INFLUENCE OF STEEL TREATMENT COURSE AT UNITS OF SECONDARY METALLURGY ON THE MICROCLEANNESS OF AL-KILLED STEELS

1 SOCHA Ladislav
Co-authors:
2 HUCZALA Tomáš 1 MICHALEK Karel 2 KALETA Jaromír 1 ZWYRTEK Jaroslav
Institutions:
1 VŠB-Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Department of Metallurgy and Foundry, 17. listopadu 15/2172, 708 33 Ostrava - Poruba, Czech Republic, EU ladislav.socha@vsb.cz, karel.michalek@vsb.cz, jaroslav.zwyrtek@vsb.cz
2 TŘINECKÉ ŽELEZÁRNY, a.s., Průmyslová 1000, Staré Město, 739 61 Třinec, Czech Republic, EU Tomas.Huczala@trz.cz, Jaromir.Kaleta@trz.cz
Conference:
26th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 24th - 26th 2017
Proceedings:
Proceedings 26th International Conference on Metallurgy and Materials
Pages:
222-228
ISBN:
978-80-87294-79-6
ISSN:
2694-9296
Published:
9th January 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
46 views / 12 downloads
Abstract

The paper presents the results of operating experiments focused on the study of the formation and modification of non-metallic inclusions during treatment of aluminium-killed steels at units of secondary metallurgy. The process melts were focused on analysis of the influence of deoxidizing and slag-making agents and wear of the lining on the steel microcleanness. The experiments were aimed at studying the patterns of formation, origin and conditions of elimination of non-metallic inclusions during treatment of steels on the homogenization station and ladle furnace. The actual evaluation of microcleanness was executed by means of SEM microscope. The results present the number, ratio and analysis of chemical composition of non-metallic inclusions including their plotting in ternary diagrams. The evaluation indicated in the paper represents basic information on the achieved microcleanness, and thus also the produced steel quality.

Keywords: steel, slag, secondary metallurgy, microcleanness, non-metallic inclusions
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