Frontal pyrometric snapshot measurements of the keyhole wall temperature in laser welding of pure aluminium
R. Pordzik,
T. Mattulat,
P. Woizeschke
Abstract:In deep penetration laser welding, the quality of the weld seam is strongly correlated with the process dynamics. Pronounced dynamics of the melt pool and the keyhole cause defects like pores and blow-outs which negatively affect the mechanical properties of the seam. The process dynamics are primarily governed by the fluctuations of the keyhole shape. Therefore, in order to avoid the occurrence of defects in the weld seam, it is necessary to gain control over the keyhole stability by understanding the underly… Show more
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