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IMPROVING OF HEATS’ THERMAL PROPERTIES IN THE PRODUCTION OF TOOL STEELS IN ELECTRIC ARC FURNACE AND DURING THEIR SECONDARY METALLURGY PROCESSING

1 JONŠTA Petr
Co-authors:
1 SUŠOVSKÝ Michal 1 CARBOL Zdeněk 2 MELECKÝ Jan 3 MACHOVČÁK Pavel 4 GRYC Karel 4 SOCHA Ladislav 4 TKADLEČKOVÁ Markéta 4 MICHALEK Karel 1 BARCZIKOVÁ Petra
Institutions:
1 VITKOVICE HEAVY MACHINERY a.s., Ostrava, Czech Republic, EU
2 Bilovec, Czech Republic
3 ArcelorMittal Engineering Products Ostrava s.r.o., Ostrava, Czech Republic, EU
4 VSB-Technical university of Ostrava, Faculty of Metallurgy and Materials Engineering, Ostrava-Poruba, Czech Republic, EU
Conference:
25th Anniversary International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 25th - 27th 2016
Proceedings:
Proceedings 25th Anniversary International Conference on Metallurgy and Materials
Pages:
173-178
ISBN:
978-80-87294-67-3
ISSN:
2694-9296
Published:
14th December 2016
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
615 views / 366 downloads
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Abstract

This article deals with production technology and secondary metallurgy processing of tool steels in electric steelworks of VÍTKOVICE HEAVY MACHINERY a.s. with the focus on thermal and slag regulation of heats. During the production and secondary metallurgy steel processing of a trial heat so-called „programme thermo-time steel processing technology“ (PTVO) was used.In its evaluation, the attention was mainly focused on the steel production – technological parameters of 100CrMo7 steel. At the trial melting based on the liquidus temperature, the optimal degree of overheating of the steel melt, and also in the framework of the evaluation comparison with the thermal regime of heats of the same kind of steel with common technology was performed.When evaluating the slag regime, the attention was mainly focused on the composition of refining slags and the course of desulphurisation of the steel melt.

Keywords: tool steels, programme thermo-time steel processing technology, refining slags, desulphurisation

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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