A Review of Electric Discharge Machining Methods and Numerical Simulation Studies of the Mechanism

From the perspective of numerical simulation, taking the discharge state as the main differentiation point, focusing on the discharge channel, energy distribution ratio, discharge crater, and material removal process involved in the discharge process, this paper summarizes the current progress of the research on the electric discharge machining(EDM) method, the mechanism of electric spark machining and electric arc machining, and puts forward the trend of the future numerical simulation research on the EDM mechanism, focusing on the equivalent heat source, multi-physics field and molecular dynamics composite simulation, and electric arc machining mechanism, to reveal more accurately the mechanism behind EDM and to solve the difficult problem that it is difficult to achieve both efficiency and quality of electric arc machining.