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Thermal modeling of the quench at BurnsHarbor utilizing on-line characterization of cooling*

Published online by Cambridge University Press:  04 November 2011

J.-L. Borean ,
C. Romberger ,
P.-S. Manga ,
T. Petesch  and
A. Daubigny
J.-L. Borean
Affiliation:
ArcelorMittal R&D Maizières, BP 30320, 57283 Maizières les Metz, France. e-mail: jean-luc.borean@arcelormittal.com
C. Romberger
Affiliation:
ArcelorMittal R&D East Chicago, 3001 E. Columbus Drive, East Chicago, IN 46312, USA; e-mail: charles.romberger@arcelormittal.com
P.-S. Manga
Affiliation:
ArcelorMittal R&D Maizières, BP 30320, 57283 Maizières les Metz, France. e-mail: jean-luc.borean@arcelormittal.com
T. Petesch
Affiliation:
ArcelorMittal R&D Maizières, BP 30320, 57283 Maizières les Metz, France. e-mail: jean-luc.borean@arcelormittal.com
A. Daubigny
Affiliation:
ArcelorMittal R&D Maizières, BP 30320, 57283 Maizières les Metz, France. e-mail: jean-luc.borean@arcelormittal.com
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Abstract

In order to limit the thermal gradient of plates during quenching and limit flatness issues, it is necessary to control the cooling. This control requires the knowledge of the cooling performances of the cooling device. This paper describes the equipments and procedure we developed for the on-line characterization of quenching. We illustrate the application of this methodology to the quench of Burns Harbor. After the austenitzing furnace, this quench is equipped with 3 cooling sections that have been characterized for several flow rates, for several speeds of plates and for the top and bottom sides of plates. Thanks to the collected data, heat fluxes have been calculated and correlations describing the cooling performances of the equipment have been built. These correlations have been implemented in a thermal model that gives the thermal state of a plate during cooling according to parameters like thickness of the plate, flow rates of the cooling sections, speed of the plate, and temperature after heating. Experimental and numerical results are discussed.

Keywords

CoolingHeat fluxon-line characterizationthermal modelingRefroidissementdensité de fluxcaractérisation en lignemodélisation thermique
Type
Research Article
Information
Metallurgical Research & Technology , Volume 108 , Issue 3 , 2011 , pp. 165 - 174
Copyright
© EDP Sciences, 2011

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