Wire electrical discharge machining (WEDM) is a non-conventional machining technology, which has become indispensable in many industries. Typical morphology of a surface machined by wire spark erosion (WEDM) is characterized by plenty of craters caused by electrospark discharges produced during the cutting process. The study deals with the evaluation of the surface morphology using a 3D colour-filtered and unfiltered images. Attention was also paid to a total height profile of craters Rt. The experiment consisted of three different settings of machine parameters and 3 metallic materials were used for the testing.
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