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Multi-nozzle flow stabilizing and distributing device for strip continuous casting

A multi-nozzle and continuous casting technology, which is applied in the field of flow distribution devices for thin strip continuous casting, can solve problems affecting normal operation and continuous casting strip steel quality, increased fluctuations in molten pool liquid level, and unstable molten steel flow, etc., to achieve Reduce the occurrence of defects, reduce liquid level fluctuations, and improve the effect of flow distribution

Inactive Publication Date: 2012-01-25
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problem with traditional distributors or flow distributors in the past is that there is no internal device to suppress or reduce the turbulent flow and the impact force of the stream during the molten steel flow conveying process, which causes the molten steel to flow unstable, which in turn causes the molten pool to Fluctuation of the liquid level increases, and the temperature inside the molten pool is uneven, which affects normal operation and the quality of continuous casting strip steel

Method used

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  • Multi-nozzle flow stabilizing and distributing device for strip continuous casting
  • Multi-nozzle flow stabilizing and distributing device for strip continuous casting
  • Multi-nozzle flow stabilizing and distributing device for strip continuous casting

Examples

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Embodiment 1

[0031] see Figure 1 to Figure 5 , a multi-nozzle steady flow distribution device for thin strip continuous casting, including a flow distributor 3 arranged above the molten pool at the front end of the initial metal solidification interface, and the metal melt is injected into the flow distributor through a group of submerged nozzles 1 at the bottom of the tundish 3, and then through the flow distributor 3, it enters the molten pool at the front end of the initial metal solidification interface, and the molten pool at the front end of the initial metal solidification interface is surrounded by double-rotating rollers 9 and side sealing plates. The cavity of the flow distributor 3 is also connected with the cavity of the flow stabilizer 2, the cavity of the flow stabilizer 2 is located above the cavity of the flow distributor 3, and the submerged nozzle 1 is immersed in the cavity of the flow stabilizer 2 In the metal melt, the metal melt is injected into the cavity of the cur...

Embodiment 2

[0039] This embodiment is basically the same as the first embodiment of the present invention, the difference is:

[0040] see Figure 6 , in this embodiment, the bottom horizontal base plate 5 of the current stabilizer 2 is also provided with 1 to 4 rows of shunt holes 4d, and each row of shunt holes 4d is also arranged along the roll width direction of the double-rotating roller 9, Each distribution small hole 4d is interlaced with any one of the flow guide holes 7 . Opening holes on the bottom horizontal base plate 5 of the current stabilizer 2 can increase the flow rate of molten metal output from the current stabilizer 2 to the flow distributor 3, improve the diversion capacity under a certain flow stabilization effect, and improve the efficiency of continuous casting.

[0041] In Embodiment 1 and Embodiment 2, the submerged nozzle 1 includes 2 to 4 nozzles, and the submerged nozzle 1 is arranged in the shape of a "one" along the roll width direction of the double-rotati...

Embodiment 3

[0044] This embodiment is basically the same as the first and second embodiments of the present invention, the difference is that:

[0045] see Figure 7 , in this embodiment, the shape of the submerged nozzle 1 is any one of the double-sided hole straight nozzle 1a, the bifurcated nozzle 1b or the straight nozzle 1c or any combination of different shapes. Specifically, it can be determined according to the process conditions. For example, the submerged nozzle 1 used can be composed of a straight nozzle 1c and a double-sided hole nozzle 1a. Submerged nozzles 1 of different shapes can be used according to needs, which can achieve a good effect of stabilizing the flow of molten metal.

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Abstract

The invention discloses a multi-nozzle flow stabilizing and distributing device for strip continuous casting. The device comprises a flow distributor arranged above a molten pool at the front end of a metal initial solidification interface; molten metal is poured into a cavity of the flow distributor through a submerged nozzle at the bottom of a group of tundishes; and after the flow distributionof the flow distributor, the molten metal enters the molten pool at the front end of the metal initial solidification interface. The cavity of the flow distributor is also communicated with a cavity of a flow stabilizer; the cavity of the flow stabilizer is located above the cavity of the flow distributor; the submerged nozzle is submerged in the molten metal in the cavity of the flow stabilizer;and the molten metal is poured into the cavity of the flow stabilizer through the submerged nozzle, and then enters the cavity of the flow distributor after the flow stabilization of the flow stabilizer. The device can improve the flow stability of the molten metal and reduce the influence of the stream impact of the molten metal turbulence on the continuous casting process, so that the temperature distribution of the molten metal is uniform, the casting quality of a metal strip is improved, and the demand for producing relatively wide and thin strip steel is met.

Description

technical field [0001] The invention relates to a liquid metal distributor for continuous casting, in particular to a distribution device for thin strip continuous casting, which can be widely used in the technical field of twin-roll thin strip continuous casting. Background technique [0002] The flow distribution device for thin strip continuous casting is one of the most critical parts in the whole thin strip equipment. The quality of its flow distribution performance has always affected the final quality of the thin strip. Therefore, a lot of research has been done on this content in various countries, such as U.S. Patent has the disclosed dispenser of US6073680, US5587514, US6125917 and US6012508 etc., and it is positioned at the below of tundish, is shaped as a little second tundish. The molten steel flowing in from the tundish flows into the flow distributor through a row of flow holes in the distributor. The flow distributors of Chinese patents ZL01276402.7 and ZL02...

Claims

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Application Information

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IPC IPC(8): B22D11/06B22D11/103
Inventor 阮飞张捷宇刘智宇贺真马婕刘春涛陈记龙樊俊飞任三兵方园
Owner SHANGHAI UNIV
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