本文通过模拟研究,得出了冲天炉过热区内对铁水的四种传热方式的传热系数。四种传热方式中,焦炭对铁水的接触传热与辐射传热共占85％左右,焦炭表面燃烧温度的高低对热交换有决定性的影响。焦炭表面温度与炉气温度有较大差别,它主要受焦炭性能影响,是衡量铸造用焦炭质量的一项不可替代的综合性指标。 In this paper, through simulation study, the heat transfer coefficient of four heat transfer modes of hot metal in cupola superheated zone was obtained. Among the four heat transfer modes, the contact heat transfer and radiation heat transfer of coke to hot metal accounted for about 85%, and the combustion temperature of coke surface had decisive influence on the heat exchange. Coke surface temperature and furnace gas temperature are quite different, it is mainly affected by the coke performance, is a measure of the quality of foundry coke an irreplaceable comprehensive index.