Publication detail
Water Temperature Effect on Cooling Intensity for high Pressure Descaling Nozzles
POHANKA, M. RAUDENSKÝ, M. HWANG, J. YOU, J. LEE, S.
English title
Water Temperature Effect on Cooling Intensity for high Pressure Descaling Nozzles
Type
Other unclassified results
Language
en
Original abstract
During continuous production in rolling mills, the hot steel is exposed to an oxidative atmosphere and oxide layers are formed on the surface. The oxide scale is typically removed using flat fan water nozzles fed by high pressure water in a process of hydraulic descaling. Use of these nozzles causes very intensive cooling, which is in most cases objectionable. One way to decrease this intensive cooling is to use water at a higher temperature. Laboratory experiments were conducted to study the degree of influence the water temperature has on the heat transfer coefficient during cooling using the high pressure nozzles. Temperature measurements during descaling were used as input for inverse algorithm calculations. The heat transfer coefficients together with surface temperatures were computed as a function of time and position. The results obtained for various water temperatures were compared and a slight decrease in the cooling intensity was found for higher water temperatures. The reason for this is discussed.
Keywords in English
nozzle, high pressure, descaling, water temperature, cooling, heat transfer coefficient
Released
2014-03-12
Publisher
IOM Communications Ltd
Location
London, UK
Pages from–to
71–74
Pages count
4
BIBTEX
@misc{BUT106991,
author="Michal {Pohanka} and Miroslav {Raudenský} and J.Y. {Hwang} and J.W. {You} and S.H. {Lee}",
title="Water Temperature Effect on Cooling Intensity for high Pressure Descaling Nozzles",
year="2014",
pages="71--74",
publisher="IOM Communications Ltd",
address="London, UK",
note="Other unclassified results"
}