Melting-type ultrasonic vibration device of continuous casting crystallizer

Abstract

The invention discloses a melting-type ultrasonic vibration device of a continuous casting crystallizer. The melting-type ultrasonic vibration device comprises an ultrasonic transducer, an ultrasonic generator connected onto the side surface of the ultrasonic transducer and an amplitude-change pole connected onto the lower end of the ultrasonic transducer, wherein the lower end of the amplitude-change pole is provided with an ultrasonic vibration transmission rod which is inserted into molten steel of crystallizer; the ultrasonic vibration transmission rod is manufactured by adopting a cast steel material which is similar to a cast steel type and additionally contains trace alloy elements; and the ultrasonic vibration transmission rod is allowed to be melted in the molten steel during a casting process. According to the melting-type ultrasonic vibration device, on one hand, the industrial long-time application of ultrasonic metallurgy in continuous casting can be realized; and on the other hand, the superheat degree and temperature gradient of the molten steel can be greatly lowered by the molten tool head, and the aim of improving a casting blank solidification structure is realized by controlling the melting speed of the tool head.

Description

technical field [0001] The invention relates to the technical field of metallurgical continuous casting engineering, in particular to a melting type ultrasonic vibration device for a continuous casting crystallizer. Background technique [0002] The basic ways to control the solidification process are three categories: controlling the cooling rate, strengthening convection, and incubating metamorphism. Among them, controlling the cooling rate is the easiest way to obtain a fine-grained structure and is the most widely used. There are many ways to achieve the goal of grain refinement by strengthening convection to promote dendrite arm breaking and remelting, such as mechanical stirring, electromagnetic stirring, and various vibrations. Inoculation and metamorphism are achieved by adding additives that can promote nucleation (inoculation) and control growth (deterioration) to achieve the purpose of controlling the solidification structure. [0003] Supergenetic refinement is...

AI Technical Summary

Problems solved by technology

This is mainly because the temperature of steel is usually higher than 1500°C when it is poured, and the ultrasonic vibrating rod will melt when inserted into the molten pool and cannot continue to produce.

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