Influence of electrical parameters in electro discharge machining of tungsten heavy alloys on surface texture properties

摘要: Electro discharge machining (EDM) is a precision method of manufacturing complex shape difficult to materials. In EDM material removed from the workpiece with series discharges occurring in gap between two electrodes. Specific properties surface texture are result thermal removal process. This paper presents results experimental investigation influence process parameters: current and pulse time on tungsten heavy alloys properties. Experimental investigations were carried out Charmilles Form 2LC ZNC machine. Manufacturing samples had dimensions 10 × 3 mm, electrode was cooper commercial fluid 108 MP-SE 60 used as dielectric. Investigation roughness undertaken Taylor-Hobson FORM TALYSURF Series 2 scan profilometer. To characterize after EDM, following 3D parameter used: arithmetic mean deviations Sa, density top Sds. The design experiment methodology three level parameters.Electro the...