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Title |
Evaluation of Binder Jetting 3D Printed Specimens Using Vacuum Impregnation
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Authors |
박광민(Kwang-Min Park) ; 박수현(Su-Hyeon Park) ; 이봉춘(Bong-Chun Lee) ; 노영숙(Young-Sook Roh) |
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DOI |
https://doi.org/10.11112/jksmi.2020.24.2.103 |
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Keywords |
적층제조; 3D 프린팅; 바인더젯; 진공함침; 후처리 공법 Additive Manufacturing; 3D Printing; Binder Jetting; Vacuum Impregnation; Post-processing |
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Abstract |
This study examined the applicability of the vacuum impregnation post-processing to enhance the strength of binder jet 3D printed output. In addition, permeability, bulk density, and compressive strength of 10 mm, 20 mm, 30 mm, and 40 mm cubic specimens were examined to check the strength limit depending on the 3D prined output size. In result, as the maximum pressure increased, the post-processing storage solution permeated to the inside of the 3D printed sample and thus the permeation area ratio was improved. The compressive strength and the permeation area indicate the correlation between the exponential function of the adjusted R-square factor 0.992. In addition, the bulk density was increased, which can be inferred as the post-processing solution permeated to the inside. In conclusion, in order to enhance the compressive strength of the binder jet 3D printed output, it is essential to permeate the post-processing solution to the inside of the output, and vacuum impregnation can be proposed as an effective method.
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