Prof. Du Wang Profile

Prof. Du Wang

at Wuhan Univ

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Proceedings Article | 21 December 2022 Presentation

Processing window of laser polishing based on molten pool dynamics

Du Wang

Proceedings Volume 12312, 123120E (2022) https://doi.org/10.1117/12.2642038

KEYWORDS: Polishing, Laser processing, Surface finishing, Silica, Liquids, Laser applications, Laser ablation, Glasses, Absorption

Read Abstract +

Laser polishing (LP) is a promising technology for improving surface quality. An important obstacle to the practical application of LP technology is the relatively narrow process window. Lots of previous studies have demonstrated that LP is often applied below the ablation threshold, causing a large gap in the process window for different materials, which depends on many parameters such as material absorption, phase transition temperature, dynamic viscosity and so on. Through comparative studies of several materials with different properties, including glass and alloy materials, we believe that the process window of LP can be appropriately sought from the perspective of molten pool dynamics. This investigation focuses on the evolution of molten pool flowing over time during the laser polishing process based on well-designed multi-physics numerical models and experiments.

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