Laser Additive Hardness Analysis of Surface Spot Area Controlled by Robot
In order to improve the quality of laser additive on a curved surface,the laser additive process was completed by using a robot to control the surface spot area.By adjusting the spot area,the surface can obtain the laser with specific energy,adjust the robot path and search for the optimal energy input position,and make reasonable planning for the laser path during the multi-scanning period.The results show that the smooth edge structure can be obtained at 5 mm defocus,and the non-inclusion cladding layer with excellent quality can be obtained.When the space angle is increased,the hardness curve value decreases,the plastic deformation forms greater grain boundary resistance,and the hardness is greater when the grain is refined.In this study,the interpolation points are obtained according to the spot area threshold,which has a good practical guiding significance for improving the surface laser additive quality.
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