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Roller wear optimization control method for improving quality of band steel

A technology for optimizing control and rolling, applied in the direction of rolling force/roll gap control, general control system, contour control, etc., and can solve problems such as not involving

Inactive Publication Date: 2011-11-09
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the optimization control technology of hot rolling mill roll wear does not involve

Method used

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  • Roller wear optimization control method for improving quality of band steel
  • Roller wear optimization control method for improving quality of band steel
  • Roller wear optimization control method for improving quality of band steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0065] Firstly, the roll wear calculation model of the hot continuous rolling mill (only calculating the wear amount caused by rolling one coil of strip steel) is explained.

[0066] The friction between the work roll and the strip steel and between the work roll and the backup roll will cause the work roll to wear. Wear change is a slowly accumulating process, and its calculation accuracy has an impact on the setting of the plate crown, the control of the flatness of the plate, and the improvement of the surface quality of the strip.

[0067] The wear is divided into two parts: the steady wear area in the middle and the concentrated wear area at the edge. The main reasons for the increased edge wear are the reduction of edge temperature, the enhancement of the load on the edge area and the three-dimensional flow of the rolled metal.

[0068] Such as figure 1 As shown, according to the different contact positions between the strip and the roll, the roll is divided into seven...

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Abstract

The invention relates to a roller wear optimization control method for improving the quality of band steel. The method comprises the following steps of: 1, classifying rollers according to roller materials; 2, acquiring the roller shape and surface temperature data of working rollers of a front rack and a rear rack in more than two rolling periods for different roller materials; 3, performing optimization processing on the acquired data; and 4, performing roller wear computation and optimization control, namely performing the roller wear computation by using optimized wear conversion factors according to different roller classes to realize the optimization control over band steel profiles and roller gaps. In the optimization control method provided by the invention, parameter optimizationis performed according to different roller material types so as to improve the computational accuracy of a roller wear model and further improve band steel profile quality and roller gap control accuracy; moreover, measurement planning and parameter regulation processes are simple, operable and convenient to implement.

Description

technical field [0001] The invention relates to a control method in metallurgical production technology, specifically a roll wear optimization control method, especially a roll wear optimization control method for improving the quality of strip steel. Background technique [0002] In order to improve the strip shape quality, increase productivity and yield, traditional hot continuous rolling mills are generally equipped with a shape control system in the process machine system. Since the wear of the roll cannot be measured online, the flatness control system is calculated by the wear model of the roll. The deviation between the roll wear value calculated by the model and the actual value directly affects the rolling stability and strip shape quality. [0003] In addition, as the roll gap model that directly affects the strip thickness control accuracy, the impact item of roll wear is usually also considered. Generally, the calculated value of the wear model in the flatness ...

Claims

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Application Information

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IPC IPC(8): G05B13/04B21B37/30B21B37/58
Inventor 陈龙夫李维刚朱海华
Owner BAOSHAN IRON & STEEL CO LTD
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