This bachelor's thesis deals with laser welding of copper and the influence of process parameters on weld quality and geometry. A continuous-wave fiber laser with a wavelength of 1070 nm and a maximum output power of 3000 W was used. An experimental analysis was conducted on the influence of laser power, welding speed, and laser beam diameter on weld width and the stability of the keyhole welding. Based on the obtained results, suitable parameter ranges for high quality welding were determined. It was also found that laser power modulation in the initial phase of welding is required for faster establishment of the keyhole.
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