Laser surface texturing of metals using dynamic melt expulsion by application of fast modulated cw-laser radiation

  • Laser surface texturing of metals is usually performed using pulsed laser sources. Short and ultrashort pulsed laser systems offer the highest machining quality and processing flexibility. Most of these beam sources however feature relatively low average powers or high system prices. Continuous wave fiber lasers in comparison feature high average powers at moderate costs. In this work the laser power of a continuous-wave fiber laser is rapidly modulated to investigate the possibilities to improve laser surface texturing processes by periodically changing the interaction between the sur-face tension in the melt pool and the vapor pressure created during high power laser processing. It was found that the intermittent nature of modulated continuous wave laser radiation can improve the melt expulsion from the processing area, leading to high material removal rates and ablation ef-ficiencies while also limiting the heat input into the substrate material.

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Metadaten
Author:Andreas Schkutow, Thomas Frick
URL / DOI:http://www.jlps.gr.jp/en/proc/lpm/23/
Parent Title (English):Proceedings of LPM2023
Publisher:Japan Laser Processing Society (JLPS)
Document Type:conference proceeding (article)
Language:English
Date of first Publication:2023/08/10
Release Date:2025/03/28
Volume:2023
Konferenzangabe:The 24th International Symposium on Laser Precision Microfabrication
institutes:Fakultät Maschinenbau und Versorgungstechnik
Institut für Chemie, Material- und Produktentwicklung
Research Themes:Materialien & Produktionstechnik
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