Chinese Journal of Lasers, Volume. 45, Issue 5, 502010(2018)
Effect of Powder Recycling on Hardness and Impact Toughness of Polyamide Formed by Selective Laser Sintering
Figures & Tables(8)
Fig. 1. (a) Shape and size of hardness samples; (b) shape and size of impact samples;(c) schematic of sample forming direction
Fig. 2. Morphology of PA2200 powders. (a) Virgin powders; (b) the first recycled powders; (c) the eighth recycled powders; (d) adhered powders
Fig. 5. Impact fracture morphology of the formed samples. (a)(b) Formed sample with virgin powders; (c)(d) formed sample with the first recycled powders; (e)(f) formed sample with the fourth recycled powders; (g)(h) formed sample with the eighth recycled powders
Table 1. Experimental parameters
View tableTable 1. Experimental parameters
Laser power / W Scan spacing / mm Layer thickness / mm Preheating temperature / ℃ Scan speed / (mm·s-1) 30 0.15 0.1 168 1500
Table 2. Melting point and crystalline of different powders
View tableTable 2. Melting point and crystalline of different powders
Powders Melting point /℃ Crystallinity / % Virgin powders The first recycled powders The second recycled powders The third recycled powders The fourth recycled powders The fifth recycled powders The sixth recycled powders The seventh recycled powders The eighth recycled powders Adhered powders 188.1 191.0 190.6 191.6 191.3 191.0 191.1 191.0 191.3 192.6 52.0 53.0 53.0 51.6 51.7 51.4 51.5 51.3 51.5 42.7
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Li Zhenhua, Zhu Fei, Xu Huiyan, Li Ziliang, Teng Baoren, Zhang Xiaowei. Effect of Powder Recycling on Hardness and Impact Toughness of Polyamide Formed by Selective Laser Sintering[J]. Chinese Journal of Lasers, 2018, 45(5): 502010
Paper Information
Category: laser manufacturing
Received: Dec. 12, 2017
Accepted: --
Published Online: May. 2, 2018
The Author Email: Zhenhua Li (lzhkust@sina.com)
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