Online detection method for deviation of hot-rolled strip steel

A detection method, hot-rolled steel strip technology, applied in image data processing, instruments, calculations, etc., can solve problems such as frame drift, edge damage, stacking steel accidents, etc., to achieve the effect of ensuring stability and high detection accuracy

Pending Publication Date: 2021-05-14
北京科技大学设计研究院有限公司
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Problems solved by technology

The deviation between the strip steel racks is the defect of dimensional accuracy and internal stress deviation caused by the uneven three-dimensional deformation of the metal along the width direction of the rolled piece, which will not only cause quality problems of the finished product, but also affect the continuity and stability of the entire rolling process
[0005] The deviation of the strip will cause the fluctuation of the wedge index of the strip. During the thin-gauge rolling process, it is very easy to produce waves between the stands, which will affec

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  • Online detection method for deviation of hot-rolled strip steel
  • Online detection method for deviation of hot-rolled strip steel
  • Online detection method for deviation of hot-rolled strip steel

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[0053]In order to make the technical problems, technical solutions and advantages to solve the present invention more clearly, and will be described in detail below with reference to the accompanying drawings and specific examples.

[0054]The present invention provides an online detection method of a hot rolled strip running.

[0055]This method adopts machine vision technology, using a binocular array camera to perform real-time collections of steel images, calculate the real-time width and running pair of strip steel, and effectively eliminate the impact of the active set angle swing on the test results, and finally increase Camera error compensation guarantees accuracy.

[0056]Specifically, the steps are as follows:

[0057]S1: Distortion correction and calibration to the camera:

[0058]Optimization of the upper array camera distortion correction algorithm, the line array camera distortion correction model is obtained, and the wire array camera is distorted by black and white stripe pattern,...

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Abstract

The invention provides an online detection method for deviation of hot-rolled strip steel, and belongs to the technical field of plate and strip rolling automation. According to the method, a machine vision technology is adopted, a binocular linear array camera is used for collecting strip steel images in real time, the real-time width and deviation amount of the strip steel are calculated through means such as edge detection, the influence of loop angle swing on a detection result is effectively eliminated, and finally camera error compensation is added to guarantee the detection precision. According to the strip steel deviation amount detected through the method, the deviation detection precision of the strip steel can be improved to the millimeter level, and a reliable basis is provided for follow-up strip steel deviation control.

Description

technical field [0001] The invention relates to the technical field of plate and strip rolling automation, in particular to an online detection method for hot-rolled strip deviation. Background technique [0002] As an indispensable raw material, plate and strip products are used in various fields such as industry, agriculture, commerce, and manufacturing, such as automobile manufacturing, agricultural machinery, electronic products, food packaging, and equipment. Provides great convenience. [0003] At present, my country's steel production ranks first, but there is a big problem of excess capacity of ordinary steel, high-grade alloy steel, fatigue-resistant high-strength steel, high-temperature-resistant, radiation-resistant steel and special steel with high added value and high technology content China's high-end steel products are heavily dependent on imports. The reason is that the plate shape problem has become one of the main problems that plague the production effic...

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Application Information

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IPC IPC(8): G06T7/00G06T7/13G06T7/80G06T5/00
CPCG06T5/006G06T7/0008G06T2207/10004G06T2207/30136G06T7/13G06T7/80
Inventor 刘洋王晓晨杨荃闫书宗徐冬何海楠
Owner 北京科技大学设计研究院有限公司
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