Tandem-mill strip-steel vibration marks detection method

A detection method and vibration pattern technology, applied in metal rolling, length measuring device, metal rolling, etc., can solve problems such as unfavorable production site promotion, vibration pattern early warning system has not been seen, etc.

Active Publication Date: 2009-06-10
SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the online vibration systems reported, most are used for vertical vibration monitoring and alarming of rolling mills; or for research systems, a large number of

Method used

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  • Tandem-mill strip-steel vibration marks detection method
  • Tandem-mill strip-steel vibration marks detection method
  • Tandem-mill strip-steel vibration marks detection method

Examples

Experimental program
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Effect test

Embodiment Construction

[0034] As shown in the figure, the strip steel vibration mark detection device 3 carries out synchronous collection of the rolling mill vibration signal from the rolling mill 1 and the process signals such as the speed and steel coil from the rolling mill control system 2, and detects the strip steel vibration mark according to the following method And signal processing, and realize vibration pattern early warning.

[0035] Step 1: For each set of original signal and rolling speed, divide the original signal into segments according to the speed range, and the segmentation is as follows:

[0036] Rotating speed

frequency band <100rpm

100-200rpm

200-300rpm

300-400rpm

400-500rpm

>500rpm

low frequency f 00 ~ f 02 f 01 ~ f 03 f 01 ~ f 04 f 01 ~ f 05 f 01 ~ f 06 f 01 ~ f 07 IF f 10 ~ f 12 f 11 ~ f 13 f 11 ~ f 14 f 11 ~ f 15 f 11 ~ f 16 f 11 ~ f 17 high frequency f 20 ~ f...

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Abstract

The present invention discloses a method for detecting strip steel chatter marks of a tandem mill. The method synchronously acquires each technical parameter of the tandem mill and the information of rotating speed, vibration, steel rolls and so on in the operation process of the tandem mill. The early warning policy for processing the information by different frequency bands is adopted. The method determines the frequency band range of dynamic wave filtering according to the real-time speed of the tandem mill so as to determine wave filtering results. The integrated early warning of the chatter marks is generated corresponding to roll diameter parameters used for production, and the results of the early warning are explained. The method directly monitors the chatter marks, and gives out early warnings for the chatter marks generated by various reasons, so that the batch production of disqualified products is avoided. The method also can correspondingly search steel rolls with chatter marks according to the information of the steel rolls. The method plays an active role in improving product quality, reducing roll surface wear and improving production efficiency.

Description

technical field [0001] The invention relates to the monitoring of the production process of strip steel in metallurgical enterprises, in particular to a method for detecting vibration marks of strip steel in continuous rolling mills. Through the acquisition of dynamic parameters such as rolling mill vibration and speed, the monitoring and early warning of strip steel vibration marks is realized. Background technique [0002] Vibration marks are a common problem in strip steel production and a technical problem that plagues iron and steel enterprises worldwide. It refers to the light and dark stripes formed on the surface of strip steel products. It not only affects the quality of strip steel products, but also It will cause broken belts or equipment damage accidents, threaten production safety and cause huge economic losses. Therefore, the problem of vibration marks is an urgent problem to be solved in steel rolling production. Many scholars and experts at home and abroad ...

Claims

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Application Information

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IPC IPC(8): B21B37/28B21B38/02
Inventor 万年红
Owner SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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