沈阳航空航天大学学报2026，Vol.43Issue(4)：28-34,7.DOI:10.3969/j.issn.2095-1248.2026.04.003
SLM过程中线性能量密度和保护气流方向对飞溅的影响
The influence of linear energy density and shielding gas flow direction on spatter in SLM process
摘要
Abstract
In order to study the molten pool and spatter behavior during selective laser melting,a high-speed camera monitoring platform was built.The high-speed camera was used to capture the melting images in the single-channel scanning process under different shielding gas directions and linear energy densities at different exposure times.An image processing method was proposed to process the collected melting process images.The characteristics of spatter under different linear energy density and shielding gas direction were analyzed from the aspects of spatter number,area and angle.It is found that compared with the linear energy density,the direction of the shielding gas direction has a more significant effect on the spatter characteristics.It is recommended to use a lower linear energy density(within an appropriate range)in the selective laser melting process combined with the reverse airflow direction to suppress the spatter.关键词
激光选区熔化/飞溅/熔池/线性能量密度/保护气流方向Key words
selective laser melting/spatter/molten pool/linear energy density/shielding gas flow direction分类
机械制造引用本文复制引用
刘琦,安达,李晓丹,张广权,山玥,杨光..SLM过程中线性能量密度和保护气流方向对飞溅的影响[J].沈阳航空航天大学学报,2026,43(4):28-34,7.基金项目
国家自然科学基金(项目编号:52375359) （项目编号:52375359）
沈阳市科学技术计划重大科技专项(项目编号:23-401-1-02). （项目编号:23-401-1-02）
