The application of research on powder mixed EDM in rough machining

Powder mixed EDM (PMEDM) has a different mechanism from conventional EDM, which can improve the surface roughness and is now applied in EDM finish machining. However, little research work has been carried out to study PMEDM in rough machining. This paper performs experimental research on the machining efficiency and surface roughness of PMEDM in rough machining. The result shows that PMEDM machining can clearly improve machining efficiency at the same time surface roughness by selecting proper discharging parameters, and can provide reference accordingly for the application of PMEDM machining technology in rough machining.