Experimental INVESTIGATION OF influence WEDM PARAMETERS ON SURFACE ROUGHNESS AND FLATNESS DEVIATION

Wire electrical discharge machining (EDM) is a modern technology that is widely used in the production of difficult to cut conductive materials. Stochastic nature of electrical discharges causing to difficult to identify the influence WEDM parameters on surface roughness and dimensional accuracy of machining parts. Predicting favorable machining conditions for the required surface finish and dimensional accuracy plays a key role in the process. Response surface methodology (RSM) was used to build empirical models on the influence of the discharge voltage VB , pulse interval SB , and workpiece height on the surface roughness ( Ra ) and the flatness deviation during the machining of tool steel X153CrMoV12. The conducted analysis of the material removal physics in relation to investigated parameters indicated potential sources of shape errors of cutting parts.