Abstract
Mechanism and processing technology of ultraviolet (UV) nanosecond laser precision cutting of epoxy resin board (ERB) were investigated based on by-products analysis and orthogonal experiment. Interactions between UV nanosecond laser and ERB was studied, and by-products generated during laser cutting process were analyzed. Among them, gaseous by-products such as CO and benzene were potentially toxic. Under premise of cutting off ERB (0.5 mm thick), minimum seam width (75 ± 3 µm) was obtained at laser cutting parameters combination of 4.04 W - 1000 mm/s – 8 (cutting times). Meanwhile, there was no obvious burr and thermal deformation of the seam. Overall, UV nanosecond laser is a viable process for precision cutting of ERB, but protective measures must be taken during the process.
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