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Continuous-casting sealed pouring device and technological method for protecting pouring using same

A sealed and continuous casting technology, which is applied in the field of molten steel casting molds, can solve the problems of high inclusion content and unsatisfactory protection pouring effect, so as to ensure the quality of molten steel, reduce the content of oxygen and non-metallic inclusions, and reduce the The effect of tapping temperature

Inactive Publication Date: 2011-05-25
储鸿文 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, billet continuous casting generally adopts the method of "stopper + submerged nozzle + mold slag", which is relatively simple, but the protective pouring effect is not ideal
Molten steel is subjected to secondary oxidation during the pouring process, and the content of inclusions in the steel is high. With the improvement of steel quality and variety requirements, the current pouring device can no longer meet the demand, so it is necessary to further improve the pouring device to meet the expansion of varieties, requirements for improved quality

Method used

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  • Continuous-casting sealed pouring device and technological method for protecting pouring using same
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  • Continuous-casting sealed pouring device and technological method for protecting pouring using same

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Embodiment Construction

[0027] see figure 1 As shown, the continuous casting sealed pouring device of the present invention includes a ladle 1, a tundish 2, a crystallizer 3, a large ladle argon envelope tube 4, a tundish submerged argon envelope tube 5, a first sealing gasket 6 and a second sealing gasket 7. Ladle 1 and crystallizer 3 are located above and below tundish 2 respectively;

[0028] The following of the ladle 1 is provided with a ladle water outlet 11, combined with figure 2 As shown, the outer surface 111 of the lower part of the ladle water outlet 11 is a spherical surface, the spherical surface at the lower part of the ladle water outlet 11 is socketed with the upper end of the ladle argon sealing sleeve 4, and the ladle argon sealing sleeve 4 and the ladle water outlet 11 are arranged There is a first ferrule 6, such as image 3 As shown, the side wall section of the first sealing gasket 6 is inverted L-shaped, the inner cavity surface of the first sealing gasket 6 is a spherical ...

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Abstract

The invention discloses a continuous-casting sealed pouring device and a technological method for protecting the pouring by using same. The device comprises a ladle and the like. The ladle and a crystallizer are respectively arranged above and below a tundish. The lower outer surface of the ladle down nozzle is spherical, and the ladle down nozzle and the tundish down nozzle are respectively muff-coupled with a ladle immersion argon-sealing sleeve and a tundish immersion argon-sealing sleeve. Seal washers are installed between the ladle immersion argon-sealing sleeve and the ladle down nozzle and between the tundish immersion argon-sealing sleeve and the tundish down nozzle. A circle of inner grooves, a first argon through-hole and a second argon through-hole are arranged at the upper parts of the ladle immersion argon-sealing sleeve and the tundish immersion argon-sealing sleeve, wherein the first argon through-hole and the second argon through-hole are vertically communicated with the grooves. The device and technological method provided by the invention are characterized in that the sealing performance of molten steel is improved in the pouring process; the secondary oxidation is avoided; the content of impurity in the steel is reduced; the tapping temperature in a converter is reduced; and the molten steel quality is effectively ensured.

Description

technical field [0001] The invention relates to the technical field of molds for pouring molten steel, in particular to a continuous casting sealed pouring device and a process method for using the device to protect pouring. Background technique [0002] With the increasingly fierce competition in the steel market, users have further increased their requirements for the purity of steel. At present, billet continuous casting generally adopts the method of "stopper + submerged nozzle + mold slag", which is relatively simple, but the protective pouring effect is not ideal. Molten steel is subjected to secondary oxidation during the pouring process, and the content of inclusions in the steel is high. With the improvement of steel quality and variety requirements, the current pouring device can no longer meet the demand, so it is necessary to further improve the pouring device to meet the expansion of varieties, Increased quality requirements. Contents of the invention [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/10
Inventor 储鸿文郑卫民叶俊辉金进文董建伟秦琪谢操
Owner 储鸿文
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