Investigating affecting parameters on surface roughness and metal removal rate in wire electrical discharge machining process

Abstract

This article presents an approach to study the role of cutting factors on surface quality and material removal rate in (Wire Electrical Discharge Machining) process of O1tool steel. Pulse duration, pulse pause time and working current were adopted as process parameters while surface roughness and metal removal rate were the outputs. Three levels of pulse on time have been used 10, 20 and 30 μ sec. while pulse off time was 10, 15 and 20 μ sec. and finally the current was 6, 8 and 10 A while the other parameters kept constant. The experiments showed that increasing pulse on time will increases metal removal rate and surface roughness, in addition increasing pulse off time will reduce metal removal rate but improving surface finish. Finally increasing the current will increase metal removal rate and reduce surface roughness.