(1) The cooling speed is fast, which belongs to a rapid solidification process, and it is easy to obtain fine crystal structure or produce new phases that cannot be obtained in equilibrium state, such as unstable phase, amorphous phase, etc;
(2) The dilution ratio of the coating is low, and the coating has a firm metallurgical bond or interface diffusion bond with the substrate;
(3) Small heat input and distortion, especially when high power density rapid cladding is adopted, the deformation can be reduced to the assembly tolerance of parts, which is suitable for strengthening or repairing some high-precision parts or parts with strict deformation requirements, such as the cam surface of camshaft;
(4) It can conduct selective cladding, with less material consumption and excellent cost performance;
(5) The choice of powder materials is almost unlimited, especially the cladding of high melting point alloy on the surface of low melting point metal;
(6) Laser cladding technology has good controllability and is easy to realize automatic control. The thickness of cladding layer can meet the predetermined geometric size requirements as required, and it can repair parts with complex geometric shapes, such as the gear profile of gears.
Source: Today's Headlines
