Study The Influence of Changing Voltage Values on The Surface Roughness (SR) in The Electrical Discharge Machining Process

  • Shukry H. Aghdeab, Anwer Q. Abdulnabi
Keywords: Electrical discharge machining, Surface roughness, Minitab 19, Voltage values.

Abstract

Electrical discharge machining denoted by (EDM) it is one of the must substantial types of non-conventional cutting machines in which removal of material fundamentally occurs due to thermal energy of the electrical spark that generated because of the electrical energy. This article aims to study the effect of changing voltage values on surface roughness (SR) that product from removal of material and make comparison between the results obtained. Peak current Ip (12, 24, 50) A, pulse on time Ton (100, 200, 400) µs, pulse off time Toff(3, 6.5, 12) µs and two voltages values (140, 240) V have been selected as input parameters. Machining process was carried out on 27 specimen of stainless steel AISI 444 as a workpieces with a copper electrode and presence of transformer oil. Using Minitab 19 software and factorial design approach to designed and analyzed of the experiments. The results show that the SR was increase with increase in voltage, Ip and Ton. Maximum SR achieved at (240) V with value of (7.82) µm and better surface finish was (3.27) µm obtained at lower voltage value of (140 V).

Published
2021-09-12
How to Cite
Anwer Q. Abdulnabi, S. H. A. (2021). Study The Influence of Changing Voltage Values on The Surface Roughness (SR) in The Electrical Discharge Machining Process. Design Engineering, 11367-11375. Retrieved from http://www.thedesignengineering.com/index.php/DE/article/view/4250
Section
Articles