NUMERICAL SIMULATION OF TEMPERATURE FIELD AND STRESS FIELD FOR COLD ROLLED COIL IN BELL TYPE ANNEALING

The temperature and thermal stresses are important parameters in the process of bell type annealing. The computational models of the temperature fields and stresses fields in the bell type annealing process were established by the methods of the finite difference method and the finite element method. The change event of temperature and thermal stresses in coils are quantitatively analyzed and compared with the measured results. The distribution regularities of temperature and thermal stresses in the process of bell type annealing are arrived at. This work could be a guidance for the optimization of annealing practice.