A numerical simulation, developed to predict the temperature distribution and calculate the growth rale of the
oxide scale formed on the microalloyed low carbon steel during the laminar cooling of hot strip rolling, was
conducted by two-dimensional finite element method. The model takes into account the different thetmoPhYsical
properties of the multilayered oxide scales and the film boundary conditions for the water jet impingement zone
and the stable film boiling zone through the run-out table. Complied with the parabolic growth of the oxide
layers and the distribution of the oxide phase, it is found that the present of wustite (FeO) results in a significant
increase of the oxidalion rate. However. the parabolic rate constant for the simultaneous growth of the two ouler
layers of magnetite (FelO,) and hemaUle (FelOJ) reduce rapidly compared to thai of three-layer oxide scale.
The growth rates and temperature gradients predicted by the model can be employed to elucidate the formation
mechanism of oxide scales, as well as to analyse oxide scale failure.