Laser cladding process of aluminum alloy surface

The present invention relates to a laser cladding process of the aluminum alloy surface. The process comprises the following steps: A, carrying out a pretreatment on the aluminum alloy surface, and carrying out metallurgical detection; B, uniformly spray-coating the mixed solution of preset alloy powder, a binder and acetone on the copper alloy surface, and then drying, wherein the coating thickness is 1-2 mm, the components of the alloy powder comprise 60-70% of Al, 15-25% of Ti, 6-8% of Fe and 6-12% of B, and the binder is the universal binder; C, adopting a carbon dioxide laser to carry out overlap scanning on the coating, wherein the scanning power is 1.8-2.2 kW, the light spot size is 10 mm*2 mm, the scanning speed is 150-250 mm/min, the overlap amount is 6.5 mm, and argon is adopted to protect the weld pool during the scanning process; and D, detecting the aluminum alloy. According to the present invention, the TiB ceramic particle reinforced wear-resistant coating is generated on the surface of the aluminum alloy, such that the hardness and the wear resistance of the aluminum alloy matrix can be effectively improved at the low load, wherein the hardness of the cladding layer can achieve 64-66 HRC.