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Automatic treatment method for continuous casting steel breakout accident based on liquid level automatic control

A liquid level automatic control and liquid level control technology, which is applied in the continuous casting process field of the metallurgical industry, can solve the problems such as the failure of automatic identification and automatic disposal of steel breakout accidents, and achieve the effect of improving the labor efficiency of personnel and the level of automation.

Active Publication Date: 2021-05-07
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Claims
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Problems solved by technology

[0006] The present invention aims at the technical problems existing in the prior art, and provides an automatic disposal method for continuous casting steel breakout accidents based on liquid level automatic control. To solve the problem that steel accidents cannot be automatically identified and disposed of automatically, a method for automatic identification and automatic disposal of continuous casting steel breakout accidents based on liquid level automatic control is provided

Method used

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  • Automatic treatment method for continuous casting steel breakout accident based on liquid level automatic control
  • Automatic treatment method for continuous casting steel breakout accident based on liquid level automatic control
  • Automatic treatment method for continuous casting steel breakout accident based on liquid level automatic control

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Embodiment 1

[0032] Embodiment 1: see figure 1, a continuous casting breakout accident automatic disposal technology based on liquid level automatic control, the method comprises the following steps:

[0033] Step 1) automatic monitoring and accurate judgment of steel breakout accidents;

[0034] 1.1 Monitoring before the steel breakout accident is triggered

[0035] 1.1.1 Collect the working mode of the casting machine. In this example, the continuous casting machine has five working modes: "uploading", "maintaining", "pouring", "tail billet" and "maintenance". Confirm that the casting machine is in the normal "pouring" state model;

[0036] 1.1.2 Collect crystallizer liquid level control parameters, and confirm that the crystallizer liquid level control mode is in the normal "automatic" working state;

[0037] 1.1.3 Collect casting machine casting speed of 1.2m / min and confirm that it is greater than the minimum normal working minimum casting speed set in this example of 0.6m / min (the...

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Abstract

The present invention relates to an automatic treatment method for continuous casting steel breakout accidents based on liquid level automatic control, characterized in that the processing method includes the following steps: 1. Automatic monitoring and accurate judgment of steel breakout accidents; 1.1 Before the steel breakout accident is triggered 1.2 Judgment of steel breakout accidents based on liquid level control; 2. Automatic disposal of steel breakout accidents. When a steel breakout accident occurs, the main phenomenon is that the shell of the slab after leaving the mold is torn, and a large amount of molten steel leaks out rapidly, causing the liquid level of molten steel in the mold to drop rapidly. This technical solution accurately judges whether the steel breakout accident has been completed by ingeniously comparing the ratio of the liquid level drop rate and the normal casting speed when a steel breakout accident occurs in continuous casting, and the correlation identification with key factors such as the lower limit of the mold liquid level. occur, and accurately distinguish breakout accidents from other abnormal accidents in the mold.

Description

technical field [0001] The invention relates to a method, in particular to an automatic disposal method for continuous casting breakout accidents based on liquid level automatic control, and belongs to the technical field of continuous casting technology in the metallurgical industry. Background technique [0002] In the continuous casting production process, the continuous casting steel breakout accident refers to the slab initially formed in the crystallizer (with a large amount of liquid steel inside), after going out from the lower port of the crystallizer, due to various reasons, the slab shell ruptures, A production accident in which high-temperature liquid steel rapidly leaks from the billet shell. Continuous casting breakout accident is the most serious production accident in continuous casting production. Every steel breakout will interrupt the continuous casting production, resulting in serious damage to the equipment and replacement, affecting the production time...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/18B22D11/20
CPCB22D11/181B22D11/201
Inventor 邹世文于小春夏建超郑雷曾昌富谯林
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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