Dynamic substitution regulating method for excessive bending of working roll of cold rolling mill

A technology of work roll bending and adjustment method, which is applied in the field of cold-rolled strip steel

Inactive Publication Date: 2011-09-07
NORTHEASTERN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For general symmetrical shape defects, work roll bending can play a good shape control effect, however, when there are large symmetrical shape defects in incoming strip or on-line rolling The symmetrical plate shape defect has not been completely eliminated, and the bending of the work roll has reached the adjustment limit

Method used

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  • Dynamic substitution regulating method for excessive bending of working roll of cold rolling mill
  • Dynamic substitution regulating method for excessive bending of working roll of cold rolling mill
  • Dynamic substitution regulating method for excessive bending of working roll of cold rolling mill

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Embodiment Construction

[0096] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0097] This embodiment discloses the dynamic adjustment processing process of the work roll bending overrun of a 1250 single-stand six-high reversing cold rolling mill. Taking the adjustment of the work roll positive roll overrun as an example, the replacement actuator is the intermediate roll bender. The control mode is the first one, and the final output of the intermediate roller does not exceed the limit. The shape adjustment mechanism includes roll tilting, positive / negative bending of work rolls, positive bending of intermediate rolls and lateral movement of intermediate rolls. The main control parameters and rolling parameters are shown in the table below.

[0098] Table 1 main parameters

[0099]

[0100] A dynamic alternative adjustment method for work roll bending overrun in a cold rolling mill, comprising the following steps: figure 2 a...

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Abstract

The invention discloses a dynamic substitution regulating method for the excessive bending of the working roll of a cold rolling mill, which belongs to the technical field of cold rolled steel strips. The method comprises the following steps: determining parameters in a plate profile regulating efficiency coefficient matrix; determining an execution mechanism for realizing substitution regulation; 3, computing the regulation amount of every plate profile regulating mechanism; 4, making two substituting working roll bending control modes; 5, computing the bending of the working roll, the translation of an intermediate roll, the bending of the intermediate roll, and the output of a rolling mill inclination regulating mechanism in one substituting mode; and 6, computing the bending of the working roll, the translation of the intermediate roll, the bending of the intermediate roll, and the output of the rolling mill inclination regulating mechanism in the other substituting mode. The method has the advantages of relieving the condition that the bending of the working roll is always in a fully-loaded state when a strip with bigger symmetric plate profile defects is rolled, along with high computing precision, high generality, high plate profile control precision and high system running stability.

Description

technical field [0001] The invention belongs to the technical field of cold-rolled steel strips, and in particular relates to a dynamic replacement adjustment method for overrunning of work rolls in a cold-rolling mill. Background technique [0002] In cold-rolled strip production, the shape quality is crucial to the product. With the continuous development of industries such as automobiles and household appliances, while the demand for cold-rolled strip steel continues to increase, the shape quality of cold-rolled strip steel is also required to be higher and higher. The UCM mill is equipped with shape adjustment mechanisms such as work roll bending, intermediate roll bending, roll tilting, intermediate roll traversing, and roll cooling in sections. For the production of cold-rolled strip steel, the effective control algorithm mainly depends on the accurate mathematical model. Therefore, it is of great significance to formulate the control models of each flatness adjustmen...

Claims

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Application Information

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IPC IPC(8): B21B37/28
Inventor 张殿华李旭王鹏飞孙杰
Owner NORTHEASTERN UNIV
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