金属3D打印数字化制造研究进展

刘壮壮, 丁明路, 谢建新

Advancements in Digital Manufacturing for Metal 3D Printing

LIU Zhuangzhuang, DING Minglu, XIE Jianxin

表1 金属3D打印过程在线监测常用传感器

Table 1 Common sensors for in-situ monitoring in metal 3D printing

Type Object Advantage Disadvantage Profilometer Profiling of powder bed Easy installation High cost Infrared camera Thermal radiation of molten pool Intuitive results with rich information retrieval High resolution, high equipment cost Pyrometer Thermal radiation of molten pool High accuracy and rapid response High cost High-speed camera Molten pool morphology, thermal images, and geometric dimensions Lower cost and extended measurement range Optical filters required Acoustic emission Defects High sensitivity, nondestructive monitoring, and low cost Lower accuracy in high-noise conditions Synchrotron X-ray Dynamic behavior of molten pool Real-time observation High cost, complex equipment, limited commercial viability Spectrometer Spattering Wide measurement range High cost