通过对电弧炉从出钢到连铸结束的各阶段影响连铸用钢水温度的因素的研究，本文建立了连铸用钢水温度传热物理数学模型。经过与在天津轧钢三厂实际测量值的比较，模型计算值与实际测量值吻合较好。利用该模型对现行工艺提出的改进方案，保证连铸生产顺行并获得节能降耗的较好的效果。 Through the research on the factors affecting the temperature of molten steel in continuous casting from tapping to the end of continuous casting, a mathematical model of temperature and heat transfer in molten steel for continuous casting was established. After comparing with the actual measurement value of the third mill in Tianjin Steelmaking Plant, the calculated value of the model is in good agreement with the actual measured value. The improved scheme put forward by the model for the current technology is adopted to ensure the continuous production of continuous casting and the better effect of energy saving and consumption reduction.