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Abstract

We are trying to build an offline direct fired furnaces model in order to control the steady state operating conditions of the furnace, and to minimize the time of transient state conditions. The existing statistical model is usable only if operating conditions (ie emissivity and heating cycle) belongs to the range of statistical data. The surface state changes from one strip to another, and also within one strip. The reasons is that the amount of oil from cold rolling is not constant. We have shown the influence of the surface state of the strip on its emissivity, in industrial as well as in laboratory conditions. A relation linking emissivity and temperature has been proposed. This relation is connected to the pyrolysis kinetics of oil, for a representative sample. A physical model which describes heat transfer fairly well has been developed. The use of this model combined with the proposed relation for emissivity gives close results, compared with industrial data. This model is not easy enough to use to allow its immediate industrial application. Nevertheless it will further improve the statistical model.

Additional information

Authors: DELAUNAY D, Institut de Recherches de la Sidérurgie Française, Maizières-lès-Metz (FR);MULLER J, Institut de Recherches de la Sidérurgie Française, Maizières-lès-Metz (FR);BOUCHARD P, Institut de Recherches de la Sidérurgie Française, Maizières-lès-Metz (FR);MICQUE N, Institut de Recherches de la Sidérurgie Française, Maizières-lès-Metz (FR);PHILIPPE J, Institut de Recherches de la Sidérurgie Française, Maizières-lès-Metz (FR);KRAUTH P, Institut de Recherches de la Sidérurgie Française, Maizières-lès-Metz (FR)
Bibliographic Reference: EUR 15746 FR (1996) 42pp., FS, ECU 7
Availability: Available from the (2)
ISBN: ISBN 92-827-6545-8
Record Number: 199410736 / Last updated on: 1996-04-23
Category: PUBLICATION
Original language: fr
Available languages: en,de,fr