During laser micro polishing of the metallic surface, it is very important to choose the optimal laser energy density and laser spot scanning speed. In this paper, during micro-polishing on the metallic surface by using UV nanosecond pulse laser, the influence of laser spot scanning speed on the polishing effect was investigated in terms of the relationship with the laser energy density. The experimental and analytical considerations were shown that there is the optimal scanning speed of laser spot for the best laser polishing effect when the laser energy density on the workpiece surface was rated, and the influence of the overlap ratio of the scanning lines was also considered. In addition, the optimal process parameters for the laser micro polishing of Ti and Ni metallic surfaces were obtained and the laser micro polishing experiments on theose metallic surfaces were conducted. For Ti and Ni metallic surfaces, the surface roughness improvements of up to 51.6% and 52 % were respectively obtained.
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[v1] 2018-03-11 20:29:57
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