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A Tensile Stress Dynamic Compensation Method for Improving the Stability of Rolling Process

A rolling process, dynamic compensation technology, applied in metal rolling, metal rolling, manufacturing tools, etc., can solve problems such as strip instability

Active Publication Date: 2019-03-01
BEIJING SHOUGANG AUTOMATION INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the unstable problem of strip steel in non-high-speed steady-state rolling processes such as low-speed rolling, accelerated rolling, and reduced-speed rolling.

Method used

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  • A Tensile Stress Dynamic Compensation Method for Improving the Stability of Rolling Process
  • A Tensile Stress Dynamic Compensation Method for Improving the Stability of Rolling Process
  • A Tensile Stress Dynamic Compensation Method for Improving the Stability of Rolling Process

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Embodiment Construction

[0066] The invention proposes a method for dynamic compensation of tensile stress for improving the stability of rolling process. On the premise that the entire rolling speed range is segmented, the compensation values ​​of the pre-tension stress and post-tension stress of the stand at each speed segment point are calculated, The tension control system calculates the actual required tensile stress compensation value according to the actual rolling speed, and calculates a new tension setting value for tension control to ensure the stability of the rolling process, and is applied to the cold rolling process. Examples are detailed as follows:

[0067] Taking the second stand of a specific tandem cold rolling production line as an example, the whole process of applying a dynamic compensation method for tensile stress to improve the stability of the rolling process will be described in detail below.

[0068] The main parameters of the cold tandem rolling line selected in this examp...

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Abstract

The invention discloses a tensile stress dynamic compensation method for improving the stability in the rolling process, and belongs to the technical field of cold rolling automatic control. The stable rolling process is achieved by conducting dynamic compensation on the front tensile stress and the rear tensile stress of a rack in the whole rolling speed range. The tensile stress dynamic compensation method is characterized in that rolling force is maintained to be stable by compensating the tensile stress in the non-high-speed stable-state rolling process, so that the unstable problem of strip steel in the non-high-speed stable-state rolling process of low-speed rolling, accelerated rolling, decelerated rolling and the like is solved, the production stability of the cold-rolled strip steel is improved, and preconditions are created for controlling the cold-rolled strip steel quality stability and increasing the yield.

Description

technical field [0001] The invention belongs to the technical field of automatic control of cold rolling, and in particular relates to a dynamic compensation method for tensile stress for improving the stability of a rolling process. Background technique [0002] The stability of the cold rolling process is one of the primary pursuit goals in the cold rolling production process. Only when the production process is stable can the normal production rhythm, high production efficiency and stable quality control be guaranteed. There are many factors that affect the stability of the cold rolling production process. Among them, the change of rolling speed, such as low-speed rolling, accelerated rolling, and reduced-speed rolling, is the most prone to production instability. Lead to strip deviation, broken strip, thickness deviation and other quality defects and production failures. However, in the actual production process, the change of rolling speed is an inevitable rolling stat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/48B21B38/06
CPCB21B37/48B21B38/06
Inventor 郭立伟
Owner BEIJING SHOUGANG AUTOMATION INFORMATION TECH
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