimental and theoretical studies aimed at improving process performance, including material removal rate, surface quality, and tool wear rate, among others, (ii) examines evaluation models and techniques used to determine process conditions, and (iii) discusses the developments in EDM and outlines the trends for future research. The conclusion section of the article carves out precise highlights and gaps from each section, thus making the article easy to navigate and extremely useful to the related research community.

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Section: Research On Dielectric Fluidmentioning

confidence: 99%

Principles and Characteristics of Different EDM Processes in Machining Tool and Die Steels

et al. 2020

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“…The maximum MRR has been reported as 53.33 mm 3 /min for jatropha and 29.21 mm 3 /min for kerosene, when 18 A current, 200 µs pulse-on time, 20 µs pulse-off time, and 50 V gap voltage were maintained. Similar types of results are also noticed when WVO, palm oil, canola, and sunflower were used as dielectrics [15,61,62]. Lately, Das et al [18] investigated the performance of neem oil as a dielectric to machine Ti-6Al-4V with copper electrode, where 4-16 A current, 20-60 V gap voltage, 50-250 µs of pulse-on time, and 10-50 µs of pulse-off time were maintained.…”

Section: Impact Of These Dielectrics On the Responsesmentioning

confidence: 60%

“…However, the application of water-oil emulsion, waste vegetable oils, glycol, etc. is also reported, which show satisfactory responses during the pilot runs [14,15]. However, the application of these alternative oils for industrial utilization has not been noticed so far.…”

Section: Recent Trends and Sustainabilitymentioning

confidence: 80%

“…Valaki et al [15] compared the impact of waste vegetable oil (WVO) with conventional kerosene to machine the plastic mold-steel with copper tool and observed significant reduction in TW and satisfactory MRR and SR when WVO was used. In this aspect, properties like oxygen content, flash point, viscosity, and density play a notable impact on the responses and should be considered during the dielectric selection.…”

Section: Vegetable Oils As Dielectricsmentioning

confidence: 99%

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Feasibility assessment of some alternative dielectric mediums for sustainable electrical discharge machining: a review work

Das

Paul

Doloi

2020

J Braz. Soc. Mech. Sci. Eng.

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Low removal rate, high power consumption, and dependency on conventional fuels (kerosene as a dielectric) are some premier issues that keep the sustainability index of EDM low, though it has huge acceptability and popularity mostly in aviation sectors and biomedical instrumentation to machine some extensively hard ferrous and nonferrous metal/metal alloys. Besides these, the thermal agitation inside the fusion/machining zone partially burns the dielectrics and tool-workpiece-metal, which evolve some oxides/monoxides. These evolved gases promote an unhygienic breathing atmosphere, which is very much harmful to the operator's health. Sometimes because of inadequate flushing pressure and velocity, carbon particles deposited inside the crater makes the spark unstable and releases carbon monoxide when the temperature exceeds its melting point. According to ISO 14000, every manufacturing process must be comprised of the sustainability criteria, which maintains a compromised balance between the economic, environmental, and social aspects, including the issue of the operator's health. But in real practices, it is very tough to maintain a stoichiometric balance between all these constraints. The article intensely focuses on the issue of emergence of gases during machining and tries to promote the utility of some alternative vegetable oil-based dielectrics, which are experimentally justified as a potent alternative of conventional kerosene. Apart from these, it includes some comparative talks on dielectric nature and their impacts on the responses and surface properties. Finally, this article highlights some compromise solutions which are probably capable of mitigating the hurdles to some extent, so that the sustainable machining can be encouraged in real sense.

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“…Jatropha oil is nonedible and hence does not affect food chain sustainability. In our earlier study, [24] we have reported a qualitative assessment of suitability of vegetable oil based bio oils as dielectric for EDM. Authors, in this research paper, have proposed two vegetable oil based biodielectric fluids, Jatropha oil (BD1) and Waste vegetable oil (BD2) as green dielectrics for EDM process.…”

Section: Introductionmentioning

confidence: 99%

Investigating Feasibility Through Performance Analysis of Green Dielectrics for Sustainable Electric Discharge Machining

Valaki

Rathod

2015

Materials and Manufacturing Processes

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This work represents a feasibility study for the newly proposed vegetable oil based green dielectric fluids, biodielectric1 (BD1) and biodielectric2 (BD2) for Electric discharge machining (EDM). Comparative analyses for BD1, BD2 and kerosene have been studied to assess the performance in terms of material removal Rate (MRR), electrode wear rate (EWR) and relative wear ratio (RWR) for P20+ cold worked plastic injection mould steel using electrolytic grade copper electrode. Current, Gap voltage, Pulse on time (T on ) andPulse off time (T off ), have been chosen as input parameters and one variable at a time approach has been used for designing experimental plan for investigating feasibility of the newly suggested fluids. The results obtained show that performance of the newly suggested biodielectrics BD1 and BD2 are better than commercially used hydrocarbon based dielectric i.e. Kerosene, for MRR and RWR. ANOVA results indicated that current is the most influencing parameter for MRR and EWR, while T on is the most significant parameter for RWR. Under the influence of current, BD1 and BD2 produced 38% and Downloaded by [New York University] at 00:10 02 August 2015 2165 % improvement in MRR respectively. Moreover, BD1 and BD2 resulted 30% higher and 7% lower RWR, respectively under the influence of T on.

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Assessment of operational feasibility of waste vegetable oil based bio-dielectric fluid for sustainable electric discharge machining (EDM)

Cited by 101 publications

References 35 publications

Principles and Characteristics of Different EDM Processes in Machining Tool and Die Steels

Principles and Characteristics of Different EDM Processes in Machining Tool and Die Steels

Feasibility assessment of some alternative dielectric mediums for sustainable electrical discharge machining: a review work

Investigating Feasibility Through Performance Analysis of Green Dielectrics for Sustainable Electric Discharge Machining

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