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Method for optimizing tension system of cold continuous rolling unit by taking crack control as target

A technology of cold tandem rolling mills and optimization methods, applied in tension/pressure control, special data processing applications, instruments, etc., can solve the problems that cannot solve the purpose of tension system optimization, etc., so as to increase the economic benefits of enterprises, ensure product quality, and improve The effect of production efficiency

Active Publication Date: 2019-04-02
BAOSTEEL ZHANJIANG IRON & STEEL CO LTD
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Problems solved by technology

[0007] This published patent document uses a total of 11 steps from the temperature of the emulsion to the set value of the flow rate to output the optimal process lubrication system coefficients flowjy, cy, tdy to complete the process for the purpose of preventing roll burst in the cold tandem mill The optimal setting of the lubrication system cannot solve the optimal purpose of the tension system aimed at the prevention and control of opening in the object of the present invention

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  • Method for optimizing tension system of cold continuous rolling unit by taking crack control as target
  • Method for optimizing tension system of cold continuous rolling unit by taking crack control as target
  • Method for optimizing tension system of cold continuous rolling unit by taking crack control as target

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Embodiment Construction

[0034] In order to better understand the above-mentioned technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0035] Such as figure 1 As shown, (a) collect the equipment and process parameters of the cold rolling mill, including: the radius R of the work rolls of each stand i ={1#217.5; 2#217.5; 3#217.5; 4#217.5; 5#217.5} (mm), the surface speed v of each rack roll ri ={1#297; 2#471; 3#684; 4#976; 5#999}(m / min), original roughness Ra of work rolls of each frame ir0 ={1#0.6; 2#0.6; 3#0.6; 4#0.6; 5#0.6} (μm), work roll roughness attenuation coefficient B Li ={1#0.01; 2#0.01; 3#0.01; 4#0.01; 5#0.01}, the rolling kilometers L of the working rolls of each stand after changing rolls i ={1#200; 2#280; 3#300; 4#320, 5#250}(km), wherein, i=1,2,...,n, represents the stand number of the tandem cold rolling mill, n is the total number of racks, the same below;

[0...

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Abstract

The invention discloses a method for optimizing a tension system of a cold continuous rolling unit by taking crack control as a target. The method comprises the following steps (a) parameters of equipment and processes of the cold rolling unit are collected, wherein the parameters comprise radii of rack working rollers, surface line speed of the rack working rollers, original roughness of the rackworking rollers, rough degree attenuation coefficients of the working rollers and rolling kilometers of the rack working rollers after roller exchange; and (b) rolling process parameters of strip steel are collected, and the rolling process parameters comprise elastic modulus of the strip steel, the poisson ratio of the strip steel, the width of the strip steel, the strip steel inlet thickness ofeach rack, the strip steel outlet thickness of each rack, the press-down rate, the inlet speed of the strip steel before each rack, strip steel deformation resistance and strip steel shear yield limit. According to the method, a proper tension system optimization value is given by combining equipment and process characteristics of the cold continuous rolling unit, the quality of strip steel products in the high-speed rolling process of the cold continuous rolling unit is guaranteed, and the production efficiency of plate and strip production enterprises is improved.

Description

technical field [0001] The invention relates to a control device or method for a metal rolling mill or its processed products, in particular to a tension system optimization method for a cold tandem rolling mill with the aim of preventing cavity opening. Background technique [0002] In recent years, with the rapid development of the automobile industry, electronics industry, food packaging and other industries, the market demand for strips has been increasing. At the same time, the quality requirements of strip product users are also continuously improving, which prompts Strip manufacturers must focus on the quality of strip products while increasing production. Cold rolling is a subsequent process section of strip product processing, and the thickness of the rolled strip is relatively thin. If the rolling process parameters are set unreasonably during the cold rolling production process, it is easy to cause wave-shaped defects in the strip. , if the wave-shaped defects pr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/48G06F17/50
CPCB21B37/48G06F30/17
Inventor 邢德茂黄文铭张本龙黄荣林郭亚鑫
Owner BAOSTEEL ZHANJIANG IRON & STEEL CO LTD
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