About this Abstract |
Meeting |
Advances in Welding and Additive Manufacturing Research 2022
|
Symposium
|
Advances in Welding and Additive Manufacturing Research 2022
|
Presentation Title |
Numerical Simulation of Powder Flow and Deposition Process in Linear Spot Laser Cladding |
Author(s) |
Shuaibo Liu, Xianqing Yin, Keyan Wang |
On-Site Speaker (Planned) |
Shuaibo Liu |
Abstract Scope |
This paper introduces the theoretical and experimental results of line spot laser cladding, and realizes the preparation method of line spot high-efficiency laser cladding layer. A physical-mathematical model is established to describe the simulation process of line spot laser cladding, including powder transportation and heating process in the interaction of laser-powder-argon flow with coaxial dual-runner powder feeding, high-temperature powder particles entering the molten pool to form the cladding layer, fluid flow and material transfer in the molten pool. The velocity, temperature and spatial distribution of powder under different carrier gas flow rates were studied, and the carrier gas flow rate and defocus amount with the best powder convergence were determined. The formation of cladding layer was simulated. The mass of powder particles entering the molten pool were calculated by the powder temperature and spatial distribution. The effects of powder convergence degree and temperature on the formation of cladding layer under different defocus were studied. The experimental results show that the model is self-consistent and can provide a theoretical basis for the optimization of line spot laser cladding. |
Proceedings Inclusion? |
Undecided |