Argon protective device for ingot steel casting

Abstract

The invention discloses an argon protective device for ingot steel casting, which is composed of an inner barrel and an outer barrel; a connecting plate for connecting the inner barrel and the outer barrel is arranged at the lower end of the inner barrel and the outer barrel, ceramic fiber sealing sleeve is filled between the inner barrel and the outer barrel at the upper end of the connecting plate, and the ceramic fiber sealing sleeve is higher than the upper end surface of the inner barrel and the outer barrel; an argon lead-in pipe which is extended outwards is arranged on the outer barrel wall at the lower end of the connecting plate, and a plurality of through holes which lead argon out are arranged on the inner barrel wall corresponding to the argon lead-in pipe, and the height between the upper end surface of the connecting plate and the upper end surface of the inner barrel and the outer barrel is more than the height between the lower end surface of the connecting plate and the lower end surface between the inner barrel and the outer barrel. The argon protective device can reduce secondary oxidization in the casting process of molten steel, reduce the mixed sundries in the molten steel and improve the molten steel purity degree.

Description

technical field [0001] The invention relates to a protective device used in the pouring process of large steel ingots, in particular to an argon protective device for pouring steel ingots. Background technique [0002] During the pouring process of large forgings, due to the height difference between the ladle and the tundish, and between the ladle and the bell mouth of the intermediate injection pipe, part of the molten steel is exposed to the atmosphere during pouring. In this way, it is easy to cause the molten steel to undergo oxidation reaction to generate oxides; during the solidification process of the steel ingot, it accumulates into large-grained endogenous inclusions, which has adverse effects on product quality and various physical properties. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an argon protection device for pouring steel ingots, which can reduce secondary oxidation of molten steel during ...

AI Technical Summary

Problems solved by technology

In this way, it is easy to cause the molten steel to undergo oxidation reaction and generate oxides; during the solidification process of the steel ingot, it will accumulate into large-grained endogenous inclusions, which will have adverse effects on product quality and various physical properties.

Images