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Detection method of abnormal area of ​​mold copper plate temperature based on cellular automata

A crystallizer copper plate and cellular automaton technology, applied in the field of iron and steel metallurgical continuous casting, can solve the problems of complex heat transfer, increase in false alarms, etc., and achieve the effects of preventing steel breakout, rapid detection and positioning

Inactive Publication Date: 2019-06-14
DALIAN UNIV OF TECH +1
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  • Claims
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Problems solved by technology

However, the heat transfer between the slab and the mold is extremely complicated. Due to factors such as slab shell shrinkage, mold flux melting, mold flux crystallization, and air gaps, it often happens that the temperature in a single area rises or falls for more than 10 seconds, which will lead to the development of this technology. Increased method false positives

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  • Detection method of abnormal area of ​​mold copper plate temperature based on cellular automata
  • Detection method of abnormal area of ​​mold copper plate temperature based on cellular automata
  • Detection method of abnormal area of ​​mold copper plate temperature based on cellular automata

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Embodiment Construction

[0052] The present invention will be further described below in conjunction with the examples, but the present invention is not limited.

[0053] Depend on figure 1 It can be seen that the anomaly detection process of mold copper plate temperature can be divided into the following four parts: crystallizer copper plate visualization, cellular automaton initialization, connected area cell marking and merging, and abnormal cell area boundary detection. The specific steps are as follows:

[0054] The first step, crystallizer copper plate visualization

[0055] figure 2 It is a schematic diagram of copper plate expansion and thermocouple arrangement of wide-face and narrow-face crystallizers. The length of the mold of the continuous casting machine is 900mm, and it is composed of four copper plates, including two wide copper plates and two narrow copper plates, which are the outer arc wide copper plate 1, the first narrow copper plate 2, and the inner arc wide copper plate 3. T...

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Abstract

The invention discloses a method for detecting an abnormal temperature area of ​​a mold copper plate based on a cellular automaton, which belongs to the field of iron and steel metallurgy and mainly solves the problems of difficulty in capturing mold heat transfer anomalies and low efficiency of searching for abnormal area characteristics under severe working conditions. The technical solution of the invention is: (1) visualization of the temperature of the copper plate of the crystallizer; (2) initialization of the cellular automata model; (3) marking and merging of cells in connected areas; (4) detection of boundaries of abnormal cell areas. The present invention combines the cellular automata method with the detection of the temperature abnormal region of the crystallizer, uses the temperature state of the current cell and adjacent cells to judge the connectivity of the region, and obtains it through the initial cell and the termination cell of the connected section of the same label area Area boundaries, quickly distinguish and extract hot spots, cold spot areas and their boundaries when abnormalities such as mold bonding and cracks occur, and provide accurate and reliable image detection methods for breakout prediction, slab longitudinal cracking, corner cracks and other defects prediction.

Description

technical field [0001] The invention relates to a method for detecting an abnormal temperature region of a mold copper plate based on a cellular automaton, and belongs to the technical field of iron and steel metallurgical continuous casting. Background technique [0002] In recent years, with the development of high-efficiency continuous casting technology in my country, excessive steel throughput at high casting speeds has led to a significant increase in the heat load of the mold, and frequent occurrence of defects such as slab bonding and cracks have become a problem that affects the continuous casting process. And the bottleneck of billet quality. The mold is the core component of the continuous casting machine. The water-cooled copper plate of the mold cools the high-temperature molten steel forcibly, so that the liquid steel gradually solidifies to form a billet shell with a certain thickness. important factor for bonding. [0003] With the wide application of comput...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K13/00G01K7/02B22D11/16
CPCG01K7/02G01K13/00B22D11/16
Inventor 王旭东刘宇姚曼
Owner DALIAN UNIV OF TECH