A method for automatic pouring of thin slab continuous casting machine

A thin slab continuous casting and automatic casting technology, applied in the field of full-endless thin slab continuous casting and rolling, can solve the problems of high accident rate of manual casting and unstable casting quality, so as to avoid breakout or continuous rolling. Terminal phenomenon, maintain liquid level stability, improve the effect of quality

Active Publication Date: 2020-12-22
RIZHAO STEEL HLDG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the present invention provides a method for automatic casting of a thin slab continuous casting machine. Through the interlocking design of the process parameters of the thin slab continuous casting machine, the automation of the casting process is realized, thereby effectively solving the problem of high accident rate of manual casting and casting problems. The problem of unstable billet quality

Method used

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  • A method for automatic pouring of thin slab continuous casting machine
  • A method for automatic pouring of thin slab continuous casting machine
  • A method for automatic pouring of thin slab continuous casting machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The production section is 1500×100mm 2 The thin slab adopts the following technical solutions:

[0041] Such as Figure 5 As shown, the method for automatic pouring of thin slab continuous casting machine, the steps are as follows:

[0042] (1) Turn on the roaster, and the roaster is Figure 6 The shown tundish 6 is baked, the baking time is 5.5h, and the temperature of the tundish 6 is 1280°C; when the baking is finished, lift the roaster, and add The amount of covering agent in the lower layer is 200kg, so that the covering agent is located between the dam 8 and the dam 9; then set two argon gas pipes 11 at the pouring hole 10, and control the flow rate range of the argon gas to 2250L / min, so that the argon gas passes through The argon gas pipe enters the inside of the tundish 6 to facilitate air washing of the molten steel;

[0043] (2) After the centering of the tundish car is completed, the ladle slide plate is opened, and the pouring starts, and the molten steel...

Embodiment 2

[0050] The production section is 1175×100mm 2 The thin slab adopts the following technical solutions:

[0051] Such as Figure 5 As shown, the method for automatic pouring of thin slab continuous casting machine, the steps are as follows:

[0052] (1) Turn on the roaster, and the roaster is Figure 6 The shown tundish 6 is baked, the baking time is 5.5h, and the temperature of the tundish 6 is 1280°C; when the baking is finished, lift the roaster, and add The amount of covering agent in the lower layer is 200kg, so that the covering agent is located between the dam 8 and the dam 9; then two argon gas pipes 11 are installed at the pouring hole 10, and the flow rate range of the argon gas is controlled to 2000L / min, so that the argon gas passes through The argon gas pipe enters the inside of the tundish 6 to facilitate air washing of the molten steel;

[0053] (2) After the centering of the tundish car is completed, the ladle slide plate is opened, and the pouring starts, an...

Embodiment 3

[0060] The production section is 1219×100mm 2 The thin slab adopts the following technical solutions:

[0061] Such as Figure 5 As shown, the method for automatic pouring of thin slab continuous casting machine, the steps are as follows:

[0062] (1) Turn on the roaster, and the roaster is Figure 6 The shown tundish 6 is baked, the baking time is 5.5h, and the temperature of the tundish 6 is 1280°C; when the baking is finished, lift the roaster, and add The amount of covering agent in the lower layer is 200kg, so that the covering agent is located between the dam 8 and the dam 9; then two argon gas pipes 11 are installed at the pouring hole 10, and the flow rate range of the argon gas is controlled to 2500L / min, so that the argon gas passes through The argon gas pipe enters the inside of the tundish for easy air washing of molten steel;

[0063] (2) After the centering of the tundish car is completed, the ladle slide plate is opened, and the pouring starts, and the molte...

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Abstract

The invention provides a method for automatic pouring of a thin sheet bar continuous casting machine. The method comprises the steps of preheating a pouring box; injecting molten steel in a steel ladle into the pouring box, and using a pouring box stopper to automatically operate to inject the pouring box molten steel into a crystallizer; detecting a molten steel liquid level by a radiation source, adding protective slag, when the molten steel liquid level reaches 125 mm, automatically activating secondary cooling water, crystallizer vibration and a tension leveler, and setting the pulling seed of the tension leveler; when the pulling speed is 3.5m / min and a stable casting blank tracking value ranges from 3m to 5m, using an eddy current sensing to detect the molten steel liquid level; whenthe molten steel liquid level floating range is+-1mm and the casting blank tracking value ranges from 5m to 8m, after the electromagnetic brake is in normal operation, pressing a dynamic liquid core,completing automatic pouring starting, and using a normal increasing speed. The method has the advantages of achieving the automatic pouring under a high pulling speed condition, obtaining thin sheetbars with stable quality and being high in success rate of the automatic pouring.

Description

technical field [0001] The invention relates to the field of full-endless thin slab continuous casting and rolling, in particular to a method for automatic pouring of a thin slab continuous casting machine. Background technique [0002] Thin slab continuous casting and rolling, referred to as CSP, is a brand-new short-process process for the production of hot-rolled coils successfully developed in the late 1980s. In recent years, the full endless continuous casting and rolling developed on the basis of CSP technology is one of the most significant revolutionary technologies in the steel industry. The full-endless continuous casting and rolling technology directly connects continuous casting and steel rolling. The casting slab directly enters rough rolling and finishing rolling from the continuous casting outlet without passing through the heating furnace. The coiling end time is 7min. The continuous casting slab does not require shearing and continuous rolling, so it can m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/18
CPCB22D11/161B22D11/186B22D11/187
Inventor 田振王诗杨国明梁其凯安守勇吴志会徐由标
Owner RIZHAO STEEL HLDG GROUP
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