Binder Jetting Additive Manufacturing: The Effect of Feed Region Density on Resultant Densities
Binder Jetting Additive Manufacturing: The Effect of Feed Region Density on Resultant Densities
复制标题
粘合剂喷射增材制造：进料区域密度对最终密度的影响
DOI：
10.1115/1.4054453
复制
发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Ma, Chao
中科院分区：
文献类型：
--
作者：
Porter, Quinton;Li, Ming;Pei, Zhijian;Ma, Chao
本文报道了在粘结剂喷射添加剂生产过程中，喂料区密度对烧结密度和中间密度(粉层密度和坯料密度)的影响的实验研究。通过压实提高了喂料区密度。通过测量粉料的质量和尺寸，确定了粉床密度和坯料密度。用阿基米德法测量了材料的烧结密度。当相对喂料区密度从44%增加到65%时，粉层密度增加了5.7%，坯料密度增加了8.5%，最终烧结密度增加了4.5%。统计检验表明，这些影响是显著的。研究表明，在喂料区压制粉末是改变粘结剂喷射添加剂制造零件密度的一种有效方法。
This technical brief reports an experimental investigation on the effect of feed region density on resultant sintered density and intermediate densities (powder bed density and green density) during the binder jetting additive manufacturing process. The feed region density was increased through compaction. The powder bed density and green density were determined by measuring the mass and dimension. The sintered density was measured with the Archimedes’ method. As the relative feed region density increased from 44% to 65%, the powder bed density increased by 5.7%, green density by 8.5%, and finally sintered density by 4.5%. Statistical testing showed that these effects were significant. This study showed that compacting the powder in the feed region is an effective method to alter the density of parts made via binder jetting additive manufacturing.