Hot-rolled strip steel width prediction method

Abstract

The invention provides a hot-rolled strip steel width prediction method. The hot-rolled strip steel width prediction method comprises the following steps: an outlet thickness, an inlet thickness, an inlet width and an inlet temperature of a hot-rolled plate blank are determined according to technological procedure data in one pass of hot rolling; an inlet speed of the hot-rolled plate blank and a roller speed are detected to obtain a roller radius and a friction factor between a roller and the plate blank; and a strip steel after-rolled width is predicted by using a width prediction model of the hot-rolled plate blank in any position of a rolling deformation area. The hot-rolled strip steel width prediction method predicts the broadening condition of the hot-rolled steel strip; the obtained strip steel after-rolled width is more close to an actual scene value; and the hot-rolled strip steel width prediction method has theoretical value and actual application value incapable of being replaced by a numerical value fitting method. On the basis of comprehensively considering all process parameters in the rolling process, the hot-rolled strip steel width prediction method precisely predicts the strip steel after-rolled width in the rolling process, and solves the problem of prediction of the plate blank after-rolled width under different production conditions. The hot-rolled strip steel width prediction method can obtain the after-rolled width through online calculation, and improves the width control precision when saving the production investment cost.

Description

technical field [0001] The invention belongs to the technical field of rolling, in particular to a method for predicting the width of a hot-rolled steel strip. Background technique [0002] With the development of hot-rolled production technology and the increasing quality requirements of users for hot-rolled strip products, width accuracy has gradually become an important indicator of product quality. Expansion makes the research on width control more and more important. At present, the width control technology at home and abroad is to use the width measuring instrument equipment after the rolling mill to carry out width feedback control, which has a certain hysteresis, so that the width adjustment amount cannot control the action of the signal in time, and there is a large overshoot and a long adjustment time. , reducing the stability of the control system. Therefore, it has more and more practical significance and application value to use mathematical model to accuratel...

AI Technical Summary

Problems solved by technology

At present, the width control technology at home and abroad is to use the width measuring device after the rolling mill to carry out width feedback control, which has a certain hysteresis, so that the width adjustment amount cannot control the action of the signal in time, and there is a large overshoot and a long adjustment time. , reducing the stability of the control system

Images