Browsing by Subject "recycle rate"

Now showing 1 - 1 of 1

Improvement of Recycle Rate in Laser Sintering by Low Temperature Process
(University of Texas at Austin, 2017) Kigure, T.; Niino, T.
Laser sintering process selectively solidifies its powder bed to obtain designated parts and leaves the rest unsolidified. When the remained powder is recycled, a certain amount of fresh powder is added to moderate the effect of deterioration by preheating in the previous batch. In terms of economy, improvement of the recycle rate of used powder is one of the big challenges. The authors are developing a novel laser sintering process that prevents part being processed from warping not by preheating the powder bed but by anchoring the parts to a rigid base plate. Since the new process, namely low temperature process, can lower the bed temperature than normal high temperature process, it is expected to reduce deterioration of the used powder. In present research, processablity of recycled powder is evaluated by its MFR, and it is shown that operation at a high recycle rate more than 90% is possible.