Method and device for light, powder and gas coaxial transmission laser cladding forming manufacturing
A laser cladding, coaxial technology, used in manufacturing tools, laser welding equipment, coatings, etc., can solve the problems of powder beam collimation and rigidity need to be improved, the powder drop area is large, and the powder utilization rate is low. , to reduce the formation of unmelted particles, easy to adjust and control, and improve the utilization rate
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[0024] Example 1: see Figure 2 to 4 As shown, a method of coaxial transmission of light, powder, and gas to laser cladding forming manufactures. Through optical path conversion, the circular cross-section solid laser beam emitted by the laser is transformed and expanded to become a circular laser beam. The circular laser beam is focused to become a hollow circular cone-shaped focused laser beam. A powder nozzle is arranged in the hollow part of the circular cone-shaped laser beam, and the powder nozzle is coaxial with the circular cone-shaped laser beam. Line; A circle of collimating protective air curtain is arranged on the periphery of the single powder beam sprayed by the powder nozzle, the collimating protective air curtain and the circular cone-shaped focusing laser beam and the single powder beam sprayed by the powder nozzle three The air pressure of the collimated protective air curtain is 0.1-0.5Mpa.
[0025] A device for laser cladding and forming by coaxial transmissi...
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[0027] Example 2: see Figure 5 As shown, a device for coaxial transmission of light, powder, and gas by laser cladding and forming includes a powder-feeding nozzle cylinder. The cylinder is provided with a light inlet on the top and a light outlet on the bottom. A conical reflector is provided in the body facing the light entrance, and a circular ring-shaped reflective focusing mirror is arranged coaxially with the conical reflector. A powder feeding tube is fixed under the conical reflector, and the lower end of the powder feeding tube A powder spray nozzle 20 is provided. The powder spray nozzle is coaxial with the laser beam. A collimation protective gas sleeve 21 is provided on the periphery of the powder spray nozzle 20 between the conical reflector and the outlet of the powder nozzle 20. The collimating protective air sleeve 21 is provided with three arc-shaped air outlets 22 along the circumferential direction. The arc-shaped air outlet 22 has a width of 0.4 to 1.5 mm. T...
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