A comprehensive review of powder mixed EDM on powder materials,process & response parameters,technological advancements,challenges and future prospects in precision manufacturing

Abstract

The standard method of EDM (electrical discharge machining) has many benefits through the new application of conductive powders into the dielectric fluid (or dielectric medium), in a hybrid type of machining called PMEDM (powder mixed EDM), which is an emerging hybrid cutting process. PMEDM provides the biggest picture of the characteristics, principles, other indicators of performance, and recent improvements. In addition, a significant number of powder types affect how well a PMEDM process will perform, including aluminum, copper, graphite, and silicon carbide. There are also many interrelated fundamental variables involved in producing electrical discharges that produce the results desired from machining. They include how much powder is mixed with the fluid; what current is used to discharge the fluid; how long the electrical discharge takes to recharge the electrodes; and how far apart the two positive electrodes are when they create their current. The results of these interactions can be seen in the wear on tools, surface finishing, and accuracy of machining. Thus, this article provides an overview of both the fundamental processes and limitations associated with the PMEDM process and gives a thorough overview of the latest technological advancements within this area of research. Ultimately, the PMEDM process has grown to become very important to the future of advanced machining technologies, and this will continue to support other forms of advanced machining technologies that could change the future of precision manufacturing.