Northeastern University (Shenyang, China):

A. Yu. Tretyak, Post-graduate, Key Laboratory of Electromagnetic Processing of Materials, School of Intern. Exchange, E-mail: Tretyak.Alex-anderson@yandex.ua
Qiang Wang, Dr. Eng., Prof., Head of the Dept., Key Laboratory of Electromagnetic Processing of Materials, E-mail: wangq@mail.neu.edu.cn
Chun-Lei Wu, Grad. Student, School of Metallurgy, E-mail: hardcooluk@hotmail.com

National Metallurgical Academy of Ukraine (Dnepr, Ukraine):
E. I. Shifrin, Dr. Eng., Prof., Dept. of Metal Forming, E-mail: shifrinei48@gmail.com

Continuous casting of steel has many ways to control the quality of the billets. The possibilities offered by electromagnetic stirring are far superior to physical eff ects, but combining these two quality control methods can be extremely effective. Research have shown the possibility of a qualitative eff ect on the flow of the liquid in the mold with implementation of electromagnetic stirring technology and the “skirt” is used in the form of a “shelf” on the nozzle, which is immersed in the mold. In addition, implementation of this shelf increase the possibilities of using direct-flow nozzles with the slope of the inner wall, where in each case it gives advantages, both with an expanding channel, and with a narrowing one. The design of the shelf also does not affect the implementation of electromagnetic stirring in the process of continuous casting, since it is below the level of the mold meniscus and above the level of the effect of the electromagnetic stirrer in the mold. The results of the research show that when using a “shelf” in the middle of the immersion nozzle depth, the casting process is accompanied by the control of most of the flows that are created when the jet enters into the mold and effect of EMS. It also affects the formation of vertex on the meniscus. And the implementation of a “shelf” at the outlet of the submersible nozzle completely changes the nature of the flow of the incoming jet.

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