A ladle nozzle capable of increasing self-opening rate

Abstract

The invention discloses a ladle nozzle applied to the steel casting technology and particularly relates to a ladle nozzle capable of improving the automatic casting rate. A variable-diameter stuffing sand flowing channel is arranged at an upper water inlet. The upper water inlet is composed of an upper portion and a lower portion, and the inner diameter of the upper portion of the upper water inlet is larger than that of the lower portion of the upper water inlet. By means of the ladle nozzle, upper arch drainage sand piles are not produced, flowing of stuffing sand is facilitated, and the automatic casting rate is improved, the defect of manual oxygen burning casting in the prior art is overcome, the molten steel automatic casting rate is improved, the production rhythm is stabilized, effects of oxygen burning on the quality of molten steel are reduced, residual slag of steel ladles is reduced, and the like.

Description

Technical field: [0001] The invention belongs to the technical field of pouring equipment manufacturing in the metallurgical industry, and in particular relates to a ladle nozzle used in the iron and steel casting process. Background technique: [0002] At present, in the field of casting equipment manufacturing technology in the metallurgical industry, especially in the continuous casting production process of steel, qualified molten steel is transferred to the ladle turret. When casting molten steel, the molten steel first enters the tundish from the ladle, and then The tundish enters the crystallizer, and finally casts into the required billet. When the molten steel is poured into the tundish from the ladle, it is necessary to use the ladle nozzle device. At present, the sliding nozzle device is mostly used, which is generally composed of an upper nozzle, an upper slide plate, a lower plate, and a lower nozzle. shaped cylindrical tubes, such as figure 1 shown. The disa...

AI Technical Summary

Problems solved by technology

[0005] The technical idea of ​​the present invention is that, in order to solve the structural form of the above-mentioned funnel-shaped cylindrical tube (whether it is a forward funnel-shaped or an inverted funnel-shaped), when the pouring is started, the pouring cannot be self-guided and the pouring needs to be started manually, which affects production. Rhythm, polluted molten steel, affecting the quality of molten steel and ladle casting residue and other technical problems, the technical idea provided by the present invention is to design the ladle nozzle in the prior art as a variable-diameter ladle upper nozzle, so that between the existing molten steel and the nozzle Add a transition section formed by the drainage sand in between, so as to achieve the ladle upper nozzle that does not produce an arched drainage sand pile, is conducive to the flow of the drainage sand, and improves the self-opening rate of the molten steel, and solves the defects and insufficiencies of the ladle nozzle in the prior art

Images