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Self rotational flow long water gap for continuous casting

A long flow and continuous casting technology, which is applied to casting equipment, casting melt containers, metal processing equipment, etc., can solve the problems affecting the production efficiency of continuous casting, gas absorption and corrosion of refractory materials, and reduce the quality of molten steel. Residual volume, reduced impact depth, increased effect of regurgitation

Pending Publication Date: 2018-08-24
东北大学秦皇岛分校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

An unreasonable tundish flow field may cause a series of problems such as slag entrainment, gas absorption and refractory erosion, which will greatly reduce the quality of molten steel and affect the production efficiency of continuous casting

Method used

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  • Self rotational flow long water gap for continuous casting
  • Self rotational flow long water gap for continuous casting
  • Self rotational flow long water gap for continuous casting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The inner diameter of the developed long nozzle is 90mm, and the length of the nozzle is 1200mm; the maximum outer diameter of the spiral guide rail of the built-in swirl guide device is 90mm, and the length is 1000mm. The length of the maximum helical radius region in the middle of the guide rail is 3 / 4 of the total length of the helical guide rail.

Embodiment 2

[0022] The inner diameter of the long nozzle is 80mm, and the length of the nozzle is 1000mm; the maximum outer diameter of the spiral guide rail of the built-in swirl guide device is 70mm, and the length is 700mm. The length of the maximum helical radius area is 1 / 2 of the total length of the helical guide rail.

Embodiment 3

[0024] The inner diameter of the long nozzle used is 50mm, and the length of the nozzle is 800mm; the maximum outer diameter of the spiral guide rail of the built-in swirl guide device is 40mm, and the length is 700mm. The length of the region with the largest helical radius in the middle is 1 / 4 of the total length of the helical guide rail.

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Abstract

The invention belongs to the technical field of continuous casting and discloses a self rotational flow long water gap for continuous casting. The self rotational flow water gap is composed of a longwater gap body and a rotational flow guiding device and is characterized in that the rotational flow guiding device is arranged in the long water gap body and is a spiral guide rail; and the maximum external diameter of the spiral guide rail is not greater than the internal diameter of the long water gap body. The self rotational flow long water gap can fully express the centrifugal effect of rotational flow continuous casting, enables molten steel outflow to disperse and enter a tundish, reduces impact depth, increases upper backflow, facilitates floating of steel slag and production of cleansteel, can reduce residual volume of molten steel in a large package and facilitates energy conservation and emission reduction.

Description

technical field [0001] The invention belongs to the technical field of continuous casting, and in particular relates to a spin flow long nozzle for continuous casting. Background technique [0002] Continuous casting of steel is a process in which liquid steel with a certain degree of superheat is continuously cooled through a water-cooled crystallizer into a solid billet with a certain shape. With the application and development of continuous casting technology, especially due to the higher and higher requirements of users for steel quality and the fierce competition in the international market, the quality of continuous casting slabs has been paid more and more attention. Strictly control the cleanliness of molten steel to reduce the Billet defect has become an important work in continuous casting production. [0003] During the continuous casting process, molten steel flows into the tundish from the ladle through the long nozzle, and the flow rate of the long nozzle is d...

Claims

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Application Information

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IPC IPC(8): B22D41/50
CPCB22D41/507
Inventor 李德伟王强朱晓伟吴春雷丸川雄净赫冀成
Owner 东北大学秦皇岛分校
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