Plugging cone for tundish nozzle and nozzle plugging method

Abstract

The invention discloses a plugging cone for a tundish nozzle and a nozzle plugging method, and relates to the technical filed of metallurgical production. The plugging cone for the tundish nozzle comprises a plugging cone, the plugging cone is provided with a column body part, a conical plugging part is arranged at the lower end of the column body part, a steel pipe is connected to the upper end of the column body part, a gap for liquid to flow through is formed in the joint between the steel pipe and the column body part, and the inner cavity of the steel pipe is filled with aluminum particles. The tundish nozzle plugging method comprises the following steps that the tundish nozzle is inserted downward into a conical flow control nozzle from the upper part of the tundish nozzle with the plugging cone, the aluminum particles in the inner cavity of the steel pipe are quickly melted in molten steel, then flows out from the gap which is provided for the liquid to flow through and plugs the flow control nozzle together with the plugging part, and the complete plugging of the tundish nozzle is achieved. Compared with the prior art, according to the plugging cone for the tundish nozzle and the nozzle plugging method, the tundish nozzle can be quickly plugged, the situations that plugging is failed, and the molten steel leakages from casting nozzle bricks and slide plate bricks are avoided, the potential safety hazards brought to production equipment and personal safety is eliminated, and the expansion of accidents is prevented.

Description

technical field [0001] The invention relates to the technical field of metallurgical production, in particular to a plugging cone for a nozzle of a tundish and a method for plugging the nozzle. Background technique [0002] The tundish of the billet continuous casting machine is a transition container connecting the ladle and the crystallizer. It accepts the molten steel poured from the ladle, and then injects the molten steel into the crystallizer through the tundish nozzle. Tundish nozzle such as figure 1 As shown, it includes a seat brick 101 embedded in the shell of the tundish 102. The seat brick 101 has an inner cavity that penetrates up and down. The seat brick 101 has a sprue brick 103 that extends from the lower end into its inner cavity. There is a zirconium bowl 106, the upper part of the zirconium bowl 106 is provided with a conical flow control nozzle, and the lower end of the sprue brick 103 is provided with a slide brick 104 with a molten steel flow channel. ...

AI Technical Summary

Problems solved by technology

[0005] The above tasks of the present invention are all to solve the problem of using the existing tundish nozzle with a blocking cone to block the tundish nozzle from below the tundish nozzle upwards, which is prone to failure to seal and molten steel to leak from between the sprue brick and the slide brick In the future, it will bring great potential safety hazards to production equipment and personal safety.

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