Equipment for molten steel continuous casting and continuous casting method

Abstract

The invention discloses equipment for molten steel continuous casting, and a continuous casting method. The equipment for molten steel continuous casting replaces a long nozzle of a previous steel ladle through a non-oxidation immersion cover, a molten steel injection flow from the steel ladle to a tundish can be protected against secondary oxidation due to contact with air, the non-oxidation immersion cover is inserted into the tundish, argon is blown into the non-oxidation immersion cover, a slag-free oxygen-free area full of the argon is formed in the non-oxidation immersion cover, a condition is provided for preventing molten steel secondary oxidation, the quality of steel balls can be improved, meanwhile, the non-oxidation immersion cover is arranged, the structure of the long nozzleis omitted, and the problems that the long nozzle needs to be continuously cleaned, the pouring takt is affected, and labor intensity of a worker is affected can be effectively solved. The continuouscasting method uses the equipment, the equipment for molten steel continuous casting has the advantages of being simple in structure, reasonable in design, convenient to use, low in secondary oxidation degree of molten steel pouring, high in made steel ball quality and the like, cleaning of the long nozzle is not needed, and labor intensity of the worker is low.

Description

technical field [0001] The disclosure of the invention relates to the technical field of continuous casting of molten steel, in particular to equipment for continuous casting of molten steel and a continuous casting method thereof. Background technique [0002] As the quality requirements for steel grades become more and more stringent, the requirements for the cleanliness of continuous casting slabs are also getting higher and higher. Among them, the degree of contamination of continuous casting slabs mainly depends on the degree of secondary oxidation of molten steel. If no good protective pouring measures are taken, the molten steel will inevitably come into contact with the air during pouring, causing secondary oxidation, which will affect the quality of the steel grade and the yield of alloy elements in the steel. [0003] At present, equipment for continuous casting of molten steel is mainly composed of a tundish and a ladle, wherein the ladle is located above the tund...

AI Technical Summary

Problems solved by technology

[0006] In view of this, the present invention provides a continuous casting equipment for molten steel and a continuous casting method, to at least solve the problems of high secondary oxidation, affecting the quality of steel grades and the need for constant cleaning of the shroud in the ladle in conventional molten steel continuous casting equipment. Affect the pouring rhythm, leading to problems such as high labor intensity of workers

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