Nozzle device

Abstract

The invention provides a nozzle device mounted on a casting device. The casting device comprises a crucible for accommodating molten steel; and the crucible has a main body and an output port. The nozzle device comprises a support base, a nozzle arranged in the support base, and a first heating unit for heating the nozzle. The support base comprises a base body; and the base body has a stainless steel layer, and a first heat insulation layer positioned at the inner side of the stainless steel layer. The upper end of the nozzle is combined at the bottom of the main body, and is communicated with the output port. The first heating unit comprises two first heating pieces arranged in the base body at an interval and used for heating the nozzle. Therefore, the first heating pieces can heat the nozzle to prevent the molten steel from condensing when flowing through the nozzle; and the first heat insulation layer of the base body can effectively isolate high temperature, and fits the stainless steel layer to improve the whole rigidity, thereby improving cracks caused by high-temperature thermal shock.

Description

technical field [0001] The invention relates to a component of a casting equipment, in particular to a nozzle device. Background technique [0002] The iron and steel industry often needs to pass molten steel through a casting device to cast a thin strip billet, and then perform subsequent operations such as rolling and forming and making products. see figure 1 , the figure is an existing casting device 10, the casting device 10 includes a crucible 11 for containing molten steel, a nozzle 12 combined with the bottom of the crucible 11 and connected to the crucible 11, and a nozzle 12 for supporting the nozzle 12 and a support seat 13 that tightly combines the nozzle 12 and the crucible 11. During casting, the molten steel is poured into the crucible 11 first, the molten steel flows through the crucible 11 and flows into the nozzle 12, and then flows out from one end of the nozzle 12 and is cooled to form a thin steel billet. But because molten steel is in high temperature...

AI Technical Summary

Problems solved by technology

However, because the molten steel is in a high temperature state, when the molten steel flows through the nozzle 12, the temperature of the nozzle 12 is relatively low and the molten steel is likely to solidify, making casting impossible.

And most of the support base 13 selects refractory material for use to avoid serious deformation, softening or fire caused by high temperature in the casting process. figure 2 The cracks or cracks shown are inconvenient in manufacturing, and it is extremely necessary to discuss and improve

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