A method and system for automatic control of tundish liquid level

Abstract

The invention discloses a method and system for automatically controlling the liquid level of a tundish, which are applied in the field of continuous casting. The method comprises: after the ladle is poured, monitoring whether the weight of the tundish reaches a predetermined level during the process of injecting molten steel from the ladle into the tundish Weight value; when the weight of the tundish is monitored to reach the predetermined weight value, the tundish is notified to start pouring to inject molten steel into the mold; during the process of injecting molten steel from the tundish into the mold, according to the monitored tundish The current weight value adjusts the speed at which the steel ladle injects molten steel into the tundish, so as to control the content of the molten steel in the tundish within a preset weight range of a predetermined weight value as a reference value. Therefore, the vortex slag rolling of the ladle can be effectively eliminated to improve the purity of the molten steel, and there is no need to close the pouring of the ladle in advance, thereby improving the metal yield.

Description

technical field [0001] The invention relates to the field of continuous casting, in particular to an automatic control method and system for a tundish liquid level. Background technique [0002] In the production process of continuous casting, as the molten steel level drops in the later stage of casting, due to the action of the earth's deflection force (Coriolis force), a confluence vortex will be generated at the steel-slag interface in the ladle, and the vortex will easily cause slag entrainment. When the height of molten steel is lower than the critical height of the vortex, the vortex is even involved in gas, the concave vortex becomes more and more obvious, and the swirling velocity becomes larger and larger until it passes through the nozzle. The height of the liquid level at this time is called the penetration height, resulting in a large Slag enters the nozzle, which is very unfavorable to the production of clean steel. The ladle vortex slag brings great harm: (1)...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem that the existing technical means of preventing ladle slag volume will reduce the metal yield, the embodiment of the present invention provides an automatic control method and system for the liquid level of the tundish

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