The Performance of RBD Palm Oil Dielectric Fluid in Comparison with Kerosene in Electrical Discharge Machining (EDM) Process

Supawi, Aiman; Ahmad, Said; Joharudin, Nurul Farahin Mohd; Idhan, Nuraishah Nadhirah Ahmad

doi:10.1007/978-981-16-0866-7_86

Cited by 5 publications

(5 citation statements)

References 8 publications

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“…In electrical discharge machining, researchers have experimented with a variety of vegetable oils as dielectric fluids. Palm oil, soybean oil, sunflower oil, waste vegetable oil, canola oil, blended used vegetable oil, and jatropha oil are some of the vegetable oils that have been tested [12][13][14][15]. The fruit of the palm tree, also known as the mesocarp, is used to make refined bleached deodorized (RBD) palm oil.…”

Section: Introductionmentioning

confidence: 99%

Electrode Wear Rate On Electrical Discharge Machining of Titanium Alloys (Ti-6Al-4V) At Different Peak Current and Pulse Duration by Using Modified RBD Palm Oil as Dielectric Fluids

Supawi¹,

Ahmad²,

Talib³

et al. 2022

IJIE

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Electrical Discharge Machining (EDM) is a machining process in terms of thermoelectric that removes metal by discharging a discrete sparks series of the metal and workpiece. The cutting tool in EDM has used an electric spark to cut the workpiece of sample and produce the finished part to the demanded shape. Vegetable oil as the dielectric fluid is one way to ensure EDM's long-term viability because it is environmentally friendly and biodegradable. The main objective of this preliminary study is to compare the uses of modified bio-degradable and conventional dielectric fluid performance for a titanium alloy (Ti-6Al-4V) with a copper (Cu) electrode using a sustainable EDM process in terms of electrode wear rate (EWR). To achieve a concentration of viscosity rate as kerosene fluids, RBD palm oil has been transesterified. The effect of EWR of kerosene and modified RBD palm oil as dielectric fluids was investigated in this paper for response variables of pulse duration (ton) of 50, 100, and 150μs, and peak current (Ip) of 6, 9, and 12A. The morphology of the copper electrode, as well as the migration of workpiece material elements to the tool electrode, were studied by using scanning electron microscopy (SEM). The lowest EWR was recorded at Ip=6A with ton=150μs, which is 0.0416mm3/min and 0.0432mm3/min, and the highest EWR was recorded at Ip=12A with ton=50μs, which is 0.1725mm3/min and 0.2324mm3/min, for modified RBD palm oil compared to kerosene, respectively. The EWR rises as thepeak current rises, but it decreases as the pulse duration increases. The uses of modified RBD palm oil shows slightly different results compared to kerosene.

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Section: Introductionmentioning

confidence: 99%

Electrode Wear Rate On Electrical Discharge Machining of Titanium Alloys (Ti-6Al-4V) At Different Peak Current and Pulse Duration by Using Modified RBD Palm Oil as Dielectric Fluids

Supawi¹,

Ahmad²,

Talib³

et al. 2022

IJIE

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“…When composite tool was used, remnants fall on the edge of the crater during cooling time after the washing out of molten metal from the machining gap, resulting in rough surface formation. 41 When machined with USODM, owing to its lower dielectric breakdown machined cycle occurred at faster rate. In this case specimens machined with composite electrode exhibit smoother surface.…”

Section: Resultsmentioning

confidence: 99%

Electric Discharge Machining of Inconel 718 Under a Distinct Dielectric Medium

Somu¹,

Ranjith²

2022

ECS J. Solid State Sci. Technol.

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In this research, an attempt was made to machine the Inconel 718 alloy under varied dielectric media with the objective of generating wealth from waste and establishing a green environment. Experiments were conducted to analyze the influence of input variables under EDM oil, pure sunflower oil, used sunflower oil, palm oil, and ground nut oil insulating media. Five different tools, copper, brass, aluminium, copper–graphite, and aluminum–graphite, were utilized for investigation and experimental runs were designed using Taguchi mixed orthogonal array. The results revealed that the characteristics of the dielectric fluid influences the spark generation and machined cycle time. The findings show that dielectric fluid with a high density facilitates flushing, low specific heating distributes heat uniformly, and low carbon content eliminates black spots. An electrode with low thermal conductivity dissipates more heat and low latent heat of fusion erodes excessively. Micro pits, globules, angled and clouded blobs, black spots, material dunes and redeposited material are the various features observed on the machined surface texture.

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“…In EDM, it refers to the amount of power used. The current increases during each pulse ontime until it reaches a current level, which is expressed as the peak current [8][9][10]. All of these parameters are even more important in EDM since the machined cavity is a mirror image of the tool electrode, and excessive wear will reduce machining precision [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

The Investigation of Material Removal Rate on Electrical Discharge Machining of Titanium Alloys (Ti-6Al-4V) at Different Peak Currents and Pulse Durations by Using RBD Palm Oil and Kerosene as Dielectric Fluids

Said Ahmad,

Aiman Supawi,

Norfazillah Talib

et al. 2024

ARAM

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The type of dielectric fluid is the most significant component that might affect the machining performance of EDM such as material removal, tool wear, and electrode surface roughness. However, the most serious of these issues is the inability to comply with health and environmental rules when the conventional dielectric was harmful to the surrounding ecosystem. One approach to ensure the long-term sustainability of EDM is to use vegetable oil as the dielectric fluid as it is environmentally friendly and biodegradable. To satisfy industrial objectives, the machining industry must ensure that the maximum material removal rate (MRR) can be achieved. This paper investigated the effect of kerosene and refined, bleached, and deodorised (RBD) palm oil as dielectric fluids with different peak currents (6, 9, and 12A) and pulse duration (50, 100 and 150µs) settings on MRR of Titanium alloy. Kerosene was used as a benchmark to compare the performance of the EDM process. The implementation of RBD palm oil recorded the lowest MRR at the lowest peak current of 6A with the lowest pulse duration of 50µs, which is 1.1260mm3/min. In contrast, the highest MRR with a value of 12.1323mm3/min was recorded at the highest peak current of 12A with a pulse duration of 150µs. Overall, RBD palm oil shows an excellent MRR performance for substituting hydrocarbon or mineral oil as a dielectric fluid in EDM applications, improving cost, time, and production efficiency.

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The Performance of RBD Palm Oil Dielectric Fluid in Comparison with Kerosene in Electrical Discharge Machining (EDM) Process

Cited by 5 publications

References 8 publications

Electrode Wear Rate On Electrical Discharge Machining of Titanium Alloys (Ti-6Al-4V) At Different Peak Current and Pulse Duration by Using Modified RBD Palm Oil as Dielectric Fluids

Electrode Wear Rate On Electrical Discharge Machining of Titanium Alloys (Ti-6Al-4V) At Different Peak Current and Pulse Duration by Using Modified RBD Palm Oil as Dielectric Fluids

Electric Discharge Machining of Inconel 718 Under a Distinct Dielectric Medium

The Investigation of Material Removal Rate on Electrical Discharge Machining of Titanium Alloys (Ti-6Al-4V) at Different Peak Currents and Pulse Durations by Using RBD Palm Oil and Kerosene as Dielectric Fluids

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