双辊薄带铸轧熔池温度场的在线计算模型

合理简化双辊薄带铸轧的熔池换热边界条件，采用热平衡法推导出熔池温度场的计算模型.该模型考虑了浇铸温度、铸轧速度、辊缝、铸辊温度等工艺参数对熔池温度场的影响，其计算速度和计算精度能够满足实时在线控制要求.根据模型计算结果分析了影响熔池温度场的主要因素，得到了铸轧在线控制的深层规律，并在多次的铸轧实验中验证了模型的正确性.

Online Temperature Field Calculation of Molten Pool During Twin-Roll Strip Casting

By simplifying reasonably the heat transfer boundary conditions of molten pool in twin-roll strip casting, the temperature field model of molten pool was deduced by thermal balance method. The effects of casting temperature, casting speed, gap and casting rolls temperature on molten pool temperature field were considered in the model. The model's computing speed and accuracy satisfied the requirement of real-time on-line control. The main factors that affect the molten pool were discussed based on the calculation results and the on-line control rules in twin-roll strip casting were obtained. The correctness of model was verified in twin-roll strip casting experiments.