Investigation of Cutting Performance of the Ceramic Inserts in Terms of the Surface Roughness and Tool Wear at Turning of PMD 23 Steel

摘要

In this study, the cutting performance of ceramic insert was investigated in terms of surface roughness and tool wear in turning of hardened PMD 23 powder metallurgical (PM) steel. The turning tests were performed with three different cutting speeds, feed rates and depth of cuts in dry cutting condition. Analysis of Variance (ANOVA) was performed in order to determining of the effect of cutting parameters on the average surface roughness (R_a). The experimental results and indicated that the feed rate was most significant parameter on changes in R_a. Furthermore, images of cutting insert used in turning tests were taken using Scanning Electron Microscope (SEM) for determining of the wear types and its mechanisms.