OPTIMIZATION OF SECONDARY COOLING DURING CONTINUOUS CASTING OF STEEL SLABS

1 DUDA Jiří
Co-authors:
2 ČAMEK Libor 1 MASARIK Miloš
Institutions:
1 VÍTKOVICE STEEL, a.s., Štramberská 2871/47, Ostrava, Czech Republic, EU
2 VŠB - Technical University of Ostrava, Ostrava, Czech Republic, EU, libor.camek@vsb.cz
Conference:
24th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, June 3rd - 5th 2015
Proceedings:
Proceedings 24th International Conference on Metallurgy and Materials
Pages:
86-90
ISBN:
978-80-87294-58-1
ISSN:
2694-9296
Published:
12th January 2015
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
66 views / 25 downloads
Abstract

The article describes an approach to decreasing the rejection rate of the steel plates due to the surface defects in the rolling mill achieved by optimization of air-water secondary cooling on the continuous casting machine (CCM) of steel. In context with the occurrence of the surface cracks on the steel plates a complex analysis of possible reasons causing the creation of monitored cracks was made. Control of all technological procedures, including setting parameters of the CCM, was introduced. On the basis of statistic evaluation of selected technological parameters and according to the occurrence of specific cracks on the steel plates, of which their character signalize the possibility to create the cracks due to effect of the secondary cooling, the calibration, nozzles replacement and adjustment of the casting parameters in this cooling area was performed. Optimization of secondary cooling adjustment was made for the steel grade S355.

Keywords: optimization, continuous casting, secondary cooling, steel slab, surface defects

© 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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