Paper Titles
Mechanical Properties of Compound-Extruded Aluminium-Matrix Profiles under Quasi-Static Loading Conditions
p.23
Flying Cutting of Spatially Curved Extrusion Profiles
p.35
3D-Laser Processing of Spatially Curved Profiles
p.43
Analysis and Simulation of Cutting Technologies for Lightweight Frame Components
p.53
Laser Bifocal Hybrid Welding of Aluminum
p.65
Investigation of the Influence of Process Parameters on the Structure and the Mechanical Properties of Joints Produced by Electromagnetic Compression
p.79
Joining by Forming of Lightweight Frame Structures
p.89
Seam Weld Positioning for Composite Extrusion
p.101
In-Process Simulation of Multi-Axis Milling in the Production of Lightweight Structures
p.111

Laser Bifocal Hybrid Welding of Aluminum

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Abstract:

This paper renders research into the fundamentals governing the melt pool dynamics of a hybrid bifocal laser welding system consisting of an Nd:YAG and a high power diode laser (HPDL). The resulting superposition of keyhole by heat conduction mode welding is assayed for extruded aluminum. In particular the diffusion of the surface oxygen layer is considered. By comparing the results attainable by bifocal laser hybrid welding to the constituent laser processes synergetic effects of the laser hybrid can be demonstrated. These are namely the doubling of the welding speed from 2.0 min-1 to 4.0 m min-1, the reduction of the roughness of the weld surface from 60 om to approximately 10 om and an increase in energy transfer efficiency. The experimental investigations verifying these synergies are outlined and discussed.

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Periodical:

Advanced Materials Research (Volume 10)

Pages:

65-78

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.10.65

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Online since:

February 2006

Authors:

Andreas Trautmann, Michael F. Zaeh

Keywords:

Aluminum (Al), Bifocal, EN AW-6060, Filler Wire, Finish Crater, Hybrid, Laser Welding

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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