On-line integrated control method of plate shape and plate crown of UCM continuous cold mill train with five machine frames

Abstract

The invention discloses an on-line integrated control method of the plate shape and the plate crown of a UCM continuous cold mill train with five machine frames, which is characterized in comprising the following steps: a. collecting equipment parameters of the UCM continuous cold mill train with five machine frames and six rolls; b. collecting key rolling process parameters of strips, the plate shape and the plate crown of which are to be controlled; c. roughly searching related control parameters of the plate shape and the plate crown; d. precisely searching related parameters of the plate shape and the plate crown; and f. calculating the movement value of intermediate rolls of 1-5 machine frames of the continuous cold mill train and the roll bending force of working rolls and the intermediate rolls and realizing the on-line control of the plate shape and the plate crown of the UCM continuous cold mill train. On the basis of providing an integrated control objective function of the plate shape and the plate crown for the first time, the invention also solves the problem of reducing roll consumption as much as possible, provides the on-line integrated control method of the plate shape and the plate crown of the UCM continuous cold mill train with five machine frames and six rolls, develops corresponding practical engineering calculative strategies and realizes the on-line real-time control of the plate shape and the plate crown of the continuous cold mill train by a mechanism model for the first time.

Description

Technical field [0001] The invention relates to a cold tandem rolling production process technology, in particular to an on-line comprehensive control method for the flatness and profile of a cold tandem rolling unit of a five-stand six-roll UCM model based on a mechanism model. Background technique [0002] The production process and equipment layout of the five-stand six-high UCM tandem cold rolling mill are as follows figure 1 As shown, the strip 1 is uncoiled from the uncoiler 2 and then sent to the stand. After rolling in five stands, the strip 1 reaches the specified thickness and is sent to the coiler 3 for rewinding. The rolls of each stand include a work roll 4, an intermediate roll 5 and a support roll 6, and the work rolls are in direct contact with the surface of the strip. In order to control the shape and convexity of the plate (see figure 2 ), in the rolling process, the 1-5 stand has the work roll bending roll, the intermediate roll bending roll and the intermed...

AI Technical Summary

Problems solved by technology

In the past, in the production process on site, the setting of the control parameters of the strip shape and strip crown of the fifteen parts of the five-stand six-high UCM cold rolling mill is usually set separately for each stand. It is easy to give full play to the potential of all control methods, and it is easy to have five racks, fifteen parts, and the effects of the plate shape and plate convexity control methods cancel each other out, weakening the control effect, and it may even appear after all the control methods are integrated. Additional partial wave shapes affect the quality of finished products

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