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Continuous casting bleed-out accident automatic disposal method based on liquid level automatic control

A technology for automatic liquid level control and disposal method, 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 achieves the effect of eliminating important restrictive factors.

Active Publication Date: 2018-12-07
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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  • Continuous casting bleed-out accident automatic disposal method based on liquid level automatic control
  • Continuous casting bleed-out accident automatic disposal method based on liquid level automatic control
  • Continuous casting bleed-out accident automatic disposal method based on liquid level automatic control

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Embodiment 1

[0032] Example 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] 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 allowab...

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Abstract

The invention relates to a continuous casting bleed-out accident automatic disposal method based on liquid level automatic control. The method is characterized by comprising the following steps of 1,automatic monitoring and precise judging of bleed-out accidents; 1.1, monitoring before triggering of the bleed-out accidents; 1.2, judging of the bleed-out accidents based on liquid level control; and 2, automatic disposal after the bleed-out accidents. When the bleed-out accidents happen, the main phenomenon is that as a shell of a slab behind a crystallizer is torn, a lot of molten steel leaksquickly, so that the molten steel liquid level in the crystallizer is decreased quickly. According to the technical scheme, whether the bleed-out accidents happen or not is judged accurately by comparing the specific value of the liquid decreasing speed and the normal pulling rate and associate recognition with key factors such as a lower limiting value of the liquid level of the crystallizer skillfully, and the bleed-out accidents and abnormal accidents in other crystallizers are differentiated precisely.

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 Applications(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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