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中文摘要：
采用三维弹塑性有限元方法建立了Inconel 718合金圆钢在14个道次热连轧过程中的热力耦合分析模型，并在方坯初始温度为960～1000℃，初始速度为0．15～0．25m·s^-1的范围内模拟了轧件中间断面特征点的温度变化。结果得出，轧件芯部温度随初始温度的降低和初始速度的升高而升高；随轧制道次的增加，因初始温度不同而导致的轧件芯部温度的差异会越来越小，但因初始速度不同而导致的轧件芯部温度差异始终存在。
英文摘要：
A coupled thermo-meehanieal model for calculating the laws of temperature field evolution has been developed on fourteen-pass hot continuous rolling of Inconel 718 alloy round rod using 3D elastic-plastic FEM. Temperature of characteristic analysis points in the intermediate cross-section of the workpiece has been simu- lated during the original temperature range 960-1000℃ and the original velocity range 0.15-0.25m.s^-1 , the influence of rolling parameters（original temperature and original velocity of the billet）on temperature variation has been analyzed and different cooling modes have been discussed for different rolling parameters. The simulated surface temperature has a good agreement with the measured one during an actual roiling process.
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