High quality steel continuous casting protection casting device

Abstract

The invention relates to a continuous casting protection casting device of high-quality steel, which belongs to molten steel casting equipment, and particularly relates to a continuous casting protection casting device for the high-quality steel. The continuous casting protection casting device is characterized in that an elastic corrugated pipe is arranged on an iron casing, a water outlet is surrounded by the corrugated pipe, and an annular asbestos sealing gasket is arranged on the upper end of the corrugated pipe, is abutted below a steel ladle and is opposite to a steel outlet; a conical asbestos sealing ring is arranged in the contact position of the water outlet and a long water opening, and the long water opening, the elastic corrugated pipe, the asbestos sealing gasket, the water outlet and the asbestos sealing ring form an elastic argon gas sealing chamber. The continuous casting protection casting device has the advantages that the elastic argon gas sealing chamber which is provided with an argon gas inlet and is formed by the elastic corrugated pipe, the asbestos sealing gasket and the asbestos sealing ring is arranged between the water outlet and the long water opening, so that molten steel is effectively prevented from being contacted with air, the argon sealing effect is enhanced, secondary oxidation of the molten steel is avoided, smooth continuous casting production is guaranteed, inclusions in steel are reduced, the quality of the molten steel is improved and improved, and the requirement of high purity of the high-quality steel is satisfied.

Description

technical field [0001] The invention belongs to molten steel casting equipment, in particular to a protective casting device for continuous casting of high-quality steel. Background technique [0002] With the continuous development of high-quality steel, the requirements for the purity of steel are getting higher and higher. After the molten steel, especially the high-quality aluminum-containing steel, has been refined, the content of inclusions in the molten steel is very low, so the secondary process of molten steel in the continuous casting process Oxidation will become one of the important factors affecting the purity of steel. During casting, due to the structural characteristics of the shroud and the bowl of the shroud, there is a certain gap between the bowl of the shroud and the end of the shroud. During the casting process, under the action of high-speed steel flow, there will be relatively large gaps in this area. Large negative pressure, it is easy to inhale air...

AI Technical Summary

Problems solved by technology

The disadvantages are that the lower part of the conical cap is open, the distribution of argon gas is uneven, the effect of argon sealing is poor, the utilization rate of argon gas is low, and the cost increases

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