International Journal of Mechanical Engineering

In micro-EDM, discharge parameters significantly influence surface integrity, including key indicators such as surface roughness, residual stress, and microhardness. By employing multi-objective optimization methods, the study systematically analyzes how peak current, pulse width, and pulse interval affect surface quality. It also establishes a mathematical model linking discharge parameters to surface integrity indicators. The research reveals the complex interaction mechanisms among these parameters and uses genetic algorithms to solve multi-objective optimization problems, resulting in parameter combinations that balance processing efficiency with surface quality. This optimization provides a theoretical basis for the rational selection of micro-EDM process parameters, which helps enhance the overall performance of the workpiece.

Micro EDM; Discharge parameters; Surface integrity; Multi-objective optimization; Response surface method