INVESTIGATION AND IMPROVEMENT OF THE RAPID CHANGE SYSTEM OF SUBMERGED NOZZLE OF SLAB CCM TUNDISH
https://doi.org/10.17073/0368-0797-2016-1-49-56
Abstract
The article describes the application prospects of rapid change systems of the submerged nozzles slab continuous casting machines of tundishes and the necessity of its further improvement to increase of reliability. The technique and results of experimental investigations of the drive power parameters of mechanism for moving of the submerged nozzles are shown. The casting system had various design of support-clamping unit for providing the conditions of slide friction and rolling friction between the supporting surface of metal holder of the protective refractory and elements that its presses. It was found that, if plane press elements in support unit are changed on the rollers, the total value of opposing coefficient of submerged nozzles displacement during its rapid change can be reduced from 0.6 – 1.3 to 0.4 – 1.0. It allows to reduce the load of the hydraulic drive of the casting system of CCM tundish in 1.2 – 1.3 times and to extend its terms of no-failure operation in the continuous of implementation of big series casting. The obtained data can be used in calculation and design of improved rapid change system of submerged nozzles.
About the Authors
S. P. Eron’ko
National Technical University of Donetsk (58, Artema str., Donetsk, 83000, Ukraine)
Russian Federation
Russian Federation
Dr.Sci. (Eng.), Professor, Head of Chair “Mechanical Equipment of Ferrous Metallurgical Plants”
E. V. Oshovskaya
National Technical University of Donetsk (58, Artema str., Donetsk, 83000, Ukraine)
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Аssist. Professor of the Chair “Mechanical Equipment of Ferrous Metallurgical Plants”
M. Yu. Tkachev
National Technical University of Donetsk (58, Artema str., Donetsk, 83000, Ukraine)
Russian Federation
Russian Federation
Postgraduate of the Chair “Mechanical Equipment of Ferrous Metallurgical Plants”
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Review
For citations:
Eron’ko S.P., Oshovskaya E.V., Tkachev M.Yu. INVESTIGATION AND IMPROVEMENT OF THE RAPID CHANGE SYSTEM OF SUBMERGED NOZZLE OF SLAB CCM TUNDISH. Izvestiya. Ferrous Metallurgy. 2016;59(1):49-56. (In Russ.) https://doi.org/10.17073/0368-0797-2016-1-49-56
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