Laser nozzle device and method for uniformly distributing powder

Abstract

The invention discloses a laser nozzle device. The device comprises an outer sleeve and a nozzle core arranged in the outer sleeve, wherein the side wall at the upper end of the outer sleeve is provided with a powder inlet externally connected with a powder inlet pipe; a powder outlet is arranged between the lower end of the outer sleeve and the lower end of the nozzle core; a powder channel is arranged between the inner side of the outer sleeve and the outer side of the nozzle core and extended to the powder outlet, and the powder inlet, powder channel and powder outlet are intercommunicated; the outer side wall of the nozzle core is embedded with a plurality of steel balls, and a laser channel is arranged in the nozzle core; and the upper of the outer sleeve is muff-coupled with the upper end of the nozzle core. The invention also provides a method for uniformly distributing powder by the device. Because the device uses the steel balls, the uniform conveying of powder is realized without needing a longer power-conveying channel, so that the overall size of the nozzle is reduced, the complexity of a powder-conveying system matched with the device is greatly lowered, and the operability of the nozzle device is improved.

Description

technical field [0001] The invention belongs to the field of laser processing, in particular to a laser nozzle device and a method for evenly distributing powder thereof. Background technique [0002] Laser processing technologies such as laser cladding, laser remanufacturing, laser spraying, and laser lamination manufacturing have received more and more attention since they came out. They have the advantages of protecting the environment, reducing energy consumption, saving strategic metals, and improving the surface properties of materials. The advantages make it of great significance to study and improve it. Among them, laser cladding is one of the widely used technologies. Laser cladding is also called laser cladding or laser cladding. The method of melting the thin layers on the surface of the material together forms a metallurgically-bonded cladding layer on the surface of the base. [0003] In the application of laser processing technology, the laser nozzle is one o...

AI Technical Summary

Problems solved by technology

Although this structure has the advantages of realizing the coaxiality of the powder convergence point and the laser focus point, and convenient operation, it cannot fundamentally achieve uniform powder feeding, and multiple powder feeding ports need to be set (by injecting multiple powder streams) Evenly distribute the powder), which not only complicates the powder feeding system and lowers the operability of the nozzle device, but also lengthens the powder feeding channel of the nozzle device and prolongs its powder feeding time, which makes the processed powder uniformity insufficient and affects the processing product quality

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