Heat Transfer in Additive Manufacturing of Glass
The temperature in the molten region is a critical parameter for Additive Manufacturing (AM) of transparent glass using a laser heated filament-fed processing. This paper presents a study of the heat transfer in single track printing of borosilicate glass using the filament-fed process. The incandescent radiation emitted from the melt pool is monitored using a spectrometer. The spectral data indicates the breakdown of materials occurring inside of the glass, and reflects the occurrence of bubble formation due to reboil at high temperatures. A simple numerical model of the filament-fed process based on an energy balance within the melt pool is used to estimate the temperature. By combining the numerical and experimental results, the estimated temperature calculated from this model is suitable for control feedback.
J. Luo et al., "Heat Transfer in Additive Manufacturing of Glass," Proceedings of the ASME 2017 Heat Transfer Summer Conference (2017, Bellevue, WA), vol. 2, American Society of Mechanical Engineers (ASME), Jul 2017.
The definitive version is available at https://doi.org/10.1115/HT2017-5100
ASME 2017 Heat Transfer Summer Conference, HT2017 (2017: Jul. 9-12, Bellevue, WA)
Mechanical and Aerospace Engineering
Intelligent Systems Center
Keywords and Phrases
3D printers; Borosilicate glass; Industrial research; Manufacture; Thermodynamic properties; Transport properties; Control feedback; High temperature; Melt pool; Molten region; Process-based; Single-tracks; Spectral data; Transparent glass; Heat transfer
International Standard Book Number (ISBN)
Article - Conference proceedings
© 2017 American Society of Mechanical Engineers (ASME), All rights reserved.