Development of a Powder Material Deposition Unit and Process Parameters Identification for Selective Vacuum Manufacturing Rapid Prototyping

Authors

  • Sitichai Khodprom Department of Industrial Engineering, Faculty of Engineering at Sriracha, Kasetsart University, Sriracha Campus, Chonburi 20230, Thailand.
  • Nattawat Songkrod Department of Industrial Engineering, Faculty of Engineering at Sriracha, Kasetsart University, Sriracha Campus, Chonburi 20230, Thailand.
  • Thittikorn Phattanaphibul Department of Industrial Engineering, Faculty of Engineering at Sriracha, Kasetsart University, Sriracha Campus, Chonburi 20230, Thailand.

Keywords:

material deposition, poly-lactic acid, powder, rapid prototyping, selective vacuum manufacturing

Abstract

Selective vacuum manufacturing (SVM) is an inexpensive, rapid prototyping technique that applies sand casting and powder sintering processes to fabricate a prototype layer by layer. Poly-lactic acid (PLA) powder, a biodegradable polymer, was considered for part material of SVM, in particular for tissue scaffold fabrication. Previous studies illustrated a problem with incomplete PLA powder deposited in the created cavity due to clogging at the nozzle's tip. The objective of this paper was to develop a new powder material deposition unit for SVM. A pneumatic cylinder was adopted to provide vertical vibration that can prevent the clogging problem more effectively. The nozzle size and the air pressure used for its operation were varied to identify the suitable process parameters. The results illustrated that using a nozzle size of 18G (internal diameter 0.90 mm) and air pressure of 0.5 bar could provide an average flow rate of 4.312 ± 0.555 mg.s-1 without flow problems.

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Published

2015-12-31

How to Cite

Khodprom, Sitichai, Nattawat Songkrod, and Thittikorn Phattanaphibul. 2015. “Development of a Powder Material Deposition Unit and Process Parameters Identification for Selective Vacuum Manufacturing Rapid Prototyping”. Agriculture and Natural Resources 49 (6). Bangkok, Thailand:905-12. https://li01.tci-thaijo.org/index.php/anres/article/view/243796.

Issue

Vol. 49 No. 6 (2015): November-December

Section

Research Article

License

online 2452-316X print 2468-1458/Copyright © 2022. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/),
production and hosting by Kasetsart University of Research and Development Institute on behalf of Kasetsart University.