Optimization of Cutting Parameters in Face Milling of Nodular Cast Iron for Minimum Surface Residual Stress Using the Taguchi Method

Despite numerous studies focused on the residual stress induced from various machining parameters, the optimization of process parameters for the minimum residual stress machining of nodular cast iron has not been found in the current research. This paper aimed to optimize the milling parameters for low residual stress when nodular cast iron was machined. The experiments were performed with three control factors: cutting speed, feed rate and depth of cut in an L16(43) orthogonal array. The X-ray diffraction (XRD) technique was used to measure the residual stresses in both directions. The results indicate that the cutting speed and feed rate but depth of cut play crucial roles in minimizing the residual stress.