Evaluation of residual stresses after irregular interrupted machining

Abstract

Residual stress occurs in many machined components and parts. Over time, several methods have been developed for the investigation of residual stress in the material - destructive and non-destructive. This article deals with the evaluation and comparison of residual stress in the material when machining steel C45 and 11CrMo9-10, when the tool enters into the cut and stands out in conditions of an interrupted cut. A non-destructive method, based on X-Ray diffraction, was applied to evaluate the residual stress. The points were measured on the last machined slat by using interrupted cut simulator. An irregular interrupted cut was achieved by gradually machining 4, 3, 2 and 1 slat. The experiments were realized in co-operation with the Faculty of Mechanical Engineering, VSB - Technical University of Ostrava, Czech Republic and the Faculty of Mechanical Engineering, the University of Zilina, Slovakia.