Coaxial nozzle for surface treatment under laser irradiation, with addition of materials in powder form

摘要

Nozzle for surface treatment by laser beam, with supply of materials in powder form. Nozzle characterized in that it essentially consists of a nozzle body (1) provided with a frustroconical passage (2) tapered towards the nozzle outlet (3) according to the axis of propagation (6') of the laser beam (6), and a device (4) for coaxially injecting and guiding materials (5) in powder form conveyed by a transport fluid in the nozzle body (1) in order to improve interaction between the incident laser beam (6) and the materials (5) in powder form.