Investigation of the Oxidation Kinetics of Steel during Its Preliminary Roasting before Enameling

O. R. Lazutkina^a , P. I. Buler^b , A. K. Kazak^c , and N. B. Mullagalieva^a

^a VPO Ural State Technical University–Ural Polytechnical Institute,
ul. Mira 19, Yekaterinburg, 620002 Russia
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^b Erlangen University, Nurenberg, D-81058 Erlangen Martenstrasse 5, Deutschland

^c State Scientific Center, OAO Ural Institute of Metals,
ul. Gagarina 14, Yekaterinburg, 620062 Russia

Received January 28, 2005

Abstract — The oxidation kinetic peculiarities of traditional and prospective steels utilized in manufacturing hot-rolled enameled pipes are considered. The oxidation conditions, as well as its limiting stages, in a temperature range of 500–900°C, are determined. The x-ray diffraction analysis was applied to determine the composition of the scale formed. Ways of selecting the optimum temperature–time conditions of roasting the metal before its enameling are recommended.