Split type tundish turbulence inhibitor

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: 2021-03-19
NORTHEASTERN UNIV
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  • Claims
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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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  • Split type tundish turbulence inhibitor
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  • Split type tundish turbulence inhibitor

Examples

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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

The invention discloses a split type tundish turbulence inhibitor which comprises a turdish body and an external turbulence inhibiting region, wherein the external turbulence inhibiting region comprises a controller upper part, a controller lower part and a chamber. The turbulence inhibitor is additionally arranged in the external turbulence inhibiting region, so that molten steel enters the turbulence inhibitor from a long nozzle to generate fierce upward backflow by impacting the lower part of the bottom controller; then the controller upper part blocks the molten steel flow which is upwardsimpacted, so that the molten steel flow downwards flows to the bottom of the external turbulence inhibiting region, then upwards flows out of the external turbulence inhibiting region from a positionbetween the turbulence inhibitor and the wall surface of the external turbulence inhibiting region, and finally flows to the turdish body. On one hand, the turbulence inhibitor weakens turbulence intensity of the molten steel to reduce turbulent kinetic energy, so that impact, on a slag-metal interface, of the molten steel is reduced; on the other hand, speed of making the molten steel enter thetundish body is increased, piston flow volume is increased, the size of a dead region is reduced, stay time of molten steel is prolonged, good flow fields are created for removing impurities, and theimpurities can be floated and removed better.

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 Applications(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
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