Laser welding head with an improved nozzle

A laser welding head is claimed comprising a nozzle (10) with an outlet diameter (d) that is very much reduced. In the case of a carbon dioxide laser with a focal length of 150 mm this diameter (d) would be 2.5 mm. The nozzle (10) has an internal surface (11) that is conical with a half angle (a) at...

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Bibliographische Detailangaben
Hauptverfasser:	ZANOLIN, GERARD LOUIS, GOUTINES, MARIUS JEAN-MARIE, LOREAU, JEAN-YVES
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	A laser welding head is claimed comprising a nozzle (10) with an outlet diameter (d) that is very much reduced. In the case of a carbon dioxide laser with a focal length of 150 mm this diameter (d) would be 2.5 mm. The nozzle (10) has an internal surface (11) that is conical with a half angle (a) at its summit of 15 degrees. It presents an outlet zone with a radius (r) that is almost double the diameter (d), with a value of 4 mm in the case of the laser cited above. The inner surface (11) of the nozzle (10) has a surface state at least as good as a value of 0.8 Ra. Une tête de soudage LASER comporte une buse (10) à diamètre d de sortie très réduit, d valant 2,5 mm pour un faisceau LASER (6) CO2 d'une longueur focale de 150 mm et présentant une surface interne (11) conique, le demi-angle a au sommet valant 15 degrés pour le faisceau (6) et l'état de surface étant aussi bon que Ra 0,8, la zone de sortie présentant un rayonnage r proche du double du diametre d.