A split tundish turbulence controller

A turbulent flow controller and controller technology, which is applied in the direction of manufacturing tools, casting molten material containers, metal processing equipment, etc., can solve the problems of large impact on the ladle slag-gold interface and limited improvement of the flow field, so as to promote the growth of collision polymerization, Effect of increased turbulent kinetic energy dissipation rate and flow stabilization

Active Publication Date: 2021-08-31
NORTHEASTERN UNIV LIAONING
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Problems solved by technology

However, these methods have limited improvement on the flow field in the injection area, and placing the turbulence controller in the tundish has a great influence on the ladle-slag-gold interface

Method used

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  • A split tundish turbulence controller
  • A split tundish turbulence controller
  • A split tundish turbulence controller

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Embodiment 1

[0037] The metallurgical effect of the split tundish turbulence controller is studied by using water model experiments and numerical simulations. The length of the top of the tundish body 8 is L 6 =5500mm, width L 4 =1400mm, the length of the bottom of the tundish body 8 is L 5 =5000mm, width L 3 =1200mm, tundish body 8 height H 5 =1300mm (the size shown is only the fluid area of ​​the tundish, not including the refractory part); the inner diameter d of the external flow control device 6 =700mm, height H 1 =800mm; the length D of the groove 4 between the tundish body 8 and the external flow control area 3=550mm, the angle θ between the side wall of the groove 4 and the tundish body 8 3 =90°, height H 6 =200mm; inner diameter d of shroud 1 1 =100mm, the height H of the upper part of the controller 201 2 =110mm, the included angle θ 1 =20°, the height H of the lower part of the controller 202 3 =90mm, the included angle θ 2 =20°; chamber 203 height H 4 =200mm. During...

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Abstract

A split-type tundish turbulence controller includes two parts: a tundish body and an external flow control area. The external flow control area includes the upper part of the controller, the lower part of the controller and the chamber. In the present invention, by adding a turbulent flow controller in the external flow control area, the molten steel enters the turbulent flow controller from the long nozzle, and impacts the lower part of the bottom controller to generate a strong upward reflux, and then the upper part of the controller blocks the upwardly impacting molten steel flow, making it flow toward the The bottom flows along the bottom of the external flow control area, then flows upward from the gap between the turbulence controller and the wall of the external flow control area, and finally flows to the tundish body. On the one hand, the turbulence controller weakens the turbulent flow intensity of the molten steel, reduces the turbulent kinetic energy, and reduces the impact of the molten steel on the slag-gold interface; volume, increase the residence time of molten steel, create a good flow field for the removal of inclusions, and be more conducive to the floating removal of inclusions.

Description

technical field [0001] The invention belongs to the technical field of continuous casting, and in particular relates to a split-type tundish turbulence controller. Background technique [0002] Modern iron and steel enterprises usually adopt continuous casting technology in order to improve production efficiency. In the continuous casting process, the molten steel in the tundish enters the mold through the sliding nozzle and the submerged nozzle, and the injection amount of the molten steel from the tundish to the mold and the flow of the molten steel in the mold are realized by using the stopper rod and the sliding nozzle. Behavior control is of great significance for stable operation and guarantee of slab quality. Among the many metallurgical functions of the tundish, the degree of removal of inclusions has always been the focus of metallurgists. For continuous casting of molten steel, the optimal design of the flow control device in the tundish plays an important role i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D41/00
CPCB22D41/00
Inventor 卢金霖罗志国邹宗树杨伟栋赖卿锐史本慧
Owner NORTHEASTERN UNIV LIAONING
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