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Bleed-out forecasting method and system based on least squares

A technology of least squares and steel breakout, which is applied in the field of least squares-based steel breakout prediction method and system, and can solve problems such as early warning of steel breakout

Active Publication Date: 2014-03-19
CONTINUOUS CASTING TECH ENG OF CHINA
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Problems solved by technology

[0015] In view of the above problems, the purpose of the present invention is to provide a method and system for steel breakout prediction based on least squares, to solve the problem that the characteristics of the temperature curve during bonding can be captured at the initial stage of bonding, so that the problem of early warning of steel breakout

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[0055] In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that these embodiments may be practiced without these specific details.

[0056] Known from the foregoing, the slab mold breakout prediction is of great significance in the slab continuous casting production. As the slab pulling speed is getting higher and higher, the breakout forecast requires the alarm time to be earlier and more timely, so as to allow sufficient reaction time. Breakout forecasting should also consider the timeliness of the alarm time while focusing on the accuracy. The present invention proposes a new breakout prediction method, which uses the least squares method to fit the collected temperature data, calculates the size of the characteristic value, and judges the difference between the slab and the Whether there is bonding between the copper plates. ...

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Abstract

The invention provides a bleed-out forecasting method and system based on least squares. The method includes the steps that temperature data of all sampling points on copper plates are obtained through thermocouples arranged on the slab crystallizer copper plates, and the temperature data are input to a normatron in real time; the normatron constructs a temperature time sequence according to the received current temperature data and the received historical temperature data of each sampling point; least square fit is performed on each temperature time sequence, a fitted curve of the temperature time sequence is obtained, the fitted curve is a quadratic curve, and a characteristic value of the temperature time sequence is obtained according to the quadratic curve; according to the characteristic value of the temperature time sequence and a preset threshold, whether the sampling points on the copper plates adhere to one another or not is judged, and an alarm is given. With the bleed-out forecasting method and system based on least squares, the characteristics of the temperature curve caught when adhering occurs in the early stage can be obtained, and therefore a bleed-out alarm can be given in advance.

Description

technical field [0001] The present invention relates to the technical field of intelligent breakout prediction of slab continuous casting molds in the field of metallurgy, and more specifically relates to a least squares-based breakout prediction method and system. Background technique [0002] Steel breakout accident is a very harmful production accident in continuous casting production. The occurrence of steel breakout accidents will not only affect the continuous casting production, but also seriously damage the crystallizer and roller table, increase the maintenance amount and maintenance cost of continuous casting equipment, cause huge economic losses, and also bring great safety Hidden danger. Especially for the slab continuous casting machine, due to the complex structure of the foot roll and the fan section under the crystallizer, the equipment is expensive, and the replacement takes time, and the loss of steel breakout is large. It is estimated that the economic l...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/16
Inventor 倪赛珍罗佳白居冰蔡娥许军孙丽娟张爱霞吴鹏赵加江
Owner CONTINUOUS CASTING TECH ENG OF CHINA
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