Strip steel plate shape control method and device

Abstract

The invention relates to the technical field of strip steel rolling, in particular to a strip steel plate shape control method and a strip steel plate shape control device. The strip steel plate shapecontrol method comprises the steps of based on a convexity equation, setting an outlet convexity variable quantity of strip steel as zero, and obtaining a relation between a roll bending force variable quantity and roll bending force transverse stiffness; based on the relation between the roll bending force variable quantity and the roll bending force transverse stiffness, according to intermediate roll transverse stiffness, obtaining an intermediate roll bending force compensation value; based on the relation between the roll bending force variable quantity and the roll bending force transverse stiffness, according to working roll transverse stiffness, obtaining a working roll bending force compensation value; utilizing the intermediate roll bending force compensation value for compensating an intermediate roll bending force; and utilizing the working roll bending force compensation value for compensating a working roll bending force. According to the strip steel plate shape controlmethod and the strip steel plate shape control device provided by the invention, the setting accuracy of a rolling force can be greatly improved, the adverse effect caused on a strip steel plate shapedue to rolling force fluctuation is reduced, the mutation of the strip steel plate shape is avoided, the stability in production is improved, meanwhile, the production efficiency can be further improved, and the accident rate is reduced.

Description

technical field [0001] The invention relates to the technical field of strip rolling, in particular to a method and device for controlling the shape of a strip. Background technique [0002] Continuous cold rolling refers to the use of hot-rolled steel coils as raw materials, which are pickled to remove scale. The finished product is hard rolled coil. Due to the continuous cold deformation and cold hardening, the strength and hardness of hard rolled coil increase and the ductility and plastic index decrease, so the stamping performance will deteriorate and can only be used for parts with simple deformation. [0003] In the continuous cold rolling process, the fluctuation of the rolling force is often very large. If it is allowed to change without being controlled, the shape of the strip will inevitably change accordingly, resulting in a sudden change in the shape of the strip and instability in production. Contents of the invention [0004] In view of the above problems, ...

AI Technical Summary

Problems solved by technology

The finished product is hard rolled coil. Due to the cold hardening of continuous cold deformation, the strength and hardness of hard rolled coil increase and the ductility and plastic index decrease, so the stamping performance will deteriorate and can only be used for parts with simple deformation.

[0003] In the continuous cold rolling process, the fluctuation of the rolling force is often very large. If it is allowed to change without being controlled, the shape of the strip will inevitably change accordingly, resulting in a sudden change in the shape of the strip and unstable production.

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