聚合物连注连轧成型中轧辊热平衡仿真分析

摘要

A theoretical model for heat balance of rollers during the continuous injection direct rolling process was established according to basic heat transfer theory,and then a simulation analysis was performed for heat balance of the roller.The results indicated that the heat transfer oil could reach the branch pipe in contact with the inner surface of the roller sleeve ata certain inlet flow rate,and no dead point was found.The flow rates kept uniformity from the inlet to the far ends of various tributaries.The temperature of roller surface was homogeneous with a deviation of 3 ℃ after the heat transfer oil was passed through.The design of oil channels is reasonable,and it can effectively adjust the temperature of the rollers.%根据传热学的基本理论建立了连注连轧成型技术中轧辊热平衡的理论模型,然后对轧辊的热平衡进行了仿真分析.结果表明,导热油以一定的进口流速能够到达与辊套内表面接触的支流管道,不会出现死点,而且在离入口远端各支流的流速基本均匀一致;轧辊表面的温度在通入导热油后温度变化均匀,温度差值在3℃以内,说明所设计的导热油道较合理,可以实现对轧辊热平衡的温度调节.