Abstract: The temperature distribution of grain oriented silicon steel coil in ring furnace was analyzed by the model of temperature field in ring furnace. The influence on silicon steel’s property from the temperature field was discussed. The result showed that，there was an obvious temperature difference at different positions of the steel coil during heating stage, which affects the secondary recrystallization process of the oriented silicon steel, and then leads to the difference of the magnetic properties of the oriented silicon steel.

Key words: grain oriented silicon steel, magnetic property, ring annealing furnace, temperature field