Modelling of slab heating in walking beam furnace with skidmarks

This reheating model depicts the reheating of steel slabs in a walking beam furnace with all process-related characteristics. Only a few simplifications were made (e.g. assumption of symmetry) and in particular phenomena such as gas radiation and temperature-dependent material data were taken into account.

With this model, influences by the emission coefficients of the furnace inner wall (impurity influence), the slab surface (oxidation influence) and the alloy composition could be mapped in parameter studies.

Furthermore, the heat dissipation was mapped by the walking beam transport system of the furnace. This leads to a temperature inhomogeneity both on the underside and in the core of the slab, which can lead to problems in the subsequent forming process (see pictures).