Method for cleaning metal surface carbon deposits through pulse lasers

The invention relates to a method for cleaning metal surface carbon deposits through pulse lasers. According to the method, a water and alcohol mixed liquid film with the thickness ranging from 10 microns to 20 microns is sprayed to the surfaces of the carbon deposits, then the pulse lasers generated through a laser device are gathered to the metal surfaces with the carbon deposits, pulse laser parameters are selected, the pulse laser cleaning threshold value range is 6.0*10 -8.1*10 W/cm , the scanning path is in an S shape, the scanning speed ranges from 5.0 cm/s to 30 cm/s, the face scanning width ranges from 5 cm to 15 cm, the scanning overlap rate ranges from 1% to 5%, and cleaning of the metal material surface carbon deposits is achieved. According to the method, the cleaning rate reaches 40 cm /s-120 cm /s, the cleaning degree reaches 95% or above, the surface quality reaches the Sa3 level, the laser cleaned surface is not damaged, and no influences are caused to the mechanical performance of cleaned ma