Precise and efficient

Coaxial power nozzles guide powder through a coniform

annular gap, which encircles the laser beam, into the melt

pool. Thanks to this coniform powder supply, a powder-jet

focus of less than 0.4 mm can be reached. This way, even

for narrow deposition tracks of less than a millimeter, high

powderefficiencyisattained.

The compact construction of the powder nozzles enables

locationstobeprocessedwhicharedifficulttoreach.The

connection of the powder nozzle on a modular cladding head

allows a simple and quick exchanging of the different nozzle

types (selection of powder focus and maximum laser power).

This way, a machine can easily be adapted to perform

different cladding tasks. The integrated water cooling

guarantees continuous operation. An adaptation to different

optics is possible.

Contact

Dipl.-Ing. (FH) Stefan Jung

Telephone +49 241 8906-409

stefan.jung@ilt.fraunhofer.de

Dipl.-Ing. Gerhard Backes

Telephone +49 241 8906-410

gerhard.backes@ilt.fraunhofer.de

1 Powder-jet nozzle COAX-40-F (Ø 40 mm)

2 Nozzle COAX-40-S (Ø 40 mm)

3 Nozzle COAX-50-S (Ø 50 mm)

COAXIAL POwDER NOzzLES

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Fraunhofer Institute for Laser Technology ILT, www.ilt.fraunhofer.de

DQS certified by DIN EN ISO 9001, Reg.-No.: DE-69572-01

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Technical Specifications

Laser beam sources solid-state, diode, CO2

Laser power up to 5 kW (dependent upon the

laser beam source and application)

Weight (incl. adapter plate max. 3 kg

and adjustment device)

Processing angles max. 20° to the vertical

Nozzletypes •COAx-40-S

•COAx-40-F

•COAx-50-S

•COAx-50-F

Stand-Off 7 - 11 mm

Powder particle size 20 - 100 µm (recommended)

Power-jet focus Ø 0.3 - 1.5 mm

Possible track widths 0.1 - 5 mm (recommended)

Max.powderefficiency upto98%attrackwidthsof3mm

2 3