3D打印技术在航空伞箱制造中的应用

Application of 3D printing technology in aviation umbrella box manufacturing

阐述了国内外3D打印技术研究与应用现状和激光选区熔化技术成形特点。以航空航天制造领域铝合金薄壁伞箱为典型案例,围绕激光选区熔化工艺中如何控制变形零件、保证质量为关键点,从添加辅助支撑、工艺参数设置、退火处理及三维扫描检测等方面开展应用研究。结果表明:通过科学设计辅助支撑、合理设置工艺参数和规范热处理,能够减少激光选区熔化中零件变形及其他缺陷产生。

Firstly,the research and application status of 3D printing technology at home and abroad and the characteristics of laser selective melting technology were described.Then,taking the aluminum alloy thin-wall parachute box in the field of aerospace manufacturing as a typical case,around the key point of how to control the variable part shape to ensure the quality in the laser selective melting process,the application research was carried out from the aspects of adding auxiliary support,process parameter setting,annealing heat treatment,three-dimensional scanning detection and so on.Finally,it is shown that the deformation and other defects in laser selective melting can be reduced by scientific design auxiliary support,reasonable setting of process parameters and standardized heat treatment.