Effect of the Residual Stress to the Fatigue Failure of the Bimetallic Work Roll in 4-High Rolling Mill

Abstract

In this chapter, the finite element method (FEM) simulation is performed to study the generated stress when the rolling roll is used in the 4-high rolling mill. In order to study the effect of the residual stress, the heating treatment of the work roll is considered before the rolling process. By using the 3D model, we focus on the fatigue failure near the boundary layer, where the work roll received load from the backup roll and the rolled steel. The fatigue failure is discussed focusing on several critical points inside of the work roll. Results of the generated rolling stress are compared between the superposition method and the finite element method (FEM) analysis.