中文摘要：

采用ANSYS软件，建立了轴类零件高频感应加热过程的三维和二维电热磁耦合模型，计算了感应加热过程的温度场分布。结果表明，在相同的加载条件下，二维与三维模型热分布情况类似。但三维模型中的最高温度及径向传热速率均高于二维模型；三维模型的轴向传热速率比二维模型低。随着加载电流密度的增大，二维模型和三维模型的差别越来越明显，同时模型的辐射也越来越大；在相同的加载条件下，表层辐射对三维模型温度分布影响更显著。

英文摘要：

By ANSYS software, 3D and 2D model of the shaft parts during induction heating were established. The distribution of temperature field during induction heating was calculated. The results show that at the same loading condition, the thermal distribution of 2D and 3D model is similar. But the highest temperature and the radial heat transfer rate of 3D model are higher than that of the 2D model, the axial heat transfer rate of 3D model is lower than that of 2D model. With the load of current density increasing, the 2D model and 3 D model have more differences, and the radiation of model is more and more obvious, under the same load condition, the surface radiation of 3D model has more significant effects on temperature distribution.