Effect of Machining on Workpiece Surface Characteristics in Electric Discharge Drilling (EDD)

Year 2019, Volume: 31 - Özel Sayı I:, 11 - 16, 20.05.2019

Oğuz Erdem , Can Çoğun , İbrahim Uslan

https://doi.org/10.7240/jeps.450866

Abstract

In electric discharge drilling (EDD), rapid
local heating and cooling of the workpiece surface by means of electric
discharges results in surface layers (recast, heat affected and base material).
In this study, the main workpiece surface texture measures, namely the recast
layer thickness (RLT) and average surface roughness (R_a)
characteristics were investigated for varying machining parameters (discharge
current and pulse on time). The conducted experiments revealed the strong
dependence of surface characteristics on machining parameters.

Keywords

Electric discharge drilling, Recast layer thickness, Average surface roughness, Ti6Al4V, Inconel 718

Effect of Machining on Workpiece Surface Characteristics in Electric Discharge Drilling (EDD)

Abstract

In
electric discharge drilling (EDD), rapid local heating and cooling of the
workpiece surface by means of electric discharges results in surface layers
(recast, heat affected and base material). In this study, the main workpiece
surface texture measures, namely the recast layer thickness (RLT) and average
surface roughness (R_a) characteristics were investigated for varying
machining parameters (discharge current and pulse on time). The conducted
experiments revealed the strong dependence of surface characteristics on
machining parameters.

Keywords

Electric discharge drilling, Recast layer thickness, Average surface roughness, Ti6Al4V, Inconel 718

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