Effect of Process Parameters on the Deposition Size of Polylactic Acid Filament

被引：0
作者：
Wang Z. [1 ]
Chen Y. [1 ]
Li H. [1 ]
机构：
[1] College of Materials Science and Engineering, Zhengzhou University, Zhengzhou
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2024年 / 40卷 / 04期
关键词：
filament size; fused deposition molding; numerical simulation; printing precision; process parameters;
D O I：
10.16865/j.cnki.1000-7555.2024.0061
中图分类号：
学科分类号：
摘要：
The change of filament size in fused deposition modeling (FDM) has an important influence on the printing precision. In this paper, the diameter changes of PLA single filament during FDM process from nozzle extrusion to deposition solidification were studied by experimental and numerical simulation methods. According to the characteristics of FDM process, the effects of process parameters (nozzle temperature, extrusion speed, printing speed, layer height) on the diameter of filament near the nozzle, extrusion expansion stage, stretching stage and deposition stage were quantitatively analyzed. The results show that increasing the nozzle temperature, increasing the extrusion speed and reducing the layer height are very helpful to adjust the dimensional stability of filament during printing process and improve the precision of the printed parts. Finally, by using the diameter formula during deposition and solidification, the "precision experiment" of filament diameter compensation is done, and the dimensional accuracy of printed products is improved by 74.1 % after compensation. © 2024 Sichuan University. All rights reserved.
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页码：104 / 110
页数：6
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