Thermal-electrical modelling of electrical discharge machining process

摘要: Non-traditional machining has grown out of the need to machine exotic engineering metallic materials, composite materials and high tech ceramics having good mechanical properties thermal characteristics as well sufficient electrical conductivity. Electric Discharge machinery developed in late 1940’s been accepted worldwide a standard process manufacturing is capable geometrically complex or hard material components, that are precise difficult-to-machine such heat treated tool steels, composites, super alloys, ceramics, hastalloys, nitralloy, nemonics, carbides, resistant steels etc. being widely used die mold making industries, aerospace, aeronautics nuclear industries The erosion theory most mathematical model for evaluating removal from electrodes during EDM process. It postulates involves melted electrode its evaporation by discharge energy dissipated on surface. Part evaporated then ejected force different natures. Keeping this view, present work undertaken generate thermal-electrical sparks generated liquid media determine temperature distribution piece. For single test, copper En- 19 was specimens. amount varies with thermal-physical conductor. using ANSYS software. uses finite-element method solve underlying governing equations associated problem-specific boundary conditions. Material Removal Rate, Surface Roughness maximum reached channel determined.