Abstract
Abstract
Utilizing the ANSYS finite element analysis software, a three-dimensional heat transfer finite element model for the SLS forming process of nylon PA2200 powder was constructed. The APDL parametric language was employed to control the movement of the Gaussian heat source, enabling numerical simulations of the temperature field during the single-layer, single-pass sintering process. Through numerical simulation analysis, the varying pattern of the melting width was derived. Based on the optimal overlap rate required for satisfactory SLS forming quality, the optimal parameter combination for nylon PA2200 powder sintering was determined to be a laser power of 40 W, a scanning speed of 5000 mm/s, a layer thickness of 0.12 mm, and a preheating temperature of 165°C. These findings provide valuable insights for optimizing the SLS process and enhancing the quality of the final sintering parts.