Analysis of Surface Roughness of Diamond-Burnished Surfaces Using Kraljic Matrices and Experimental Design

This study analyzed the surface layer condition of X5CRNI18-10 stainless austenitic chromium–nickel steel test pieces after burnishing. Among the finishing operations, burnishing is an economical and low-environmental-impact process. In special cases, grinding can be replaced by burnishing, so the same roughness can be achieved with much lower environmental impact. The aim of this study is to analyze the roughness of a surface machined by diamond burnishing using Kraljic matrices. The technological parameters used during the burnishing tests were burnishing speed, feed rate, and burnishing force. The full factorial experimental design method was used to carry out the experiments. Using Kraljic matrices, the optimum burnishing force was determined to select the best value of the surface roughness, and the change in surface roughness was investigated using full factorial experimental design for different technological parameter combinations. A special improvement ratio formula was developed to evaluate the effectiveness of the burnishing process with respect to 2D and 3D roughness parameters.