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Method for controlling plate sizes of middle or thin plate planks in continuous casting and rolling processes

A medium-thin slab continuous casting and comprehensive control technology, which is applied in metal rolling and other directions, can solve the problem that the interference cannot be eliminated, the strip shape and thickness control cannot be fully coupled, and it is difficult to achieve flatness, convexity and edge drop Comprehensive control and other issues

Inactive Publication Date: 2003-09-03
ANGANG STEEL CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. It is difficult to realize the comprehensive control of flatness, convexity and edge drop;
[0004] 2. The control of strip shape and thickness cannot be fully coupled, and the interference between them has not been eliminated;
[0005] 3. After finishing rolling, the shape change of the strip steel in the process of laminar cooling, air cooling and coiling cannot be quantified into the control model to automatically realize its compensation control

Method used

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  • Method for controlling plate sizes of middle or thin plate planks in continuous casting and rolling processes
  • Method for controlling plate sizes of middle or thin plate planks in continuous casting and rolling processes
  • Method for controlling plate sizes of middle or thin plate planks in continuous casting and rolling processes

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Embodiment Construction

[0071] Such as figure 1 Shown, the medium-thin slab continuous casting and rolling strip shape comprehensive control method of the present invention is characterized in that:

[0072] 1) Using new roll technology, through the roll shape design of the work roll and back-up roll of the finishing mill, the roll shape curve of the work roll and the back-up roll are processed by a CNC grinder. For the roll surface length of 1500mm to 2600mm, the diameter The roll shape of the working roll of 500mm-1100mm, that is, the diameter difference in the roll surface is 0-0.60mm, and the roll shape of the backup roll with the roll surface length of 1200mm-2300mm and the diameter of 1200mm-1600mm, that is, the diameter difference of the roll surface 0mm ~ 1.00mm.

[0073] 2) Calculate the bending force of the work roll and the position of the work roll through the secondary computer, and the control system designs and adjusts the bending force and the position of the work roll according to t...

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Abstract

An integrated control method for the shape of medium-thin plate in conticasting and tandem rolling includes finishing shape setting control model, automatic thickness control AGC, the affection of laminar flow cooling to plate shape, and use of new roller technique. The roller bending force and the positions of serial rollers are set up and regulated by plate shape controlling model, which consists of presetting control model, dynamic control model and plate shape and thickness decoupling model.

Description

technical field [0001] The invention belongs to the technical field of hot-rolled strip steel production, in particular to a comprehensive control method for continuous casting and rolling of medium and thin slabs, which is suitable for the strip shape control of hot-rolled strip steel rolling. Background technique [0002] The factors affecting the finished strip shape of hot-rolled strip steel are extremely complex. Therefore, the control of strip shape is very difficult and involves a wide range, including process parameters such as the optimization design and matching process of the roll shape of the finishing mill, the original roll shape accuracy of the finishing mill, etc. It also includes dynamic parameters such as the uniformity of cooling of the work rolls of the finishing mill, the uniformity of cooling water distribution between the stands, the angle of side water spraying between the stands of the finishing mill, the pressure and other dynamic parameters; Shape ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/46
Inventor 黄浩东赵林何安瑞杨旭杨荃沙孝春吴胜田张海波马普生郭宝安徐延强王霆陈百红郭晓波刘志刚董浩然郑方坤李庆贤
Owner ANGANG STEEL CO LTD
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