Experimental Investigation of Electro Erosion Machining Parameters of Boron Alloy Steels

Abstract

In this study, the machinability of boron alloy steel by electro erosion method was investigated. Three different parameters were chosen as variables during the experiments (discharge current, pulse on-time, and pulse of time) and the effects of machining parameters on material removal rate (MRR), electrode wear rate (EWR), and average surface roughness (Ra) were investigated. According to the experimental results, MRR, EWR, and Ra increased with the increase of discharge current. It was determined that while the MRR and EWR values increased, electrode wear decreased with the increase of the stroke time. The ideal processing parameters for each processing level are at different levels has been specified. Ideal machining parameters for workpiece machining speed were found 12 A, 100 µs, and 50 µs for current, pulse duration, and pulse waiting time, respectively. Ideal processing parameters for EWR were found 24 A for current, 100 µs for pulse duration, and 6 µs for pulse waiting time. Ideal processing parameters for surface roughness were determined as 12 A, 50 µs, and 24 µs for current, pulse duration, and pulse waiting time, respectively. As a result of the experimental studies; material removal rate (MRR), electrode wear rate (EWR) increased with the increase of workpiece surface roughness and discharge current. It was also observed that MRR, workpiece surface roughness values increased with increasing stroke time. © 2022, TUBITAK. All rights reserved.