Method for predicting steel plate thickness during rolling process

A technology of rolling process and steel plate, applied in the field of predicting the thickness of steel plate, which can solve the problems of inconvenience and low precision

Inactive Publication Date: 2004-11-17
NORTHEASTERN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects of low accuracy and inconvenience of the traditional method, the present invention provides a method for predicting the thickness of the steel plate during the rolling process, the purpose of which is to improve the accuracy of the thickness prediction and simplify the measurement method, thereby improving the thickness control accuracy and reducing the measurement time

Method used

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  • Method for predicting steel plate thickness during rolling process
  • Method for predicting steel plate thickness during rolling process
  • Method for predicting steel plate thickness during rolling process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0121] 1. Select a set of medium and heavy plate rolling mills, and use the influence function method to calculate the influence of different factors on the elastic deformation of the roll system.

[0122] Among them, Table 1 is the parameters of the plate mill.

[0123] Table 1 Calculation of initial conditions

[0124] Device name Parameter Device name Parameter

[0125] Work roll diameter / mm 900~1100 Support roll crown / um -200~200

[0126] Support roll diameter / mm 1900~2100 Roll body length / mm 3400

[0127] Work roll crown / um -300~300 Press center distance / mm 4800

[0128] Let the radii of the work rolls be equal to 450mm, 470mm, 490mm, 510mm, 530mm, and 550mm respectively; let the radii of the support rolls be equal to 950mm, 970mm, 1010mm, 1030mm, and 1050mm; ; Let the crown of the work roll be -0.3mm, -0.2mm, -0.1mm, 0mm, 0.1mm, 0.2mm respectively; let the crown of the backup roll be -0.3mm, -0.2mm, -0.1mm, 0mm, 0.1 mm, 0.2mm; this gives 6...

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Abstract

The invention is a method for predicting the thickness of steel board online in process of rolling. The method includes calculating the affection to the roller bounce by the roller group elastic deformation, measuring the elastic deformation of roller torii and the related mechanical parts, calculating the roller's bounce, predicting the thickness of the steel board and eliminating the affection of elastic bounce model zero shift to the prediction. The invention can predict the thickness of the steel board with high precision, stably and quickly, provide necessary information for automatic and manual interference.

Description

technical field [0001] The invention belongs to the technical field of rolling, in particular to a method for predicting the thickness of a steel plate during rolling. Background technique [0002] At present, most of the medium and heavy plate rolling mills in China are not equipped with online thickness gauges in order to save costs when building new rolling mills or renovating rolling mills. For the medium and heavy plate rolling mills where the thickness gauge has been installed, due to the influence of the pusher of the rolling mill, the installation location is relatively far from the rolling mill, so it is impossible to measure the steel plate thickness of each pass in real time. At the same time, the thickness of the medium and heavy plate rolling process varies widely (generally, the thickness of the billet is about 200mm, and the thickness of the finished product is between 6mm and 50mm), and the measuring range of the thickness gauge is generally 6mm to 50mm, so t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/08
Inventor 胡贤磊王国栋刘相华王昭东王君杨红何纯玉
Owner NORTHEASTERN UNIV
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