It is also analyses the control methods of plate flatness.

The coupling calculation of crown on hot strip rolling mill with metal and distortion model;

Study on Monitoring Tactic for the Plate Thickness and Crown of Cold Rolling Strip;

The three-dimensional plastic deformation of strip were analyzed by stream surface strip element method,the elastic deformations of rolls were analyzed by influence coefficient method,the analyzing and computing model of shape and crown of the strip rolled on 4-high CVC mill were established by combining them,and the rolling process of hot strip on 4-high CVC continuous mills was simulated.

Based on an analysis of shape control system of CVC hot strip rolling process in a certain stand mill,a strip shape control simulation software was developed according to actual technological process and applied to the off-line simulation of strip control complying with a certain rolling schedule and the result showed that the strip crown can be controlled in target zone.

In accordance with the problem that products produced by traditional hot strip mill have bad quality, this paper puted forward that the mill without control means for strip shape and strip crown can be transformed into workroll cross sliding type mill.

In this paper,parameter network is used to optimize the influence coefficient of strip crown on the base of measured data.