The Influence of EDM Parameters in Finishing Stage on Surface Quality of Hot Work Steel Using Artificial Neural Network

In this paper, the influence of different EDM parameters (pulse current, pulse voltage, pulse on‐time , pulse off‐time) in finishing stage on the surface quality (Ra) as a result of application copper electrode to a work piece( hot work steel DIN1.2344) has been investigated. Design of the experiment was chosen full factorial. Statistical analysis has been done and artificial neural network has been used to choose proper machining parameters and to reach certain surface roughness. Finally a hybrid model has been designed to reduce the artificial neural network errors. The experiment results indicated a good performance of proposed method in optimization of such a complex and non‐linear problems.