At present, the key technical factors that limit wider application of the surface laser cladding layer technology is the cracking of laser cladding layer. CoNiCrWC composite coatings produced by 5 kW cross-flow CW CO2 laser was researched. The influence of both thickness of cladding layer and the preheat temperature of substrate on the cladding layer cracking behavior were considered. Using self-made micro-forging mechanism, high-frequency micro-forging was carried out on the laser cladding as laser cladding process went on simultaneously, which made plastic deformation emerge on the surface a...
