Research on the Mandrel Wear of a Screw Rolling Piercing Mill by the Finite Element Method

Abstract

This paper aims to use the QFORM software package based on the finite element method with a view to computer modeling the wear process of rolled mandrels of the screw rolling mill MISIS - 130D while rolling stainless steel X12CrNiTi18-9 billets into pipes. The wear properties of the mandrels change as the plugging process occurred under various initial conditions. The results show that the wear rate on the mandrels in the reduction zone is more intense at a higher feed angle and distance between guide shoes. Wear distribution on mandrels surfaces can be improved by adjusting the velocity along the rolling side of the mandrels and replacing them with long fast-moving long mandrels. The simulation which results in this work can be used to predict the properties of working-tool wear, depending on the technical parameters, and rolling mode, which consequently increases the quality of rolling process fabrication products and the service life of tools.