Optimization of Nd-YAG Laser Cutting Variables for EN AW-6061 T6 Aluminium Plate
Keywords:
Laser cutting, Aluminium alloys, Design of experiments, Automotive and aerospace partsAbstract
The objective of this research was to optimize Nd-YAG laser cutting condition for EN AW-6061 aluminum to minimize surface roughness. A 2k factorial design was employed to study on the effects of cutting variables, including laser power, cutting speed, frequency and nozzle distance. Results showed that all of these cutting variables significantly affect surface roughness of the specimen and the optimal cutting condition was laser power of 3000 W, cutting speed of 1.4 mm/min, frequency of 2000 Hz and nozzle distance of 0.5 mm. The confirmation test was conducted and provided the surface roughness of 1.86 m which passed the customer requirement.
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