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Low temperature decrease steel ladle pouring method

A ladle pouring and low temperature technology, which is applied in the direction of casting molten material containers, manufacturing tools, metal processing equipment, etc., can solve the problems of steel performance degradation, high superheat of molten steel in the tundish, etc., and achieve the effect of reducing the consumption of refractory materials

Inactive Publication Date: 2005-07-20
SHOUGANG CORPORATION
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  • Abstract
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Problems solved by technology

After the method is implemented, the molten steel in the ladle and the lining can be heated and kept warm during the steel pouring process of the casting machine, the temperature drop of the molten steel and the ladle during the steel pouring process can be reduced, and the superheat degree can be stabilized in the early and late stages of a furnace of molten steel pouring, reaching The purpose of low temperature drop and low superheat pouring steel is to reduce the degree of porosity, shrinkage cavity and composition segregation of the slab, and to a large extent solve the problem of high superheat of molten steel in the tundish, which is common in the development of high-carbon steel in the current continuous casting. The problem of steel performance degradation caused by central loose segregation

Method used

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  • Low temperature decrease steel ladle pouring method

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Embodiment Construction

[0022] The invention will be further described below in conjunction with the accompanying drawings

[0023] 1. Install the cantilever crane

[0024] A cantilever crane is installed near the turret of the continuous casting ladle, and the function of the cantilever crane is to lift the ladle cover with the burner. When the cantilever is hoisted to a high position, ensure that there is a free space of 500mm between the ladle cover and the upper edge of the ladle sitting on the high position of the turntable of the casting machine. After the cantilever crane is lowered, the ladle cover can be covered on the ladle.

[0025] 2. Make the heating bag cover

[0026] The heating burner is installed in the center of the cover. The high-efficiency burner is used to improve the heating efficiency of the flame and ensure the effective heating of the molten steel after the liquid level is lowered. The cover is lined with light-weight refractory materials to reduce the weight of the cover ...

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Abstract

The present invention relates to a two temperature drop ladle pouring method. It is characterized by that in the ladel pouring process said invention utilizes gas to heat molten steel by means of high-effective nozzle mounted on the ladel cover, and utilizes bottom blowing argon to stir the molten steel. Said method can stabilize pouring basket temperature and can implement stable low overheat molten steel pouring operation.

Description

[0001] Field: [0002] The invention relates to a low-temperature drop ladle pouring method, which is mainly applicable to steelmaking plants in the metallurgical industry. Background technique: [0003] Nowadays, most metallurgical enterprises have realized full continuous casting. During the casting process of the continuous casting machine, the molten steel stays in the ladle for a long time, and the temperature drop of the molten steel in the ladle and the ladle itself is relatively large during the pouring process. The continuous casting process itself requires stable temperature of molten steel and stable superheat of molten steel in the tundish. Only when the superheat of molten steel is stable can the casting machine operate smoothly. [0004] The pouring time of continuous casting ladle is generally more than 30 minutes. The difference between the highest superheat and the lowest superheat of a furnace of steel in the pouring process is generally 6-13 degrees, that is...

Claims

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Application Information

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IPC IPC(8): B22D1/00B22D41/01B22D41/58
Inventor 李树森罗伯钢
Owner SHOUGANG CORPORATION
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