Performance Analysis of Vegetable Oil as Dielectric Fluid in Electric Discharge Machining Process of Inconel 800

Abstract

Electric discharge machining (EDM) is a spark erosion process widely used to machine difficult-to-cut material by conventional machining method. The major elements of EDM process are work piece, electrode and dielectric fluid. In this work, an attempt is made to investigate vegetable oil as dielectric fluid and their process performance for machining of Inconel 800 in EDM process. The effects of dielectric fluids are investigated with vegetable oils and conventional dielectric fluid namely Sunflower oil and Kerosene respectively. The important input variables considered in this study are pulse on/off time, current and voltage. Three levels of energy setting are employed for machining with selected dielectric fluids. The output parameters are considered tool wear rate (TWR), material removal rate (MRR) and surface roughness (SR). In the present study effect of vegetable oil as dielectric fluid and the results are compared with conventional dielectric fluid. The result revealed that vegetable oils are successfully employed as dielectric fluids and they are having similar dielectric properties and erosion mechanism compared to conventional dielectric fluid. This proposed vegetable oil based dielectric fluids showed higher MRR than conventional dielectric. It shows vegetable oils have similar dielectric properties compared with conventional dielectric and it is possible to replace as dielectric fluid in EDM process.

Effect of SiC Particle Incorporated Dielectric Medium on Electrical Discharge Machining Behavior of AA6061/B4Cp/SiCp AMCs

“…Dielectric fluids such as kerosine, EDM oil, and deionized water are the most common. Machined by these traditional fluids, poisonous gas is released into the environment [18][19][20]. HSS-M35 was machined using argon, nitrogen, and air as dielectric media by [21].…”

Sustainable Electrical Discharge Machining (EDM) Of Inconel 718 When Using RBD Palm Oil Based Dielectric Fluid

“…In EDM, electrical power generates a thermally charged electrical spark to aid in the removal of material from the workpiece. This is because by using a high peak current and longer pulse duration creates a high temperature around the sparking point, causing the material to melt and evaporate quickly [8]. From the experiment as indicated in Fig 3, it was discovered that the MRR when using the RBD palm oil is higher than kerosene.…”

Design and manufacturing of waveguide of parabolic antenna using EDM process

“…But, these approaches have few drawbacks in terms of low MRR in dry EDM, high concentrated volatile mixture, chances of explosion in near dry EDM, oxide formation and corrosion effects in water based dielectric. In this decade, recently, vegetable oil is used as dielectric fluid by researchers in EDM process and it is observed for obtaining of sustainability in EDM process [1][2][3][4][5][6][7][8][9][10][11][12].…”