Interaction of rail steel melt with refractory lining
https://doi.org/10.17073/0368-0797-2021-7-484-487
Abstract
The rail steel properties are adversely affected by rigid non-metallic inclusions, containing aluminum oxides. Therefore, aluminum content is limited to 0.004 % wt. in rail steel grades. Aluminum can get into steel from charge materials and refractory lining. In this work, we’ve analyzed how the chemical composition of refractories used in rail steel making influence steel quality on example of one domestic enterprise. To determine the main types of non-metallic inclusions created in E76F rail steels, we have performed fractional gas analysis of the samples taken in various process steps. It was found that the slag composition after degassing changes insignificantly, while the most part of non-metallic inclusions in rail steel is represented by aluminates.
About the Authors
A. М. Grigor’ev
National University of Science and Technology “MISIS”
Russian Federation
Russian Federation
Anton М. Grigor’ev, Postgraduate of the Chair of Metallurgy of Steel, New Production Technologies and Metal Protection
4 Leninskii Ave., Moscow 119049
K. V. Grigorovich
National University of Science and Technology “MISIS”;
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Russian Federation
Russian Federation
Konstantin V. Grigorovich, Academician, Dr. Sci. (Eng.), Professor of the Chair of Metallurgy of Steel, New Production Technologies and Metal Protection, National University of Science and Technology “MISIS”, Head of the Laboratory of Materials Diagnostics, Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
4 Leninskii Ave., Moscow 119049;
49 Leninskii Ave., Moscow 119991
А. Yu. Em
National University of Science and Technology “MISIS”;
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Russian Federation
Russian Federation
Anton Yu. Em, Postgraduate of the Chair of Metallurgy of Steel, New Production Technologies and Metal Protection, National University of Science and Technology “MISIS”, Research Engineer of the Laboratory of Materials Diagnostics, Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
4 Leninskii Ave., Moscow 119049;
49 Leninskii Ave., Moscow 119991
A. O. Morozov
National University of Science and Technology “MISIS”;
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Russian Federation
Russian Federation
Anton O. Morozov, Postgraduate of the Chair of Metallurgy of Steel, New Production Technologies and Metal Protection, National University of Science and Technology “MISIS”, Research Engineer of the Laboratory of Materials Diagnostics, Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
4 Leninskii Ave., Moscow 119049;
49 Leninskii Ave., Moscow 119991
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Review
For citations:
Grigor’ev A.М., Grigorovich K.V., Em А.Yu., Morozov A.O. Interaction of rail steel melt with refractory lining. Izvestiya. Ferrous Metallurgy. 2021;64(7):484-487. (In Russ.) https://doi.org/10.17073/0368-0797-2021-7-484-487
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