Experimental Investigation of Stability of Vegetable Oils Used as Dielectric Fluids for Electrical Discharge Machining

Maria-Crina Radu; Raluca Tampu; Valentin Nedeff; Oana-Irina Patriciu; Carol Schnakovszky; Eugen Herghelegiu

LAPSE

Living Archive for Process Systems Engineering

LAPSE:2021.0179

Published Article

LAPSE:2021.0179

Experimental Investigation of Stability of Vegetable Oils Used as Dielectric Fluids for Electrical Discharge Machining

Maria-Crina Radu, Raluca Tampu, Valentin Nedeff, Oana-Irina Patriciu, Carol Schnakovszky, Eugen Herghelegiu

April 16, 2021

One main drawback of electrical discharge machining (EDM) is related to the dielectric fluid, since it impacts both the environment and operator health and safety. To resolve these issues, recent research has demonstrated the technical feasibility and qualitative performance of vegetable oils as substitutes for hydrocarbon-based dielectric and synthetic oils in EDM. However, due to the higher content of unsaturated fatty acids, vegetable oils lose their stability, due to several factors such as heating or exposure to light or oxygen. The present study is a first attempt to analyze the extent to which the physic-chemical properties of vegetable oils change during EDM processing. Refractive index, dynamic viscosity and spectra analyses were conducted for sunflower and soybean oils. The results revealed that, under the applied processing conditions, no structural changes occurred. These findings are very promising from the perspective of EDM sustainability.

Record ID

LAPSE:2021.0179

Keywords

EDM, FTIR, refractive index, UV/Vis, vegetable oil, viscosity

Subject

Food & Agricultural Processes

Suggested Citation

Radu MC, Tampu R, Nedeff V, Patriciu OI, Schnakovszky C, Herghelegiu E. Experimental Investigation of Stability of Vegetable Oils Used as Dielectric Fluids for Electrical Discharge Machining. (2021). LAPSE:2021.0179

Author Affiliations

Radu MC: Department of Industrial System Engineering and Management, Faculty of Engineering, Vasile Alecsandri University of Bacau, Calea Marasesti 157, 600115 Bacau, Romania
Tampu R: Department of Chemical and Food Engineering, Faculty of Engineering, Vasile Alecsandri University of Bacau, Calea Marasesti 157, 600115 Bacau, Romania
Nedeff V: Department of Industrial System Engineering and Management, Faculty of Engineering, Vasile Alecsandri University of Bacau, Calea Marasesti 157, 600115 Bacau, Romania; Gheorghe Ionescu-Sisesti Academy of Agricultural and Forestry Sciences, B-dul. Marasti N
Patriciu OI: Department of Chemical and Food Engineering, Faculty of Engineering, Vasile Alecsandri University of Bacau, Calea Marasesti 157, 600115 Bacau, Romania
Schnakovszky C: Department of Industrial System Engineering and Management, Faculty of Engineering, Vasile Alecsandri University of Bacau, Calea Marasesti 157, 600115 Bacau, Romania
Herghelegiu E: Department of Industrial System Engineering and Management, Faculty of Engineering, Vasile Alecsandri University of Bacau, Calea Marasesti 157, 600115 Bacau, Romania

Journal Name

Processes

Volume

8

Issue

9

Article Number

E1187

Year

2020

Publication Date

2020-09-18