Continuous casting tundish safety flow control device and method thereof

Abstract

The invention relates to a continuous casting tundish safety flow control device and method thereof. The device includes a stopper, a tundish nozzle split quick-change structure and a quick-change nozzle tundish; the tundish nozzle split quick-change structure includes a quick-change The upper nozzle and the quick-change nozzle; the quick-change nozzle tundish includes an upper guide plate, a lower guide plate, and a gas spring; the upper guide plate, lower guide plate and gas spring form a long track, and the quick-change nozzle is set on the long track. It is connected with the quick-change nozzle; when replacing the quick-change nozzle, place the new quick-change nozzle on one side of the long track, use the hydraulic cylinder push rod to push the new quick-change nozzle, and put the old one on the line The quick-change nozzle is pushed out to realize online replacement of the quick-change nozzle; the flow control method of the present invention has the advantages of high safety factor and easy flow control. When the stopper breaks and loses the flow control function, the quick-change nozzle can be used to control the flow. At the same time, due to the small aperture of the quick-change nozzle, it is easy to block the flow, which can reduce the occurrence of production accidents in the subcontractor.

Description

technical field [0001] The invention relates to a tundish flow control technology, in particular to a continuous casting tundish safety flow control device and method thereof. Background technique [0002] When the steelmaking production line produces high-quality steel, the stopper rod tundish used in the continuous casting process has a separate upper nozzle, the diameter of the nozzle is generally 25-30mm, and the flow control is controlled by the stopper rod. The life of the tundish during production is 12-16mm. Hours, although through careful operation and strengthened management, the service life of the stopper rod can reach up to 16 hours, but it is unstable; the stopper rod is prone to breakage and loss of control during the production process, and the steel flow cannot be controlled, and because the stopper rod The nozzle diameter of the tundish is relatively large, and it is not easy to block the flow when there is an abnormality, which will lead to the unplanned o...

AI Technical Summary

Problems solved by technology

[0002] When the steelmaking production line produces high-quality steel, the stopper rod tundish used in the continuous casting process has a separate upper nozzle, the diameter of the nozzle is generally 25-30mm, and the flow control is controlled by the stopper rod. The life of the tundish during production is 12-16mm. Hours, although through careful operation and strengthened management, the service life of the stopper rod can reach up to 16 hours, but it is unstable; the stopper rod is prone to breakage and loss of control during the production process, and the steel flow cannot be controlled, and because the stopper rod The nozzle diameter of the tundish is relatively large, and it is not easy to block the flow when there is an abnormality, resulting in the unplanned off-line of the tundish, the molten steel smelted in the refining furnace and the converter cannot be poured, and it is easy to cause other accidents

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