Research on the Effect of Reduction Distribution in Universal Stands on the Process of Metal Transition from Sides to the Center Line of Transfer Bar

Abstract

The edge defects formed on the continuously cast slab before entering the hot rolling mill in the roughing group of the broadband mill are moved from the side faces and edges of the slab to the upper and lower surface of the slab. This process is facilitated by alternating compression in vertical and horizontal rolls. This article describes the transition of a metal from the edges and side faces of the slab at the top and bottom surfaces of the slab sheet during rolling in universal stands of the roughing stands of the hot rolling mill. The amount of movement of the defects on the surface of the slab directly affects the amount of lateral trim is necessary for assured removal of marginal defects in subsequent processing. The presented mathematical model based on the finite element method includes compression of continuously cast slab in three separate stands consisting of vertical and horizontal rolls. The influence of a number of technological parameters and modes of adjustment of the vertical rolls on the value of the metal displacement to the center line of the transfer bar is studied.