Abstract
The welding performance of adjustable ring mode (ARM) and standard single beam fiber lasers was analyzed from a steel welding perspective. The ARM laser has the capability of adjusting the distribution of laser power across beams. Thus, the ARM laser enabled an increase of penetration depth and minimized spatter formation. Furthermore, at the same total power, the ARM laser with higher power in the center than in the ring beam increased the depth of penetration in comparison with a standard fiber laser. However, applying more power in the ring beam than in the center beam noticeably reduced the accumulated spatter on the weld bead and surrounding area.
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