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Christian Diegel, Thorsten Mattulat, Klaus Schricker, Leander Schmidt, Thomas Seefeld, Jean Pierre Bergmann and Peer Woizeschke
Background. Spatter formation at melt pool swellings at the keyhole rear wall is a major issue for laser deep penetration welding at speeds beyond 8 m/min. A gas nozzle directed towards the keyhole, that supplies shielding gas locally, is advantageous in...
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Jin Peng, Jigao Liu, Xiaohong Yang, Jianya Ge, Peng Han, Xingxing Wang, Shuai Li and Yongbiao Wang
In this paper, a heat-flow coupling model of laser welding at preheating temperature was established by the FLUENT 19.0 software. The fluctuation of the keyhole wall and melt flow behavior in the molten pool under different preheating temperatures were a...
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Brian T. Gibson, Bradley S. Richardson, Tayler W. Sundermann and Lonnie J. Love
This work applies to the production of large, complex, metallic preform structures in the aerospace and tool and die industries. In the aerospace industry, this technology has a potential role in the rapid production of custom, near-net shape preforms fo...
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