Photochemical Machining of SS 316L

This paper presents the optimization and mathematical modelling of machining parameters in Photochemical Machining (PCM) of SS316L. Twenty-seven experimental runs base on full factorial (3³) Design of Experiments (DoE) technique were performed. The control parameters considered were the etchant concentration, etching temperature and etching time. The response parameter was Undercut (U_c). The effect of control parameters on undercut was analysed using Analysis of Variance (ANOVA) technique and their optimal conditions were evaluated. It was found that etchant temperature and etching time are the most significant factors for undercut.