Laser Assisted Vacuum ESC Supersonic Deposition Spray Gun

Abstract

The invention discloses a laser-assisted vacuum electric sweep supersonic deposition spray gun, which includes a cold spray head, a laser generator and a laser beam control device, and the laser beam control device is installed at the exit of the laser generator to control the emission of the laser beam Direction, so that the laser beam and the spraying direction of the cold nozzle converge at one point. The invention can heat the powder particles in the powder beam through the laser generator, and the powder particles can be heated in a solid state through temperature control, so as to improve the plasticity of the solid particles, increase or even melt the surface temperature of the substrate, so as to reduce the need for solid particle deposition The critical speed, or the powder particles can be heated and deposited under phase change conditions to realize thermal spraying and improve the scope of application of the spray gun. At the same time, the powder particle deposition process forms a compacting and strengthening effect on the substrate, further improving the bonding strength of the deposited layer. In addition, it is beneficial to control the direction of the entire spray medium and prevent splashing and divergence caused by direct spraying.

Description

technical field [0001] The invention relates to the technical field of surface spraying, in particular to a laser-assisted vacuum electric sweep supersonic deposition spray gun. Background technique [0002] The existing supersonic cold spraying technology usually uses compressed gas to generate supersonic airflow through zoom-type Lava tubes, and sends powder into the supersonic airflow along the axial direction to form a gas-solid two-phase flow. When it hits the substrate, it undergoes large plastic deformation and deposits on the surface of the substrate to form a coating. In order to improve the deposition efficiency of the powder, the powder particles are usually heated by air heating. This heating method can only meet the heating of the powder particles in a solid state to achieve cold spraying, and cannot adapt to the spraying process required by different working conditions. [0003] Therefore, there is a need for a laser-assisted vacuum electric sweep supersonic d...

AI Technical Summary

Problems solved by technology

In order to improve the deposition efficiency of the powder, the powder particles are usually heated by air heating. This heating method can only meet the heating of the powder particles in a solid state to achieve cold spraying, and cannot adapt to the spraying process required by different working conditions.

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