Strip rolling mill strip shape presetting method and device

Abstract

The embodiment of the invention provides a strip rolling mill strip shape presetting method and a device. The method comprises the steps that a rolling efficiency coefficient is calculated according to input data, outlet convexity distribution is obtained, the rolling force increment per unit width is obtained according to the rolling efficiency coefficient, and an initial on-load roll gap is calculated through a roll system elastic deformation model; an efficiency coefficient of the input data to the initial on-load roll gap is calculated by adopting the roll system elastic deformation model,a zero roll gap is obtained according to the efficiency coefficient of the input data to the initial on-load roll gap, and a current roll gap is calculated; and according to the current roll gap andthe outlet convexity distribution, the deviation between the current roll gap and the target roll gap is obtained, and according to the deviation between the current roll gap and the target roll gap and the efficiency coefficient of the input data of an executing mechanism to the initial on-load roll gap, the increment of the executing mechanism is obtained. According to the strip rolling mill strip shape presetting method and the device, the strip shape of the cold rolling mill can be set in an automatic mode, and the problems that reliability is low and industrial application is difficult toachieve due to fact that experience is relied on are solved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of strip rolling mills, in particular to a method and equipment for presetting the shape of a strip rolling mill. Background technique [0002] For cold rolling mills, a complete flatness automatic control system consists of preset control and feedback control. Pre-set control is that the shape control computer pre-sets the adjustment amount of the shape control mechanism according to the selected target shape before the strip enters the roll gap and outputs it to the shape actuator. The shape feedback control at the head of each coil cannot be put into operation. At this time, each shape adjustment mechanism of the rolling mill needs to preset the value to ensure the shape of the strip at the initial section. When the feedback control is put into operation, the preset value at that time The value is the starting point and initial value of the feedback control, so the preset contro...

AI Technical Summary

Problems solved by technology

Flatness control involves the calculation of elastic deformation of the rolling mill roll system and plastic deformation of the strip and their coupling. Most of the domestic cold rolling mill shape presets are based on the experience of field measured data, which cannot meet the actual needs of industrial applications.

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