Research on the Design of the Laser Beam in SLS Rapid Prototyping Machine

Abstract:

Selective Laser Sintering (SLS) is an HYPERLINK "https://en.wikipedia.org/wiki/Additive_manufacturing" \o "Additive manufacturing" additive manufacturing (AM) technique that uses a HYPERLINK "https://en.wikipedia.org/wiki/Laser" \o "Laser" Laser as the power source to HYPERLINK "https://en.wikipedia.org/wiki/Sintering" \o "Sintering" sinter powdered material, typically HYPERLINK "https://en.wikipedia.org/wiki/Nylon" \o "Nylon" nylon/ HYPERLINK "https://en.wikipedia.org/wiki/Polyamide" \o "Polyamide" polyamide HYPERLINK "https://en.wikipedia.org/wiki/Selective_laser_sintering" \l "cite_note-1" [7], HYPERLINK "https://en.wikipedia.org/wiki/Selective_laser_sintering" \l "cite_note-2" [8]. A Laser beam HYPERLINK "https://en.wikipedia.org/wiki/Automation" \o "Automation" automatically aims at points in space defined by a HYPERLINK "https://en.wikipedia.org/wiki/3D_modeling" \o "3D modeling" 3D model, binding the material together to create a solid structure. In the SLS rapid prototype machine, a high power CO₂ Laser sources is applied for sintering the powder material to its melting point temperature. The ability of application of a Laser radiation for sintering the material depends on the power of energy source and the time of interaction of radiation with the material of the product. Otherwise, the design of Laser beam for sintering powder material depends on the technical parameters such as power Laser source, Laser point size, type and focus of lenses.... This article presents a study on the design of our own Laser beam sintering in the SLS rapid prototype that satisfies the technical requirements. The results of testing show that the designed and manufactured Laser beam instrument in SLS rapid prototype machine in our laboratory can be approved because it satisfies all the technological requirements of the medium range of SLS rapid prototyping machine.

• Periodical: Applied Mechanics and Materials (Volume 894)
• Pages: 140-148
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.894.140
• Online since: September 2019
• Authors: Vo Tuyen, Thanh Nam Nguyen, Khanh Dien Le*
• Keywords: Laser Beam, Lenses, Rapid Prototyping Machine, Sintering, SLS

References

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[8] Vo Tuyen, Le Khanh Dien, Nguyen Thanh Nam, Svetlin Antonov, Rosica Velichkova, Ivan Antonov, Structure design of the SLS rapid prototyping machine by modularity, XXI National scientific conference with international participation. FPEPM'(2018).