Study on Surface Roughness and Material Removal Rate (Mrr) of Aluminium 2024 in Electrical Discharge Machining

Abstract

Surface Roughness and Material Removal Rate are foremost important factor in Electrical Discharge Machining (EDM). This study is done to see about how different machine parameters affect the Surface Roughness as well MRR. The material used is of Aluminium 2024 which has wide range of applications in Automotive and Aerospace Industry. In Aluminium 2000 series, constitution of Copper is the highest. The main reason for u s i n g Aluminium is its effective use in many Industry as well its abundance in nature. It can be treated with many other elements and properties can be widely changed to achieve the desirable uses. Copper electrodes are used for machining due its high electric resistance between the metals as well proper current discharge when compared to other electrodes. This work would give a glimpse of how Surface Roughness and MRR vary with Gap Voltage and Pulse On-Time. Peak current is fixed as constant value as they don't play a major role in determining the Surface Roughness and MRR. The above said parameters are varied to the requirement and the readings are noted down. Later MRR, Surface Roughness are measured and the readings are plotted in table. Graphs are plotted from the values obtained and conclusions are made from it. For higher Gap Voltage and optimum Pulse On-Time it showed greater Surface Roughness as well good MRR.

Elektro Erozyon Yöntemi ile İşlenen Al2024-T3 Malzemesinin İşleme Parametrelerinin Optimizasyonu

“…Deney sonuçları yüzey pürüzlülüğü ve malzeme kaldırma oranı değerleri kullanılarak yorumlanmıştır. Yapılan çalışmalar sonucunda optimum darbe süresinde referans geriliminin artışı yüzey pürüzlülüğüne ve malzeme kaldırma oranına pozitif yönde etki yaptığı görülmüştür [6].…”