Method for optimizing tension system for rolling of ultra thin steel strip of cold continuous rolling mill

Abstract

The invention discloses a method for optimizing a tension system for rolling of an ultra thin steel strip of a cold continuous rolling mill, and relates to control equipment or method special for metal rolling mills or machining products of the metal rolling mills, in particular to optimization of a comprehensively-controlled tension system in the rolling process of ultra thin materials of the cold continuous rolling mill. The cold continuous rolling mill is used for controlling existing equipment parameter and technological parameter data of equipment; according to inlet tensile stress, outlet tensile stress, deformation resistance, the rolling speed, the width of a strip material, the inlet thickness, the output thickness and the working roller diameter of all racks, slipping factors, hot slip indexes, vibration coefficients, rolling force and rolling power of all the racks under the current working condition are calculated; through program control of a computer, optimization control over the tension system is achieved; the depressing capacity, the rolling efficiency and outlet strip shapes and tensile stress distribution of all the racks are considered while the rolling stability, slippage, heat slippage and vibration are considered; and the tail rack output strip shape which represents the strip quality is obviously reduced, and the strip quality is obviously improved than that of a traditional method.

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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