Method for determining closed-loop shape control cycle of cold-rolled strip steel plate

A technology of closed-loop control and steel plate shape, which is applied in the direction of contour control, etc., can solve the problem of poor control effect of strip steel plate shape at export, and achieve the effect of increasing market competitiveness, meeting real-time requirements, and fast response speed

Inactive Publication Date: 2013-11-20
WISDRI ENG & RES INC LTD
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for determining the closed-loop control period of the cold-rolled strip steel plate shape, so as to solve the problem of poor control effect of the exit strip steel plate shape due to improper selection of the shape control period during the production process of the cold-rolled strip steel plate technical issues

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  • Method for determining closed-loop shape control cycle of cold-rolled strip steel plate
  • Method for determining closed-loop shape control cycle of cold-rolled strip steel plate
  • Method for determining closed-loop shape control cycle of cold-rolled strip steel plate

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Embodiment Construction

[0032] The method for determining the closed-loop control cycle of cold-rolled strip steel plate shape provided by the invention, its steps include:

[0033] (1) Determine the type of shape meter configured at the exit of the rolling mill:

[0034] The shape meter model determines two key variables in the determination method of the cold-rolled strip shape control period: the radius R (unit: mm) of the shape roller and the number of times n ( The unit is times / revolution).

[0035] (2) Determine the distance L (unit: mm) from the exit of the rolling mill to the shape meter:

[0036] The distance from the exit of the rolling mill to the shape meter directly affects the transfer time of the strip from the exit of the rolling mill to the shape meter. The larger L is, the greater the time lag of the system is. In the design of rolling mill equipment, the L value should be as small as possible on the basis of considering the limitations of equipment installation and other technol...

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Abstract

The invention discloses a method for determining closed-loop shape control cycle of a cold-rolled strip steel plate. The method includes the steps: (1) determining the distance L from an outlet of a mill to a shape meter; (2) determining the longest single computing time T1 of a shape control system; (3) determining the maximum rolling speed V; (4) determining the longest single action time T2 of an actuating mechanism; and (5) computing the shape control cycle to determine the closed-loop shape control cycle of the cold-rolled strip steel plate. The shortcoming of inherent limitations of a traditional method for determining fixed time span control cycle is overcome, the technical problem of poor shape control effect for an outlet strip steel plate caused by improper selection of shape control cycle can be effectively solved during production of strip steel, the shape control quality of the cold-rolled strip steel can be remarkably improved, and the market competitiveness of cold rolling enterprises is enhanced.

Description

technical field [0001] The invention relates to the technical field of cold-rolled strip shape control technology, in particular to a method for determining a closed-loop control period of cold-rolled strip shape closed-loop control. Background technique [0002] With the rapid development of domestic and foreign strip product manufacturing industries, downstream users have increasingly high requirements for the shape quality of cold-rolled strip products, especially for industries such as high-end automobiles and high-end IT product manufacturing. Therefore, the quality of cold-rolled strip shape has become one of the main technical indicators for evaluating strip products. During the rolling process of cold-rolled strip steel, the strip steel will undergo obvious longitudinal elongation and transverse flow. When the lateral flow of strip steel is large, the longitudinal extension of each strip element in the strip steel transverse direction will be inconsistent, and there...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/28B21B37/38
Inventor 解相朋赵菁李永祝兵权单秉仁
Owner WISDRI ENG & RES INC LTD
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