Theoretical Model and Experimental Study of Dynamic Hot Rolling

Abstract

At present, the commonly used hot rolling model is only applicable to the static rolling process. However, to study the dynamic rolling process, a dynamic rolling model with roll vertical movement velocity parameters is required. In this study, the influence of the vertical movement velocity of the rolls on the rolling process is considered, and a dynamic rolling process model is proposed when the roll gap is reduced during the hot rolling dynamic rolling process. Mathematically, the model is based on the upper limit method. The model considers the influence of the dynamic rolling process on the length of the deformation zone, establishes a dynamic velocity field model and an average deformation rate model, and then solves the total power of the rolling process. Finally, the dynamic rolling force equation is given. Compared with the experimental results, the dynamic rolling model in this paper has high accuracy with an average error of 4%. In addition, the influence of roll vertical velocity on rolling parameters is discussed, which provides a basis for the study of the dynamic rolling process.

Differential Analysis and Prediction of Planar Shape at the Head and Tail Ends of Medium-Thickness Plate Rolling

“…Scholars worldwide have conducted extensive research on predicting the planar shape of rolled products during the rolling process, leading to significant achievements [8]. For example, a planar shape prediction model has been developed using regression algorithms that determine the functional relationship between rolling parameters and the planar shape of rolled products based on a large volume of experimental data [9][10][11]. Additionally, recent advances in artificial intelligence technology have enabled the use of intelligent techniques in rolling technology development.…”

“…By substituting Equation (8) into Equation (10), the expression for the volume of the fourth part ( 4V ) can be expressed as:…”