Sliding water gap device capable of preventing vortex

Abstract

The invention discloses a sliding water gap device capable of preventing vortex. The sliding water gap device comprises an upper water gap, an upper sliding plate fixedly connected to the bottom of the upper water gap, a middle sliding plate which is connected with the upper sliding plate and capable of doing reciprocating motion in a horizontal direction, a lower sliding plate connected with the middle sliding plate and a lower water gap fixedly connected with the lower sliding plate, wherein a sealed cover plate is arranged on the top of the upper water gap; an opening is formed at the bottom of the upper water gap; a vertical middle hole is formed in the upper water gap; a plurality of circular side holes with the same shape and size are uniformly formed in the side face of the upper water gap and communicated with the middle hole; longitudinally perforative inner holes are formed in the middles of the upper sliding plate, the middle sliding plate, the lower sliding plate and the lower water gap; and the inner holes and the middle hole form steel liquid flow channels. According to the sliding water gap device, the residual steel quantity in a casting container can be reduced, the metal yield can be increased, and involved slag and air can be reduced.

Description

technical field [0001] The invention relates to a sliding nozzle structure in continuous casting technology, in particular to a sliding nozzle device installed on a continuous casting tundish or ladle to prevent vortex generation. Background technique [0002] With the rapid development of steelmaking technology and high-efficiency continuous casting, the sliding nozzle system has become more and more important in the modern iron and steel smelting process, and has become an indispensable part of smelting. It is a control device for molten steel in the casting process of the continuous casting machine. It can accurately adjust the flow of molten steel from the ladle to the continuous casting tundish. A balance is achieved which makes the continuous casting operation easier to control. The sliding nozzle system has been developed rapidly because of its good controllability, convenient loading and unloading, safety and reliability, and the ability to improve steelmaking prod...

AI Technical Summary

Problems solved by technology

However, these suppression methods, including the floating valve method, cannot completely block the vertical inflow of molten steel directly above the nozzle, so the effect of suppressing the converging vortex is not very satisfactory, and these methods need to add additional Devices will inevitably increase the purchase cost and manufacturing cost of refractory materials. At the same time, the devices made of these refractory materials will fall off into the molten steel after being continuously scoured in the molten steel, thereby increasing the inclusion content in the steel and reducing the casting slab. Purity, deterioration of billet quality

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