%0 Conference Paper
%A Zaiss, Felix
%A Haas, Michael
%A Powell, John
%A Wahl, Johannes
%A Diegel, Christian
%A Schricker, Klaus
%A Bergmann, Jean Pierre
%A Hummel, Marc
%A Spurk, Christoph
%A Olowinsky, Alexander
%A Beckmann, Felix
%A Moosmann, Julian
%A Hagenlocher, Christian
%A Graf, Thomas
%T Reducing capillary depth fluctuations in high-speed laser welding of stainless steel using multi-core laser technology
%J Procedia CIRP
%V 124
%@ 2212-8271
%C Amsterdam [u.a.]
%I Elsevier
%M PUBDB-2024-06124
%P 413-417
%D 2024
%X Laser welding was carried out in AISI304 (X5CrNi18-10) stainless steel using a multi-core fiber laser. High-speed X-ray imaging was used to monitor the process. When employing core-power only (400W) at high welding speeds (12m/min), the capillary depth was found to be inconsistent. The capillary penetration into the material varied from approximately 0.8 mm to approximately 0.2 mm, with fluctuation periods of between single milliseconds and tens of milliseconds. Employing a 0.5:0.5 ring-core power distribution (390W:390W) to achieve the same penetration (0.8mm) was found to reduce fluctuations in the depth of the welding process and the capillary penetration. Possible reasons for this reduction in depth fluctuations are discussed together with a detailed description of the resulting changes in weld cross-section. 
%B 13th CIRP Conference on Photonic Technologies 
%C 15 Sep 2024 - 19 Sep 2024, Fürth (Germany)
Y2 15 Sep 2024 - 19 Sep 2024
M2 Fürth, Germany
%F PUB:(DE-HGF)16 ; PUB:(DE-HGF)8
%9 Journal ArticleContribution to a conference proceedings
%R 10.1016/j.procir.2024.08.144
%U https://bib-pubdb1.desy.de/record/615369