Research progress in numerical modeling of laser cladding

LU Cai-bin, LI Xin-mei, ZHAO Hai-yang
（College of Mechanical Engineering, Xinjiang University, Wulumuqi, 830047, China）

Abstract: Aiming at the problem of parameters selection and the establishment of the numerical model in laser cladding process, numerical model of laser cladding were studied at various stages. The main process of powder fluid dynamics model, the molten pool model and the cladding layer model were summarized, the development process of each model was proposed under the condition of considering various factors. The performance of laser cladding layer was evaluated and analyzed on the basis of input and output parameters and output precision. The results indicate that the numerical model of each stage needs to establish a stable model under the consideration of appropriate process parameters and comprehensive factors, the favorable model can provide a reference basis for the experimental study of laser cladding and the numerical model study of preset powder system, and it has a certain practical significance to detect the defects of laser cladding process online by numerical simulation.
Key words: laser cladding; numerical modeling; powder fluid dynamics model; molten pool model; cladding layer model