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

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

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1:

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

Example Embodiment

[0038] Embodiment 2:

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

[0040] see Image 6 , in this embodiment, 1 to 4 rows of shunt holes 4d are also opened on the bottom horizontal bottom plate 5 of the current stabilizer 2, and each row of shunt holes 4d is also arranged along the roll width direction of the double-rotating roller 9, Each of the diversion orifices 4d is staggered with any one of the diversion orifices 7 . Opening holes on the bottom horizontal bottom plate 5 of the current stabilizer 2 can increase the flow rate of the molten metal output from the current stabilizer 2 to the distributor 3, improve the diverting ability and improve the efficiency of continuous casting at a certain steady flow effect.

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

Example Embodiment

[0043] Embodiment three:

[0044] This embodiment is basically the same as the first and second embodiments of the present invention, except 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 a combination of any of the different shapes. The specifics can be determined according to the process conditions. For example, the immersion nozzle 1 used may be composed of a straight-tube nozzle 1c and a double-sided orifice nozzle 1a. Different shapes of immersion nozzles 1 can be used as required, which can achieve a good effect of steady 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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