Intelligent judgment and disposal method of continuous casting cut-off accident

A disposal method and a technology of intelligent judgment, applied in the field of steel continuous casting, can solve problems such as accident expansion, and achieve the effect of improving the level of automation and improving the labor efficiency of personnel

Active Publication Date: 2019-06-07
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it solves the hidden danger of the failure to deal with the outage accident when there is no one on duty at the continuous casting pouring site, resulting in the expansion of the accident.

Method used

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  • Intelligent judgment and disposal method of continuous casting cut-off accident
  • Intelligent judgment and disposal method of continuous casting cut-off accident
  • Intelligent judgment and disposal method of continuous casting cut-off accident

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Embodiment Construction

[0027] In this example, the casting machine state has 5 working modes: "preparation", "uploading", "holding", "pouring" and "tail billet", among which the mode of "pouring" is the normal working mode;

[0028] There are three control modes of liquid level control: "automatic", "manual" and "semi-automatic", among which the "automatic" mode is the normal control mode;

[0029] The allowable minimum casting speed value set by the process is 0.6m / min;

[0030] The height range of molten steel in the normal working mold is 860mm to 720mm;

[0031] An intelligent judgment and disposal method for continuous casting outage accidents, which includes three parts: the first stage of automatic monitoring of casting machine production status, the second stage of process data processing, and the third stage of automatic disposal of outage accidents. It is characterized in that the method comprises the following steps:

[0032] 1. Automatic monitoring stage of casting machine production s...

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Abstract

The invention relates to an intelligent judgment and disposal method of a continuous casting cut-off accident. The intelligent judgment and disposal method of the continuous casting cut-off accident comprises the steps that (1) the production state of a continuous casting machine is automatically monitored, and relevant technology data is collected; (2) the collected technology data is judged; and(3) a cut-off accident is automatically processed, specifically, 1, after the cut-off in the field is accurately determined, a sound and light alarm signal is immediately issued to remind operation staff in the field to enter the field; 2, an emergent closing signal of a flow control mechanism in the field is output, and the flow control mechanism is emergently closed; 3, a production line lengthtracking value L1 and a current real-time production line length tracking value L2 when the cut-off accident occurs are collected; 4, a difference value L of L2 and L1 is calculated; and 5, a tail blank is placed on the lower edge of a submersed nozzle side hole, the technology length value is set to be L3, if L+(the crystallizer length-Y1)=L3, then a machine stopping order of the casting machineis issued, and automatic disposal of the cut-off accident is stopped. According to the intelligent judgment and disposal method, the potential danger that the cut-off accident occurs when the castingsite is unattended is avoided.

Description

Technical field: [0001] The invention relates to an intelligent judgment and disposal method for a continuous casting outage accident, which belongs to the technical field of iron and steel continuous casting. Background technique: [0002] In the iron and steel production process, the so-called continuous casting means that the molten steel in the large ladle is injected into the tundish, and then the molten steel in the tundish is continuously injected into the mold, and the slab initially formed in the mold (there is still a large amount of liquid inside) Molten steel), after exiting from the lower port of the crystallizer, is continuously cooled and formed by secondary cooling, thereby forming a continuous slab pulling process. Due to various reasons, if the molten steel injected from the tundish to the mold is interrupted abnormally, the entire continuous casting process will be interrupted. This abnormal production accident is called a "cut-off" accident in the continu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/18
Inventor 邹世文李云刚夏建超曾昌富郑雷
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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