基于计算机技术45钢激光熔覆工艺的数值模拟

Numerical Simulation of Laser Cladding Process for Steel 45 Based on Computer Technique

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。

Abstract：A finite element model of three layers laser cladding process with the size of 30 mm× 20 mm×4 mm was created, and the temperature and stress field of laser cladding process were simulated successfully. The results show that the node temperature gradually increases with the increase of cladding layer numbers, and the maximum residual stress is near the junction of the cladding layer and the base metal, Deformation is small after the end of the laser cladding. And this has provided a theoretical basis for the optimization of the laser cladding process parameters.