Design and experimental validation of a small-scale prototype selective laser sintering system

Enzi, Abass; Mynderse, James A.

doi:10.1007/s42452-019-1600-3

Cited by 2 publications

(1 citation statement)

References 18 publications

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“…As the technology continues to evolve, we can expect to see more breakthroughs in the creation of complex ceramic structures, leading to new possibilities for artistic expression and innovative applications in various fields. Additive manufacturing technologies for producing three-dimensional ceramic parts include inkjet printing [ 3 , 4 , 5 ], selective laser sintering (SLS) [ 6 , 7 ], stereolithography (SLA) [ 8 , 9 ], laminated object manufacturing (LOM) [ 10 , 11 ], and direct writing extrusion-based technologies [ 4 , 12 , 13 ]. In the 3D printing process, the 3D ceramic molding process is transformed into a discrete accumulation process from point to line, and from line to surface [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Printing of Large Ceramic Products and Process Simulation

et al. 2023

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Ceramic 3D printing is a promising technology that overcomes the limitations of traditional ceramic molding. It offers advantages such as refined models, reduced mold manufacturing costs, simplified processes, and automatic operation, which have attracted a growing number of researchers. However, current research tends to focus more on the molding process and print molding quality rather than exploring printing parameters in detail. In this study, we successfully prepared a large-size ceramic blank using screw extrusion stacking printing technology. Subsequent glazing and sintering processes were used to create complex ceramic handicrafts. Additionally, we used modeling and simulation technology to explore the fluid model printed by the printing nozzle at different flow rates. We adjusted two core parameters that affect the printing speed separately: three feed rates were set to be 0.001 m/s, 0.005 m/s, and 0.010 m/s, and three screw speeds were set to be 0.5 r/s, 1.5 r/s, and 2.5 r/s. Through a comparative analysis, we were able to simulate the printing exit speed, which ranged from 0.0751 m/s to 0.6828 m/s. It is evident that these two parameters have a significant impact on the printing exit speed. Our findings show that the extrusion velocity of clay is approximately 700 times faster than the inlet velocity at an inlet velocity of 0.001–0.010 m/s. Furthermore, the screw speed is influenced by the inlet velocity. Overall, our study sheds light on the importance of exploring printing parameters in ceramic 3D printing. By gaining a deeper understanding of the printing process, we can optimize printing parameters and further improve the quality of ceramic 3D printing.

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Section: Introductionmentioning

confidence: 99%

Three-Dimensional Printing of Large Ceramic Products and Process Simulation

et al. 2023

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High-Efficiency Dynamic Scanning Strategy for Powder Bed Fusion by Controlling Temperature Field of the Heat-Affected Zone

Huang,

Tian,

Zhong

et al. 2024

Chin. J. Mech. Eng.

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Improvement of fabrication efficiency and part performance was the main challenge for the large-scale powder bed fusion (PBF) process. In this study, a dynamic monitoring and feedback system of powder bed temperature field using an infrared thermal imager has been established and integrated into a four-laser PBF equipment with a working area of 2000 mm × 2000 mm. The heat-affected zone (HAZ) temperature field has been controlled by adjusting the scanning speed dynamically. Simultaneously, the relationship among spot size, HAZ temperature, and part performance has been established. The fluctuation of the HAZ temperature in four-laser scanning areas was decreased from 30.85 ℃ to 17.41 ℃. Thus, the consistency of the sintering performance of the produced large component has been improved. Based on the controllable temperature field, a dynamically adjusting strategy for laser spot size was proposed, by which the fabrication efficiency was improved up to 65.38%. The current research results were of great significance to the further industrial applications of large-scale PBF equipment.

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Design and experimental validation of a small-scale prototype selective laser sintering system

Cited by 2 publications

References 18 publications

Three-Dimensional Printing of Large Ceramic Products and Process Simulation

Three-Dimensional Printing of Large Ceramic Products and Process Simulation

High-Efficiency Dynamic Scanning Strategy for Powder Bed Fusion by Controlling Temperature Field of the Heat-Affected Zone

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