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Automatic evaluation method and system for width quality of hot-rolled strip steel

A technology of hot-rolled strip and evaluation method, which is applied in metal rolling, metal rolling, rolling mill control devices, etc., can solve the problems of easy missed inspection, high labor cost, low accuracy rate, etc., so as to reduce the missed inspection rate. , the effect of improving labor efficiency and liberating manpower

Active Publication Date: 2020-04-28
UNIV OF SCI & TECH BEIJING
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  • Application Information

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Problems solved by technology

[0011] The technical problem to be solved in the present invention is to provide an automatic evaluation method and system for the width and quality of hot-rolled strip steel, so as to solve the problems of high labor cost, low accuracy rate and easy occurrence of missing detection in existing detection methods

Method used

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  • Automatic evaluation method and system for width quality of hot-rolled strip steel
  • Automatic evaluation method and system for width quality of hot-rolled strip steel
  • Automatic evaluation method and system for width quality of hot-rolled strip steel

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no. 1 example

[0065] see Figure 1 to Figure 2 , the present embodiment provides a method for automatically evaluating the width quality of hot-rolled strip steel, and the method for automatically evaluating the width quality of hot-rolled strip steel includes:

[0066] S101, collecting the first width curve measured by the multifunctional instrument and the second width curve measured by the width measuring instrument; wherein, the multifunctional instrument is set at the exit of the finishing stand, and the width measuring instrument is set at the coiling entrance;

[0067] It should be noted that the acquisition method of the width of the hot-rolled strip steel by the multi-function instrument and the width measuring instrument is periodic sampling, and the width measurement value is recorded every 1m through time-length sequence conversion, and the obtained measurement data Save according to the preset format.

[0068] S102, based on the coefficient of thermal expansion of the strip fi...

no. 2 example

[0108] This embodiment provides an automatic evaluation system for the width and quality of hot-rolled strip steel. The automatic evaluation system for the width and quality of hot-rolled strip steel includes:

[0109] The strip width curve acquisition module is used to collect the first width curve measured by the multifunctional instrument and the second width curve measured by the width measuring instrument; wherein, the multifunctional instrument is arranged at the exit of the finishing stand, and the The width measuring instrument is set at the coiling entrance;

[0110] A curve conversion module, configured to convert the width value in the second width curve into a theoretical width in a finish rolling state based on the coefficient of thermal expansion of the strip finish rolling area and the coiling area, to obtain a third width curve;

[0111] a curve recombination module, configured to recombine the first width curve and the third width curve to obtain a strip width...

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Abstract

The invention provides an automatic evaluation method and system for the width quality of hot-rolled strip steel. The method comprises the steps of collecting a first width curve measured by a multifunctional instrument and a second width curve measured by a width measuring instrument, wherein the multifunctional instrument is arranged at an outlet of a finish rolling tail rack, and the width gauge is arranged at a coiling inlet; converting a width value in the second width curve into a theoretical width in a finish rolling state based on thermal expansion coefficients of a finish rolling areaand a coiling area of the strip steel to obtain a third width curve; recombining the first width curve and the third width curve to obtain a strip steel width curve; and analyzing the strip steel width curve by utilizing a preset strip steel width quality judgment system to obtain a strip steel width quality judgment result. According to the method, the width quality problem caused by process defects can be discovered, the influence of instrument distortion on width curve identification is eliminated, manpower can be liberated, the efficiency is improved, and the omission ratio is reduced.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to an automatic evaluation method and system for the width and quality of hot-rolled strip steel. Background technique [0002] Strip steel is one of the main products of the rolling line, and its application fields are very wide. Width accuracy is an important index to measure the quality of hot strip products. In the production process of hot-rolled strip steel, it is usually hoped that the width of the strip steel after rolling reaches the target value, and the width along the entire length of the strip steel must be within the allowable production error range. Strip rolled parts with high width precision and high yield can meet the requirements of different users. [0003] The main influencing factors of abnormal width include: abnormal incoming materials, poor instrument detection accuracy, improper operation intervention, poor model accuracy, poor equipment accuracy, abno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06B21B38/04B21B37/22
CPCG06Q10/06395B21B37/22B21B38/04Y02P90/30
Inventor 邵健李天伦张爱斌何安瑞
Owner UNIV OF SCI & TECH BEIJING
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