A method and device for preparing a coating by nanosecond pulse laser cladding
A nanosecond pulse laser and coating technology, which is applied in coating, metal material coating process, gaseous chemical plating, etc., can solve the problems affecting the surface quality of cladding layer, film shrinkage into molten droplets, discontinuous heat conduction, etc. , to achieve the effects of shortening the production cycle, good film quality and simplifying the processing process
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Embodiment 1
[0057] 1. Preparation before cladding. Open the vacuum chamber and place the aluminum workpiece on the sample stage, close the quartz vacuum chamber, and turn on the vacuum pump to evacuate the quartz vacuum chamber until the vacuum degree reaches the order of 1Pa.
[0058] 2. Heating the workpiece. Turn on the induction heating coil to heat the workpiece until the temperature displayed by the thermocouple reaches 165°C, and maintain a constant temperature.
[0059] 3. Laser cleaning the surface of the workpiece. Turn on the laser scanning system to clean the surface of the workpiece by nanosecond pulse laser sputtering, the energy density of the nanosecond pulse laser is 1000mJ / cm 2 , the overlap rate is 30%, and then turn off the laser scanning system.
[0060] 4. Laser cladding. Open the valve, let the argon enter the nickel carbonyl source tank through the mass flow meter, load the carbonyl nickel into the quartz vacuum chamber, adjust the flow rate of the argon, and m...
Embodiment 2
[0063] 1. Preparation before cladding. Open the vacuum chamber, place the uranium workpiece on the sample stage, close the vacuum chamber, turn on the vacuum pump, and evacuate the vacuum chamber until the vacuum degree reaches the order of 1Pa.
[0064] 2. Heating the workpiece. Turn on the induction heating coil to heat the workpiece until the temperature displayed by the thermocouple reaches 165°C, and maintain a constant temperature.
[0065] 3. Laser cleaning the surface of the workpiece. Turn on the laser scanning system to clean the surface of the workpiece by nanosecond pulse laser sputtering, the energy density of the nanosecond pulse laser is 1000mJ / cm 2 , the overlap rate is 30%, and then turn off the laser scanning system.
[0066] 4. Laser cladding. Open the valve, let the argon enter the nickel carbonyl source tank through the mass flow meter, load the carbonyl nickel into the vacuum chamber, adjust the flow rate of the argon, and make the partial pressure of...
Embodiment 3
[0070] 1. Preparation before cladding. Open the vacuum chamber, place the ceramic workpiece on the metal sample stage, close the vacuum chamber, turn on the vacuum pump, and evacuate the vacuum chamber until the vacuum degree reaches the order of 1Pa.
[0071] 2. Heating the workpiece. Turn on the induction heating coil to heat the metal sample stage and the workpiece until the temperature displayed by the thermocouple reaches 165°C and keep the temperature constant.
[0072] 3. Laser cleaning the surface of the workpiece. Turn on the laser scanning system to clean the surface of the workpiece by nanosecond pulse laser sputtering, the energy density of the nanosecond pulse laser is 1000mJ / cm 2 , the overlap rate is 30%, and then turn off the laser scanning system.
[0073] 4. Laser cladding. Open the valve, let the argon enter the nickel carbonyl source tank through the mass flow meter, load the carbonyl nickel into the vacuum chamber, adjust the flow rate of the argon, an...
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