Tundish Liquid Level Control Method in Continuous Casting Production Process

A production process and liquid level control technology, applied in the field of iron and steel metallurgy, can solve problems such as unstable liquid level in the tundish, and achieve the effect of stable liquid level

Active Publication Date: 2022-04-08
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for controlling the liquid level of the tundish in the continuous casting production process in order to overcome the problem of unstable tundish liquid level in the process of changing the tundish in the continuous casting production in the prior art, and the method can ensure that the tundish liquid level is The liquid level of the tundish is stable during the tundish, avoiding the adjustment of the casting speed to ensure the liquid level, and providing equipment technical support for the stable quality of the slab

Method used

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  • Tundish Liquid Level Control Method in Continuous Casting Production Process
  • Tundish Liquid Level Control Method in Continuous Casting Production Process

Examples

Experimental program
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Effect test

Embodiment 1

[0039] In this embodiment, a steelmaking plant adopts the method invented by the present technology to produce No. 45 steel with a section of 360mm×450mm.

[0040] The specific design parameters are as follows:

[0041] Continuous casting machine section size S=a*b=360mm×450mm;

[0042] The number of casting streams of the continuous casting machine is N=4 streams;

[0043] Casting speed of continuous casting machine V=0.52m / min;

[0044] The time for casting and changing the bag is T=55s;

[0045] The horizontal cross-sectional size of the buffer package is s=800mm×800mm.

[0046] Calculate the height of the liquid level of the cache bag by the liquid steel balance equation S*N*V*7.2*T / 60=s*h*7.2, that is, (360 / 1000)*(450 / 1000)*4*0.52*7.2* 55 / 60=(800 / 1000)*(800 / 1000)*(h / 1000)*7.2.

[0047] Calculated from the above formula, the liquid level height of the cache bag is h=483mm, that is, the liquid level height of the cache bag should be 480-490mm immediately before changin...

Embodiment 2

[0052] In this embodiment, a steelmaking plant adopts the method invented by the present technology to produce No. 45 steel with a section of 360mm×450mm.

[0053] The specific design parameters are as follows:

[0054] Continuous casting machine section size S=a*b=360mm×450mm;

[0055] The number of casting streams of the continuous casting machine is N=4 streams;

[0056] Casting speed of continuous casting machine V=0.50m / min;

[0057] The time for casting and changing the bag is T=60s;

[0058] The horizontal cross-sectional size of the buffer package is s=800mm×800mm.

[0059] Calculate the height of the liquid level of the cache bag from the liquid steel balance equation S*N*V*7.2*T / 60=s*h*7.2, that is, (360 / 1000)*(450 / 1000)*4*0.50*7.2* 60 / 60=(800 / 1000)*(800 / 1000)*(h / 1000)*7.2.

[0060] Calculated from the above formula, the liquid level height of the cache bag is h=506mm, that is, the liquid level height of the cache bag should be 500-510mm immediately before chang...

Embodiment 3

[0065] In this embodiment, a steelmaking plant adopts the method invented by the present technology to produce No. 45 steel with a section of 360mm×450mm.

[0066] The specific design parameters are as follows:

[0067] Continuous casting machine section size S=a*b=360mm×450mm;

[0068] The number of casting streams of the continuous casting machine is N=4 streams;

[0069] Casting speed of continuous casting machine V=0.52m / min;

[0070] The time for casting and changing the bag is T=60s;

[0071] The horizontal cross-sectional size of the buffer package is s=800mm×800mm.

[0072] Calculate the height of the liquid level of the cache bag by the liquid steel balance equation S*N*V*7.2*T / 60=s*h*7.2, that is, (360 / 1000)*(450 / 1000)*4*0.52*7.2* 60 / 60=(800 / 1000)*(800 / 1000)*(h / 1000)*7.2.

[0073] Calculated from the above formula, the liquid level height of the cache bag is h=527mm, that is, the liquid level height of the cache bag should be 520-530mm immediately before changin...

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Abstract

The invention relates to the field of iron and steel metallurgy, and discloses a method for controlling the liquid level of the tundish in the continuous casting production process. Specifically, the method is to install a buffer bag between the ladle and the tundish to maintain the stability of the liquid level of the tundish during the bag changing process. , the size of the buffer bag is determined according to the section size of the continuous casting machine, the casting flow rate of the continuous casting machine, the casting speed of the continuous casting machine and the time for changing the bag. The technical solution provided by the invention can ensure the stability of the liquid level of the tundish during the change of the bale, avoid the adjustment of the casting speed to ensure the liquid level, and provide equipment technical guarantee for the stable quality of the slab.

Description

technical field [0001] The invention relates to the field of iron and steel metallurgy, in particular to a tundish liquid level control method in the continuous casting production process. Background technique [0002] With the rapid development of society, iron and steel materials are the most widely used metal materials, and their quality performance requirements are getting higher and higher, which puts forward higher requirements for the quality of steel product blanks, including the chemical composition uniformity, purity and Density, etc., and the more important and difficult control technology is quality stability. In the process of mass production, the stability of billet quality can provide basic support for the optimization control of later rolling process and product quality. In the modern iron and steel metallurgy industry, due to the advantages of continuous casting such as high efficiency, greenness, and low cost, the production of many iron and steel products...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/18
CPCB22D11/18
Inventor 李红光陈天明陈亮杨文中
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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