Digital forming of glass by controlling loading and laser heating

Nicholas Capps; Jonathan T. Goldstein; Arndt Hohnholz; Katharina Rettschlag; Khodor Sleiman; Stefan Kaierle; Edward C. Kinzel

doi:10.1117/12.2579212

5 March 2021 Digital forming of glass by controlling loading and laser heating

Nicholas Capps, Jonathan T. Goldstein, Arndt Hohnholz, Katharina Rettschlag, Khodor Sleiman, Stefan Kaierle, Edward C. Kinzel

Author Affiliations +

Proceedings Volume 11677, Laser 3D Manufacturing VIII; 1167712 (2021) https://doi.org/10.1117/12.2579212
Event: SPIE LASE, 2021, Online Only

Abstract

There are several techniques for 3D printing glass by sequentially fusing molten tracks. We investigate a process feeding cool glass filament into a CO2 laser to provide local heating. Unlike most crystalline materials, glasses retain significant viscosity when molten. In filament-fed laser heated processing the feed exerts a significant stress on the laser heated region which strongly influences on final track geometry. This introduces challenges but also allows the creation of fully dense glass volumes and free-standing structures. The stress field on the molten region is controlled by using pneumatics and orienting the feed in the moving deposition coordinate system.

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Nicholas Capps, Jonathan T. Goldstein, Arndt Hohnholz, Katharina Rettschlag, Khodor Sleiman, Stefan Kaierle, and Edward C. Kinzel "Digital forming of glass by controlling loading and laser heating", Proc. SPIE 11677, Laser 3D Manufacturing VIII, 1167712 (5 March 2021); https://doi.org/10.1117/12.2579212

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