建立了尺寸为30mm×20mm×4mm的三层激光熔覆的有限元模型,并成功地对激光熔覆过程中的温度场和应力场进行了有限元模拟。结果发现:随熔覆层数的增加,结点温度逐渐增大,最大残余应力位于熔覆层与基体材料连接处,激光熔覆结束后的变形很小,同时为优化激光熔覆工艺参数提供了理论依据。 A three-layer laser cladding finite element model with a size of 30mm × 20mm × 4mm was established and the temperature and stress fields in the laser cladding process were successfully simulated by finite element method. The results show that the junction temperature increases with the increase of the number of cladding layers and the maximum residual stress is located at the junction of the cladding layer and the substrate. The deformation after the laser cladding is very small. At the same time, The theoretical basis.