During laser welding, the formation of spatter results from instabilities of the capillary, which are associated with adverse conditions in the melt flow surrounding the capillary and in the vapor flow at the capillary opening.
A change of the characteristics of these flows in the melt pool and in the capillary requires a change of the shape of the capillary and/or the surrounding melt pool. In order to influence the stabilize the capillary the intensity distribution was varied by means of a ring-core fiber system. Analysis of the resulting welds shows a significant effect of the intensity distribution on the stability of the capillary shape and considerable changes in the melt flow direction and velocity. These findings identified an optimum capillary shape, which results from a specific power share in the ring-core fiber combination.
%0 Generic
%1 zaissLIM23influence
%A Zaiß, Felix
%A Haas, Michael
%A Wagner, Jonas
%A Diegel, Christian
%A Schricker, Klaus
%A Bergmann, Jean Pierre
%A Hummel, Marc
%A Olowinsky, Alexander
%A Beckmann, Felix
%A Moosmann, Julian
%A Hagenlocher, Christian
%A Graf, Thomas
%D 2023
%K myown imaging core-ring beam-shaping spatter formation
%T Influence of capillary shape on spatter formation during welding with ring-core fiber systems
%X During laser welding, the formation of spatter results from instabilities of the capillary, which are associated with adverse conditions in the melt flow surrounding the capillary and in the vapor flow at the capillary opening.
A change of the characteristics of these flows in the melt pool and in the capillary requires a change of the shape of the capillary and/or the surrounding melt pool. In order to influence the stabilize the capillary the intensity distribution was varied by means of a ring-core fiber system. Analysis of the resulting welds shows a significant effect of the intensity distribution on the stability of the capillary shape and considerable changes in the melt flow direction and velocity. These findings identified an optimum capillary shape, which results from a specific power share in the ring-core fiber combination.
@presentation{zaissLIM23influence,
abstract = {During laser welding, the formation of spatter results from instabilities of the capillary, which are associated with adverse conditions in the melt flow surrounding the capillary and in the vapor flow at the capillary opening.
A change of the characteristics of these flows in the melt pool and in the capillary requires a change of the shape of the capillary and/or the surrounding melt pool. In order to influence the stabilize the capillary the intensity distribution was varied by means of a ring-core fiber system. Analysis of the resulting welds shows a significant effect of the intensity distribution on the stability of the capillary shape and considerable changes in the melt flow direction and velocity. These findings identified an optimum capillary shape, which results from a specific power share in the ring-core fiber combination.},
added-at = {2024-05-08T12:13:57.000+0200},
author = {Zaiß, Felix and Haas, Michael and Wagner, Jonas and Diegel, Christian and Schricker, Klaus and Bergmann, Jean Pierre and Hummel, Marc and Olowinsky, Alexander and Beckmann, Felix and Moosmann, Julian and Hagenlocher, Christian and Graf, Thomas},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/25314ae493a5c35cfed038b0622b4bcfe/ifsw},
eventdate = {30.06.2023},
eventtitle = {Lasers in Manufacturing Conference 2023},
interhash = {5822bf7bf5504ecd137815fbeed61b5d},
intrahash = {5314ae493a5c35cfed038b0622b4bcfe},
keywords = {myown imaging core-ring beam-shaping spatter formation},
language = {english},
timestamp = {2024-05-08T12:14:33.000+0200},
title = {Influence of capillary shape on spatter formation during welding with ring-core fiber systems},
venue = {Munich},
year = 2023
}
