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Casting facility and casting method

A technology of casting equipment and ladle, which is applied in the field of casting equipment for producing clean steel, can solve the problems of accelerated re-oxidation inclusions and increased generation, and achieve the effect of reducing inclusions and reducing the generation of inclusions

Inactive Publication Date: 2020-05-05
POHANG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of the disclosed method, although the inclusions present in the molten steel can be separated and floated, the generation of bare molten steel at the surface of the molten steel increases and thus accelerates the generation of reoxidized inclusions

Method used

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  • Casting facility and casting method
  • Casting facility and casting method
  • Casting facility and casting method

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Embodiment Construction

[0038] Hereinafter, specific embodiments will be described in detail with reference to the accompanying drawings. However, this disclosure may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0039] The present disclosure provides a casting apparatus for reducing or restricting inclusions and bare molten steel by blowing gas into a ladle in a ready state or a casting state of a turret apparatus and a slab casting method using the same.

[0040] figure 1 is a view illustrating a main part of the casting facility according to the exemplary embodiment. figure 2 is a view illustrating a ladle according to an exemplary embodiment. image 3 is a schematic diagram illustrating a gas blowing device according to an exemplary embodiment. Figure 4 is a di...

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Abstract

A method for casting slabs, according to the present invention, comprises the steps of: respectively positioning, at the upper part of a tundish and the outside of the tundish, ladles having molten steel accommodated therein; carrying out casting by supplying, to the tundish, the molten steel of the ladle arranged at the casting position of the upper part of the tundish; and blowing an inert gas into the ladle arranged at the casting position. Therefore, according to an embodiment of the present invention, the inert gas is blown when the ladle is in a stand-by position on a turret apparatus and during casting in which molten steel is supplied to the tundish. Thus, inclusions can be more reduced than those in a conventional casting method, and clean steel can be manufactured. That is, the generation of inclusions in the air can be reduced by carrying out micro-bubbling after opening the ladle when the ladle is in the stand-by position. In addition, the inclusions of the molten steel within the ladle during casting can be reduced by blowing the inert gas into the ladle (L) during casting.

Description

technical field [0001] The present disclosure relates to casting equipment and casting methods, and more particularly to casting equipment capable of producing clean steel. Background technique [0002] Usually, due to the combination of aluminum (Al) and oxygen (O 2 ), the molten steel in the ladle (ladle) will produce such as alumina (Al 2 o 3 ) inclusions. The inclusions condense with the molten steel during casting of the slab, causing the product to fail during rolling. [0003] In order to remove or prevent such as aluminum oxide (Al 2 o 3 ) of inclusions in molten steel in the ladle, either by using the vacuum degassing method (RH, reinstahl huten werke heraus) and the ladle refining furnace (LF, ladle furnace) or by the tundish process during the casting operation In the process, an inert gas such as argon (Ar) gas is blown into molten steel to remove inclusions. [0004] A ladle accommodating molten steel in which molten steel is refined by using a vacuum deg...

Claims

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Application Information

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IPC IPC(8): B22D11/117B22D11/18
CPCB22D11/117B22D1/005B22D1/002B22D11/18
Inventor 金星茁金旭李泳柱金容焕金成演
Owner POHANG IRON & STEEL CO LTD
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