Recent Developments in Wire Electrical Discharge Machining (WEDM): A Review
Wire Electrical Discharge Machining (WEDM) is a non-conventional manufacturing process, where material
removal takes place due to melting and evaporation of work piece because of the heat produced by discharges. There are
number of process parameters which affect the quality of machined surface in WEDM. But, gap voltage, wire feed, pulse on
time, pulse off time are important. However, the important performance measures in WEDM are Material Removal Rate
(MRR), Surface Roughness (SR), Kerf width. This paper reviews the research work carried out from the inception to the
development of WEDM within past ten years. It reports on the WEDM research relating to performance measures
improvement, process parameters optimization. A wide range of WEDM industrial applications for the variety of materials is
reported with variations. The paper also discusses the future trend of research work in the area of WEDM.
Keywords - WEDM, Process Parameter, Process Optimization, MRR, SR, Kerf Width.