An optimization method of tension system for ultra-thin strip rolling in tandem cold rolling mill
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A technology of continuous cold rolling mill and optimization method, applied in the direction of tension/pressure control, etc., can solve the problems of product degradation, increased roll consumption, and peak distribution of force between rolls, so as to improve the quality of strip rolled products, improve The effect of control accuracy and large economic benefits
Active Publication Date: 2016-11-30
BAOSHAN IRON & STEEL CO LTD
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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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[0046] figure 1 It is an embodiment of the tension system optimization method for ultra-thin strip rolling in the cold tandem mill of the present invention. In order to further illustrate the application process of the related technology described in the present invention, this embodiment uses 1420 five-stand 3+2 type CVC Taking the tandem cold rolling mill as an example, it introduces in detail the setting process of the tension system optimization method in the ultra-thin strip rolling process of a 3+2 type CVC tandem cold rolling mill. exist figure 1 In the shown control flowchart, the tension system optimization method of the present invention comprises the following steps:
[0047] In step S01, key equipment parameters and process parameters of the cold tandem rolling mill are obtained, including the following steps:
[0048] a1) Collect the equipment parameters of the 3+2 type CVC tandem cold rolling mill, including:
[0049] 1-5# frame work roll diameter D wi = {482...
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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...
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