Axial movement control method for continuously variable crown (CVC) working roll

Abstract

The invention relates to an axial movement control method for a continuously variable crown (CVC) working roll and relates to a method for controlling the shape of a cold-rolling strip steel plate. The method solves the problem that the strip steel material production changes a lot and the problem that the axial movement position value of the working roll cannot stably transit to the axial movement position value of the next strip steel target working roll during continuous production. The method comprises the following steps of: defining the thickness grade and the width grade of the strip steel; establishing a working roll axial movement position setting value table; acquiring characteristic data of the working roll; determining the total length and the direction of the axial movement of the working roll; determining total movement times; determining one strip steel constant speed; determining total movement time; determining movement interval time; outputting the axial movement position value and the movement direction of the working roll; and stably rolling for one minute. By the method, a strip steel rolling mill unit can be automatically adapted to the production of the strip steel with different material characteristics; one plate shape can be automatically controlled to be converted into another plate shape; the target control precision is higher; and the method is easy and convenient to operate and has wide adaptability.

Description

technical field [0001] The invention relates to a production process of using "CVC work roll axial movement" to control the shape of cold-rolled strip steel in iron and steel smelting, in particular to an optimal control method for CVC work roll axial movement. Background technique [0002] The roll is an important equipment for thinning the cold-rolled strip, and the axial movement control of the CVC work roll is the key to ensure the flatness of the strip. The roll equipment invented by the German "SMS Dimag Co., Ltd." of the CVC roll. Such as figure 1 shown. figure 1 It is a schematic diagram of the axial movement of the CVC work roll. [0003] In order to achieve flatness control, CVC work rolls are generally arranged above and below the strip 3, that is, upper work roll 1 and lower work roll 2, and each work roll has the function of bidirectional movement. In the figure (a) is the center position of the axial movement of the CVC work roll; (b) is the position of the...

AI Technical Summary

Problems solved by technology

[0016] The purpose of the present invention is to solve the problems existing in the prior art, provide a kind of CVC work roll axial movement optimization control method, use this method to determine the work roll axial movement position and automatically adapt to the strip steel production of different material characteristics, solve During continuous production, the material of the production strip changes greatly, and the axial movement position of the work roll cannot be smoothly transitioned to the value of the axial movement position of the target work roll of the next strip, so as to ensure the continuous and stable production of the production line

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