An optimization method of tension system for ultra-thin strip rolling in tandem cold rolling mill

Abstract

A tension system optimization method for the rolling of ultra-thin strip steel in a tandem cold rolling mill, which relates to control equipment or methods specially suitable for metal rolling mills or their processed products, in particular to a comprehensive control of the rolling process of ultra-thin strips in a tandem cold rolling mill The tension system is optimized, using the existing equipment parameters and process parameter data of the control system of the cold tandem rolling mill, according to the entrance tensile stress, exit tensile stress, deformation resistance, rolling speed, strip width, entrance thickness, and exit tension of each rack. Thickness, work roll diameter, calculate the slip factor, thermal slip index, vibration coefficient, rolling force, rolling power of each stand under the current working conditions, realize the optimal control of the tension system through computer program control, and consider rolling stability , slipping, thermal slipping and vibration, while taking into account the reduction capacity, rolling efficiency, and the exit shape and tensile stress distribution of each stand, the exit shape of the final stand that characterizes the quality of the strip is significantly reduced, and the strip mass ratio The traditional method has been significantly improved.

Description

technical field [0001] The invention relates to a control device or method specially suitable for a metal rolling mill or its processed products, in particular to a tension system optimization method for the comprehensive control of a cold tandem rolling unit in the ultra-thin material rolling process. Background technique [0002] For tandem cold rolling mills, in the production process, the tension between stands is an important rolling process parameter, which plays a decisive role in the stability of rolling. In the past, during the on-site production process, the main considerations for the tension setting of the CVC-type cold tandem rolling mill were rolling stability, slipping and vibration prevention and other issues, while issues such as strip shape, reduction capacity, and rolling efficiency were mainly considered. Almost no consideration. In fact, for the tandem cold rolling mill, under the premise of the given reduction schedule and lubrication process, the shap...

AI Technical Summary

Problems solved by technology

Taking roll bending as an example, if the bending force is too large, it will bring additional waves such as quarter waves, resulting in product degradation

However, if the intermediate roll moves too much, it will cause a serious peak distribution of the force between the rolls, resulting in a sharp increase in roll consumption.

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