Secondary control rolling force forecasting method of hot mill

A technology of secondary control and rolling force, applied in the direction of rolling force/roll gap control, etc., to achieve the effect of high work efficiency

Inactive Publication Date: 2010-08-11
CHINA NON-FERROUS METALS PROCESSING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing situation cannot meet this requirement, so in the face of such a complex system, it is of great significance to design a simple and effective rolling force prediction method

Method used

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  • Secondary control rolling force forecasting method of hot mill
  • Secondary control rolling force forecasting method of hot mill
  • Secondary control rolling force forecasting method of hot mill

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Experimental program
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Embodiment Construction

[0023] figure 1 It is a schematic diagram of the rolling force prediction method of the present invention. First, set the roll gap under the forecasted value of the initial rolling force, roll, and calculate the deviation between the actual exit thickness of the current material and the set target value according to the exit thickness of the strip at the last pass of rolling; These deviations are allocated to each pass in proportion, and the adjustment amount of rolling force on each pass is calculated to obtain a new forecast value of rolling force; then, according to the rolling results under the new forecast value of rolling force, further determine the rolling force. The amount of adjustment of the braking force, such a cycle makes the final outlet thickness meet the production requirements through a limited number of adjustments.

[0024] figure 2 It is a schematic diagram of the thickness difference distribution rate curve of each pass. The figure shows the distribut...

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Abstract

The invention provides a secondary control rolling force forecasting method of a hot mill, which is suitable for various objects to supply material and various regulations to roll, utilizes the historical data of the rolling process to forecast the rolling force of each pass of subsequent supplied material. For the rolling of the same material and same regulation, the forecasting method is designed on the basis of the rolling result of a previous strip, i.e. the deviate of the practical outlet thickness and the set target outlet thickness of the strip last pass. In the method, thickness difference is successively distributed on each pass according to certain group of weight coefficients, and then, the adjusting amount of the rolling force of each pass is determined; deviation is eliminated by adjusting the rolling force predicted value of all passes; after adjusted for limited times, reasonable rolling force predicted value is given. The method of the invention simply and effectively solves the problem of setting rolling force in a secondary control system under the existing rolling condition and level.

Description

technical field [0001] The invention relates to a method for forecasting the rolling force of the secondary control of a hot rolling mill, which is used to solve the problem of setting the rolling force in the rolling secondary control system. Background technique [0002] In the metal processing industry, at present, in the production of aluminum hot rolling mills in many manufacturers, under the given regulations and given the thickness reduction of each pass, the rolling force prediction value is either not set, or it is given by manual experience or Set by the rolling force model, these values ​​are inaccurate, resulting in great difficulty and pressure for the first-level thickness control, the rolled strip cannot reach the preset result, and the quality of the product cannot be obtained. ensure. [0003] In fact, in order to achieve the preset results, in modern rolling, several aspects of cooperation are needed, namely, the rolled piece model, such as deformation res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/58
Inventor 黄秀琴李献国贾建昇徐刚王震宇张宏周申崔光现
Owner CHINA NON-FERROUS METALS PROCESSING TECH CO LTD
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