VARIABLE-LIGHT-SPOT MULTILAYER STAGGERED LASER SHOCK HOMOGENEOUS ENHANCEMENT METHOD FOR BLADES

摘要

A method for performing multilayer staggered shock enhancement on blades by means of laser with different light spot sizes. The method is characterized by comprising: performing three-layer shock in a mode that adjacent light spots are adjacent but not lapped; shocking the first layer by means of laser with large light spots, so as to generate a deeper residual stress layer; and performing staggered shock on the second layer and the third layer by means of laser with small light spots, so as to eliminate a light spot boundary effect and reduce the roughness of a machined surface.