Spray nozzle

摘要

A spray nozzle 10 for a laser deposition apparatus comprises an array of nozzle apertures 16 arranged side-by-side, and a powder supply chamber 18 in fluid communication with the nozzle apertures 16. In use the powder supply chamber 18 supplies powder to the nozzle apertures 16 under pressure so as to cause a wide powder stream to be discharged from the array of nozzle apertures 16. When used with a laser deposition apparatus 100, a relatively wide coating of a uniform thickness can be deposited.

主权项

1. A spray nozzle for a laser deposition apparatus, comprising:
an array of nozzle apertures arranged side-by-side; and a powder supply chamber in concurrent fluid communication with each of the array of nozzle apertures and arranged in use to supply powder to the array of nozzle apertures under pressure so as to cause a wide powder sheet to be ejected from the array of nozzle apertures, wherein at least one nozzle aperture of the array of nozzle apertures is provided with a controllable flow regulator configured to alter the flow rate of powder through the at least one nozzle aperture within the array of nozzle apertures, the controllable flow regulator being disposed within the at least one nozzle aperture.