Abstract：Based on the powder feeding 3D printer forming technology, the particles are pressed into the screw-screw conveyor to generate pressure-extrusion material extrusion nozzles, which are then processed by the slicing software and transferred to the powder feeding 3D printer on the upper layer of the printing platform. The stacked body is formed into a green body structure, and then the product is obtained through a degreasing-sintering process. In the sintering process, three different atmospheres, N2, N2+H2, and vacuum, are introduced to influence the density, yield strength, hardness, elongation, sintering density, and relative density of the metal body. Experiments show that the vacuum sintering atmosphere is good for the density, sintered density, elongation, and hardness of the metal products. And N2 and N2+H2 atmospheres have good effects for the hardness of metal products, but products are easy to be damaged.
汪传生，蔡 宁，王虎子，晁宇琦，张 伟. 不同气体条件对3D打印成形坯体烧结的影响[J]. 粉末冶金工业, 2019, 29(05): 22-26.
WANG Chuan-sheng,CAI Ning, WANG Hu-Zi, CHAO Yu-Qi, ZHANG Wei. Effects of different gas conditions on sintering of 3D printing molding. Powder Metallurgy Industry, 2019, 29(05): 22-26.
2019, Vol. 29 
