中文摘要：

针对双辊薄带铸轧工艺熔池界面换热规律问题,基于铸轧浇铸工艺的特点以Kiss点为界将熔池接触区分为软接触区和刚性接触区两部分,建立新的界面换热模型;通过6061铝合金界面换热实验,以及Procast软件的反向求解模块Inverse推导得出铸轧界面换热系数和热流密度随时间的变化规律,并利用铸轧实验验证了模型的精确度。结果表明,熔池区界面换热分布规律与铸轧速度、浇铸温度、Kiss点位置、材料的热物性参数及辊面粗糙度等因素均有关。

英文摘要：

Aimed at the heat transfer law of the molten pool interface in twin-roll strip casting process, the contact region between the molten pool was distinguished into two parts： soft contact zone and the rigid contact zone with the border of Kiss point, based on the characteristics of casting process, the new interface heat transfer model was established. The change of heat transfer coefficient and heat flux of the cast rolling interface with time was derived by the 6061 Al alloy interface heat exchange experiments and the reverse solution module inverse of Pro CAST software, the accuracy of the model was verified by casting rolling experiment. The results show that the distribution of interfacial heat transfer in the molten pool was related to the casting speed, casting temperature, the position of Kiss point, the thermal physical parameters of the material and the roughness of the roll surface.