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http://dx.doi.org/10.3795/KSME-A.2008.32.7.602

Process Optimization of Industrial Solid Freeform Fabrication System  

Kwak, Sung-Jo (한국과학기술원 기계공학)
Lee, Doo-Yong (한국과학기술원 기계공학)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.32, no.7, 2008 , pp. 602-609 More about this Journal
Abstract
This paper presents experimental optimization of process parameters for a newly developed SFF(Solid Freeform Fabrication) system. Two critical process parameters, layering thickness and curing period, which have a large effect on the quality of the product, are optimized through experiments. Specimens are produced using layering thicknesses of 60, 80, 100, 120, 140, and $160\;{\mu}m$ and curing periods of 0, 10, 20, and 30 minutes under the same processing conditions, i.e., build-room temperature, feed-room temperature, roller speed, laser power, scan speed, and scan spacing. The specimens are tested to compare and analyze performance indices such as thickness accuracy, flatness, stress-strain characteristics, and porosity. The experimental result indicates that layering thickness of $80{\sim}100\;{\mu}m$ and curing period of $20{\sim}30$ minutes are recommended for the developed industrial SFF system.
Keywords
Solid Freeform Fabrication System; Selective Laser Sintering; Process Control;
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