Analysis of Autogenous Laser Welding in Low Carbon and Large Thickness Steel

Updata:01-01-1970

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By:Daniel Kohls, Carlos Enrique Ninõ Bohorquez, Enori Gemilli, Majorie Anacleto Bernardo

DOI:

Abstract:
With the use of laser welding, it is possible to join different steel, with
different thicknesses, with or without the action of protective layers. The
quality of laser radiation makes it possible to get certain characteristics that
are impossible to get by other processes, such as high welding speeds, less
metallurgical effects suffered by the heat-affected zone (ZAC), and this
process also does not require filler metal, therefore it is free from possible
contamination.
Combined with traditional welding methods, laser welding produces
narrower weld beads, allowing for better prevention of corrosion and
thermal distortions.
Although the process already has high industrial knowledge, some random
defects, such as porosities and inconsistencies, are still found. This work
presents a systematic study to determine the influence of laser welding
parameters and how these parameters influence welding defects. For
this, the experimental part was carried out in the welding laboratory -
LABSOLDA, of the Federal University of Santa Catarina - UFSC, during
the laser welding processes, a welding speed of 2.4 m/min was reached. For
this experiment, argon was used as a shielding gas and 1020 steel was used
as the base material.
References:

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