Integrated type laser-cladding coaxial powder feeding spray nozzle

Abstract

The invention relates to the technical field of laser cladding, in particular to an integrated type laser-cladding coaxial powder feeding spray nozzle. The integrated type laser-cladding coaxial powder feeding spray nozzle comprises an integrally formed main body which is provided with a top wall, an outer wall and a bottom wall, wherein a through hole is formed in the center of the bottom wall; the center position of the top wall is provided with an opening; the edge of the opening downwards extends to connect with the side wall of the through hole, so that a laser beam channel is formed; thetop wall, the outer wall, the bottom wall and the side walls of the laser beam channel are enclosed to form a cavity; a powder channel is arranged in the cavity in a penetrating mode; the portion, exposed to the outer part of the main body, of the powder channel is equipped with an inlet; a powder outlet which communicates with the powder channel is formed in the bottom wall; a gas channel for filling inert gas is further arranged in the cavity; a gas inlet is formed in a position, which is on the outer part of the main body, of the gas channel; a gas outlet which communicates with the gas channel is formed in the bottom wall; and a cooling water channel is further arranged on the main body. A spray nozzle main body adopts design and processing of an integrated type structure, and can ensure that failure phenomena such as loosening and dropping, caused by inconsistent deformation, are avoided in a case that the spray nozzle is in alternate cooling and heating.

Description

technical field [0001] The invention relates to the technical field of laser cladding, in particular to an integrated laser cladding coaxial powder feeding nozzle. Background technique [0002] Laser cladding (Laser Cladding) refers to the placement of selected coating materials on the surface of the coated substrate with different filler methods, which are melted simultaneously with a thin layer of the substrate surface by laser irradiation, and rapidly solidified to form a dilution A surface coating that is extremely low and metallurgically bonded to the base material, thereby significantly improving the wear resistance, corrosion resistance, heat resistance, oxidation resistance, and electrical properties of the base material surface. Its coating material forms usually include silk or powder. In order to pursue higher cladding accuracy and quality, powder is generally used as the material at present. The methods of adding powder materials mainly include preset, side-axi...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the defect of inconsistent thermal deformation of split nozzles in the prior art, the present invention provides an integrated laser cladding coaxial powder feeding nozzle with consistent deformation and no looseness or falling off.

Images