INFLUENCE OF THE REMAINING WATER LAYER ON THE COOLING OF MOVING STEEL SURFACES

1 RESL Ondřej
Co-authors:
1 POHANKA Michal
Institution:
1 Brno University of Technology, Faculty of Mechanical Engineering, Brno, Czech Republic, EU, ondrej.resl@vut.cz
Conference:
30th Anniversary International Conference on Metallurgy and Materials, Brno, Czech Republic, EU, May 26 - 28, 2021
Proceedings:
Proceedings 30th Anniversary International Conference on Metallurgy and Materials
Pages:
288-293
ISBN:
978-80-87294-99-4
ISSN:
2694-9296
Published:
15th September 2021
Proceedings of the conference have already been published in Scopus and we are waiting for evaluation and potential indexing in Web of Science.
Metrics:
532 views / 292 downloads
Abstract

Steel is an integral part of today's life. To obtain the desired mechanical properties of hot rolled steel plates or strips, it is necessary to predict and control the cooling process. Cooling of a hot rolled strip on a run-out table or in a continuous annealing line is commonly realized by laminar and spray cooling, and involves a large amount of water, which impinges on the hot surface of the steel. Water is accumulated on the upper surface, which means the jets do not have a direct impact on the steel surface and the cooling intensity is changed. The cooling process is also affected by the remaining water layer that remains on the surface after cooling. This thin layer occurs both on the upper and the bottom surface, and also for light sprays. The remaining water can significantly influence the final temperature of the steel strip if the target temperature is below 500 °C. In this article, the effect of remaining water on cooling is experimentally investigated. A full cone spray nozzle is used for the measurements and the cooling in different areas (under the nozzle, outside the nozzle spray) is studied.

Keywords: Steel, remaining water, cooling, heat transfer coefficient

© 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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