Method for automatic pouring of thin sheet bar continuous casting machine

A thin slab continuous casting and automatic casting technology, applied in the field of all-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, maintaining liquid level stability, cost saving effect

Active Publication Date: 2018-11-30
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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  • Method for automatic pouring of thin sheet bar continuous casting machine
  • Method for automatic pouring of thin sheet bar continuous casting machine
  • Method for automatic pouring of thin sheet bar 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 is as follows:

[0042] (1) Turn on the roaster, the roaster is right Image 6 The shown tundish 6 is baked, the baking time is 5.5h, and the temperature of the tundish 6 is 1280℃; when the baking is finished, lift the roaster, and add to the inside of the tundish 6 through the lid hole 7 of the tundish The amount of the lower covering agent is 200kg, so that the covering agent is located between the barrier 8 and the barrier 9; then two argon pipes 11 are set at the pouring hole 10, and the flow rate of argon is controlled to 2250L / min, so that the argon can pass through The argon pipe enters the interior of the tundish 6, which is convenient for gas washing of molten steel;

[0043] (2) After the centering of the tundish car is completed, the ladle slide plate is opened, a...

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 is as follows:

[0052] (1) Turn on the roaster, the roaster is right Image 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 to the inside of the tundish 6 through the cover hole 7 of the tundish The amount of the lower layer of covering agent is 200kg, so that the covering agent is located between the barrier 8 and the barrier 9; then two argon pipes 11 are set at the pouring hole 10, and the flow rate of argon is controlled to 2000L / min to allow argon to pass The argon pipe enters the interior of the tundish 6, which is convenient for gas washing of molten steel;

[0053] (2) After the centering of the tundish car is completed, the ladle slide plate is turned on,...

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 is as follows:

[0062] (1) Turn on the roaster, the roaster is right Image 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 to the inside of the tundish 6 through the cover hole 7 of the tundish The amount of the lower covering agent is 200kg, so that the covering agent is located between the dam 8 and the dam 9; then two argon pipes 11 are set at the pouring hole 10, and the flow rate of argon is controlled to 2500L / min, so that the argon can pass through The argon pipe enters the inside of the tundish to facilitate the gas washing of molten steel;

[0063] (2) After the tundish car is centered, the ladle slide plate is turned on, and the pouring starts, and the ...

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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 headless 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 is abbreviated as CSP. It is a new short-flow process for the production of hot-rolled coils that was 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 all-endless continuous casting and rolling technology directly connects continuous casting and rolling steel. The cast slab enters the rough rolling and finishing rolling directly from the exit of the continuous casting without passing through the heating furnace. The total length of a single production line is 186m, starting from molten steel to producing hot rolling. The coi...

Claims

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Application Information

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Patent Type & Authority Applications(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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