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Welding technology has issues such as high heat input, high dilution rate, easy deformation of workpieces, low efficiency, high technical requirements for operators, and a limited range of workpieces that can be repaired, making it difficult to meet the demands for efficient and rapid repair； Brush plating technology is mainly used for repairs on small areas and at shallow depths ； Thermal spraying technology is suitable for the preparation of wear-resistant and corrosion-resistant coatings where high surface roughness is not required, but it has limitations such as lower adhesion strength and higher porosity. Laser cladding is a new technology that developed rapidly in the 1990s; it is one of the most advanced technologies among various surface treatment methods used today, both domestically and internationally ； Laser cladding is a rapidly solidifying, non-equilibrium preparation process, with local cooling rates that can exceed 103 K/s ； By adding a cladding material to the surface of the substrate and using a high-power-density laser beam to fuse it together with the substrate surface, a cladding layer that is metallurgically bonded to the substrate is formed on its surface, thereby significantly improving the wear resistance, corrosion resistance, heat resistance, oxidation resistance, and electrical properties of the substrate surface. Electroplating, brush plating, and supersonic spraying are physical bonding methods; the bond strength of these methods is less than 60–80 Mpm, and the porosity is greater than 5%. The spraying process involves a high oxygen content, while electroplating is not suitable for alloy materials or non-metallic materials such as tungsten carbide.