期刊名称：Advances in Science and Technology Research Journal
印刷版ISSN：2080-4075
电子版ISSN：2299-8624
出版年度：2019
卷号：13
期号：3
页码：162-169
DOI：10.12913/22998624/111846
语种：English
出版社：Society of Polish Mechanical Engineers and Technicians
摘要：Electric Discharge Machining (EDM) is widely used for manufacturing complex metal parts. The machiningparameters like dielectric fluid, electrode material, current, voltage and pulse rate during EDM are controlled toobtain desired Material Removal Rate (MRR) and it also affects the surface morphology of manufactured components. In this research, effect of changing machining parameters, dielectric fluid (distilled water and kerosene) andelectrode materials (copper and graphite) on surface morphology of Al 6061 T6 alloy during EDM is investigated.It is observed that the distilled water reacts with the molten aluminum and produces deep pits / voids on the surfacedue to liberation of hydrogen gas. A micro crack network is seen radiating from the edge of these pits. It is believedthat the very high thermal conductivity of distilled water is responsible for the micro crack network and reducedmaterial removal rate when compared with non-reactive kerosene oil.
