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In this study, surface profiles of workpieces machined under varying machining parameters are investigated experimentally and theoretically in electric discharge machining (EDM). Workpiece specimens are prepared from 2080 tool steel, which is widely used in die making. Effects of machining parameters, namely, discharge current, pulse duration and dielectric flushing pressure on surface roughness are also investigated. It is found that surface roughness increases with increasing discharge current, pulse duration and flushing pressure. Surface profile information obtained from the measurement instrument is transferred to computer using a software. Surface profile information is digitized using another software and they are modeled in form of Fourier series. It is found that the profiles can be well presented by Fourier series with 20 terms.

ELEKTRO EROZYON İLE İŞLEMEDE (EEİ) İŞPARÇASI YÜZEY PÜRÜZLÜLÜK PROFİLİNİN DENEYSEL VE TEORİK OLARAK İNCELENMESİ