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Method for optimizing cold continuous mill plate shape target curve

A technology of target curve and optimization method, applied in the field of steel rolling, to improve quality and output, and solve the effect of unit deviation

Active Publication Date: 2015-07-15
SHOUGANG CORPORATION
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  • Abstract
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Problems solved by technology

[0005] The method for optimizing the flatness target curve of the cold tandem mill provided by the present invention adopts the control mode of the double-sided wave for the flatness target curve, and further optimizes the value range of the parameters of the flatness target curve, by optimizing the value range of the parameter The optimization of the system effectively solves the problems of unit deviation and improves the quality and output of strip steel

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  • Method for optimizing cold continuous mill plate shape target curve
  • Method for optimizing cold continuous mill plate shape target curve
  • Method for optimizing cold continuous mill plate shape target curve

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Embodiment Construction

[0008] see figure 1 , starting from the stability analysis of strip 1 running on the rollers in the continuous annealing furnace, analyzing the influence of different wave shapes on the deviation of the unit, and then proposing the material standard for the pickling strip shape of the follow-up unit. Firstly, the model of strip steel 1 and continuous annealing furnace rollers is simplified, and the force condition of strip steel 1 is analyzed, see figure 1 , assuming that the steel strip 1 is running stably at this time, without deviation and buckling, the force analysis is carried out on it, as shown in the figure, it is subjected to the front tension T f , back tension T b And the role of friction force f, according to the force balance, the following formula:

[0009] T f -T b + f = 0 (1)

[0010] The direction of the friction force f in the formula (1) is related to the control of the tension in the furnace. When the furnace roller plays an active role, the friction f...

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Abstract

The invention relates to the technical field of steel rolling, in particular to a method for optimizing a cold continuous mill plate shape target curve. The method comprises the steps that a double-side-wave control mode is adopted by the plate shape target curve; the plate shape target curve is optimized according to the formula which can be found in the specifications, wherein x'=2xB, x''=(x-x0)*(b2-x0) and a formula can be found in the specifications. The method for optimizing the cold continuous mill plate shape target curve effectively solves the problems of deviation of a unit and the like and the quality and yield of band steel are improved.

Description

technical field [0001] The invention relates to the technical field of steel rolling, in particular to a method for optimizing the flatness target curve of a cold tandem rolling mill. Background technique [0002] Strip steel is the main product of the iron and steel industry, and its production technology level and quality precision level mark the technological development level of a country's iron and steel industry. With its excellent machinability, cold-rolled steel sheets are widely used in various major sectors of the national economy such as automobiles, home appliances, light industry, and construction, and become an important industrial raw material. For cold-rolled strip steel, crown and flatness are the main objectives of shape control, especially flatness, which has a direct relationship with the appearance and use effect of the final product. For the pickling process, the shape quality of the strip needs to meet the shape quality requirements of the final produ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/28
Inventor 于孟刘旭明文杰唐伟李飞郑晓飞张喜榜刘学良
Owner SHOUGANG CORPORATION