A preparation method of a
cobalt-based anti-
cavitation coating of plastic deposition based on
work hardening comprises the steps that an oxidization film on the surface of a
metal matrix is removed, oil
dirt and residual impurities on the surface are removed through cleaning, and after the
metal matrix is dried in air, the matrix is fixed to a
workbench; (2)
powder is placed in a
vacuum drying boxto be dried, and after being dried, the
powder is cooled to
room temperature to be placed in a
powder feeder; (3) the carrier gas kind, the carrier
gas pressure, the preheating temperature and the powder feeding rotating speed are set in a cold spraying panel; (4)
laser power is set in a
laser control panel; (5) a mechanical arm is started, the spraying
coating lap-joint rate and the scanning speed are input, the mechanical arm is adjusted, so that a cold spraying
nozzle is perpendicular to the surface of the matrix, and the angle of a
laser head is adjusted, so that laser spots coincide withspraying powder spots; (6) equipment is started, and supersonic-speed laser deposition experimenting is carried out in the matrix; and (7) after
processing is completed, the
coating on the surface ofthe
metal matrix is subjected to aftertreatment, and the surface of the coating is leveled.