Metal cladding repairing method for metal part

The invention relates to the technical field of metal material processing, and discloses a metal part laser cladding repairing method, and the specific preparation process comprises seven basic steps of powder selection, powder screening, powder design, powder preparation, part surface preparation, laser cladding process and post-treatment. The cladding main powder is selected according to the material of the to-be-repaired part, the relation between the solidification temperature interval and the melting point of the main powder is calculated through thermodynamic software, whether the adding powder needs to be added to reduce the solidification temperature interval of the mixed powder or not is judged, and the performance of the mixed powder is improved by adding the adding powder; therefore, the performance of the part repaired by using the mixed powder is excellent, the purpose of prolonging the service life of the part is achieved, and the method is simple, convenient and feasible in process, high in eff