IMPACT OF OXIDE LAYER ON SPRAY COOLING INTENSITY AND HOMOGENEITY DURING CONTINUOUS CASTING OF THE STEEL

1 CHABIČOVSKÝ Martin
Co-authors:
1 RESL Ondřej 1 RAUDENSKÝ Miroslav
Institution:
1 Brno University of Technology, Faculty of Mechanical Engineering, Brno, Czech Republic, EU, Martin.Chabicovsky@vut.cz
Conference:
27th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 23rd - 25th 2018
Proceedings:
Proceedings 27th International Conference on Metallurgy and Materials
Pages:
69-74
ISBN:
978-80-87294-84-0
ISSN:
2694-9296
Published:
24th October 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
47 views / 21 downloads
Abstract

Formation of oxide layers on the surface is inherent part of steel production. The presence of the oxide layer primarily influences the surface quality and material losses during steel processing. The influence of the oxide layer on the cooling intensity and homogeneity is not frequently reported but even thin layers of oxides can significantly modify the cooling intensity. Although the cooling intensity is primarily affected by spray parameters as pressure and coolant impingement density, the influence of the oxide layer should be also considered for optimal setting and regulation of the secondary cooling zone. The influence of the oxide layer on the heat transfer coefficient and Leidenfrost temperature is investigated in this paper. Laboratory measurement compares the spray cooling of oxide-free steel surface and oxidized steel surface. Results of measurement also show the impact on the spray cooling homogeneity due to local breaking up of the oxide layer.

Keywords: Scale, oxide layer, heat transfer coefficient, spray cooling, Leidenfrost temperature
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