中南大学学报（自然科学版）2016，Vol.47Issue(11)：3642-3647,6.DOI:10.11817/j.issn.1672-7207.2016.11.004
金属材料喷射沉积3D打印工艺
Three-dimensional printing technology based on metal spray and deposition
摘要
Abstract
A three-dimensional printing (3DP) method was demonstrated based on spray and deposition techniques to advance the development in China's manufacturing industry and to address the high cost and low efficiency problems of the existing metal 3D printing technologies. Using a 3D-computer aided drawing (CAD) model-driven computer numerical control (CNC) system, multi-species, small quantities, and complex metal parts can be manufactured directly using 3DP. Single-channel and single-layer forming experiments were conducted on Sn-Bi alloy to examine the influence of different nozzle apertures, nozzle speeds, aspiration speed, forming paths, and lapping rate on track forming and the surface morphology. The 3DP method was then used for block forming; the fracture morphology of the structure was evaluated. The results show that the single-channel forming track has better uniformity under the following conditions:a nozzle aperture of 0.6 mm, an aspiration speed of 10 mL/min, and a nozzle speed of 10 mm/s;When use the S-shaped path and the path overlap rate is 50%, the formed single-layer surface quality is better;The 3DP technology bases on spray and deposition allows for fast and efficient manufacture of metal parts. The forming efficiency is 50 cm3/h, which is two to three-fold that of existing metal 3DP technologies.关键词
3D打印/喷射沉积/铋锡合金Key words
three-dimensional printing (3DP)/spray and deposition/Sn-Bi alloy分类
机械制造引用本文复制引用
单忠德,杨立宁,刘丰,戎文娟,刘倩..金属材料喷射沉积3D打印工艺[J].中南大学学报（自然科学版）,2016,47(11):3642-3647,6.基金项目
机械科学研究总院技术发展基金项目(201406)(Project(201406) supported by the Technical Development Fund Project of China Academy of Machinery Science&Technology) （201406）
