Proceedings of the
9th International Conference of Asian Society for Precision Engineering and Nanotechnology (ASPEN2022)
15 – 18 November 2022, Singapore
doi:10.3850/978-981-18-6021-8_OR-01-0315
A Novel 2µm Fiber Laser Setup for Evaluating the Sintering Ability of Polymeric Powder for Selective Laser Sintering
1Singapore Institute of Manufacturing Technology (SIMTech), 2 Fusionopolis Way, Singapore 138634, Singapore
2Department of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
ABSTRACT
Selective Laser Sintering (SLS) is a powder bed fusion additive manufacturing process involving the use of polymeric powders. Typical SLS systems utilizes either CO2 laser, at 10.6µm or traditional diode fiber lasers (Nd-YAG, Yb), at 0.8-1.07 µm. In this work, a 2µm Tm fiber laser was setup to evaluate the sintering ability of polyamide-12 (PA2200) powder and compared with commercial SLS system in terms of mechanical performance, thickness of sintered layer and surface roughness. In-house lasered samples using 2µm laser showed higher strength (+37%) and larger thickness (+210%) as compared to EOS P395 printed sample with similar print properties. The higher thickness layer set the basis for a possible high speed SLS printing process.
Keywords: Selective Laser Sintering, SLS, Polymer Powder.
1Singapore Institute of Manufacturing Technology (SIMTech), 2 Fusionopolis Way, Singapore 138634, Singapore
2Department of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
ABSTRACT
Selective Laser Sintering (SLS) is a powder bed fusion additive manufacturing process involving the use of polymeric powders. Typical SLS systems utilizes either CO2 laser, at 10.6µm or traditional diode fiber lasers (Nd-YAG, Yb), at 0.8-1.07 µm. In this work, a 2µm Tm fiber laser was setup to evaluate the sintering ability of polyamide-12 (PA2200) powder and compared with commercial SLS system in terms of mechanical performance, thickness of sintered layer and surface roughness. In-house lasered samples using 2µm laser showed higher strength (+37%) and larger thickness (+210%) as compared to EOS P395 printed sample with similar print properties. The higher thickness layer set the basis for a possible high speed SLS printing process.
Keywords: Selective Laser Sintering, SLS, Polymer Powder.
