Powder nozzle used for surface treating using a laser beam comprises an inner part, an outer part, and an expansion chamber for distributing a powder gas mixture flowing into an annular gap

Powder nozzle comprises an inner part (1); an outer part (2); and an expansion chamber (4) for distributing a powder gas mixture flowing into an annular gap (8). A diffuser (5) is arranged on the inner part in the expansion chamber. The annular gap is arranged coaxially to the spreading axis of the...

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Bibliographische Detailangaben
Hauptverfasser:	BACKES, GERHARD, KEUTGEN, STEFANIE, KREUTZ, ERNST WOLFGANG
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ATOMISING APPARATUS CHEMICAL SURFACE TREATMENT CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY NOZZLES PERFORMING OPERATIONS SOLDERING OR UNSOLDERING SPRAYING APPARATUS SPRAYING OR ATOMISING IN GENERAL SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	Powder nozzle comprises an inner part (1); an outer part (2); and an expansion chamber (4) for distributing a powder gas mixture flowing into an annular gap (8). A diffuser (5) is arranged on the inner part in the expansion chamber. The annular gap is arranged coaxially to the spreading axis of the laser beam (10). Preferred Features: The diffuser is a rod or ball diffuser. An adjusting unit (3) is provided opposite the inner part for finely adjusting the outer part. Die Erfindung betrifft eine Pulverdüse zur Oberflächenbearbeitung, insbesondere zum Laserauftragschweißen mittels Laserstrahlung (10). Die Düse besteht aus einer Kammer (4), in der eine in einen Ringspalt (8) fließende Pulvergasmischung gleichmäßig verteilt wird. Zur Verbesserung der Verteilung der Pulvergasmischung wird ein Diffusor (5, 6) eingesetzt. Damit kann die Kammer (4) und somit die Pulverdüse kleiner gebaut werden und an schwer zugängigen Stellen besser eingesetzt werden.