ICALEO 2011 Paper #802 (Stabilized Copper Welding by Using Power Modulated Green and IR Laser Beams)
Stabilized Copper Welding by Using Power Modulated Green and IR Laser Beams
Authors:
Andreas Heider, Institut fuer Strahlwerkzeuge (IFSW); Stuttgart Germany
Axel Hess, Institut fuer Strahlwerkzeuge (IFSW); Stuttgart Germany
Rudolf Weber, Institut fuer Strahlwerkzeuge (IFSW); Stuttgart Germany
Thomas Graf, Institut fuer Strahlwerkzeuge (IFSW); Stuttgart Germany
Presented at ICALEO 2011
Due to their material properties such as high electrical and thermal conductivity, copper materials are more and more demanded for industrial applications. The same material properties make laser welding of copper a challenging task. Welds in copper at low velocities (v < 10 ...$28.00
ICALEO 2011 Paper #803 (Development of New Processes for Welding of Thermal Al-Cu Solar Absorbers using Diode Lasers)
Development of New Processes for Welding of Thermal Al-Cu Solar Absorbers using Diode Lasers
Authors:
Andre Springer, Laser Zentrum Hannover e.V.; Hannover Germany
Peter Kallage, Laser Zentrum Hannover e.V.; Hannover Germany
Michael Hustedt, Laser Zentrum Hannover e.V.; Hannover Germany
Stephan Barcikowski, Laser Zentrum Hannover e.V.; Hannover Germany
Volker Wesling, Laser Zentrum Hannover e.V.; Hannover Germany
Heinz Haferkamp, Laser Zentrum Hannover e.V.; Hannover Germany
Presented at ICALEO 2011
Flat-plate solar collectors are favorable devices to generate heat from the energy of the sun. The central part of a collector, the s...$28.00
ICALEO 2011 Paper #804 (Modelled Dependency of the Direct Absorption on the Keyhole Wall Waviness during 1 Micron- and 10 Micron-Laser Welding)
Modelled Dependency of the Direct Absorption on the Keyhole Wall Waviness during 1 Micron- and 10 Micron-Laser Welding
Authors:
Alexander F. H. Kaplan, Lulea University of Technology; Lulea Sweden
Presented at ICALEO 2011
During keyhole mode laser welding the absorption of the laser beam at the vapour capillary, the keyhole, takes directly place by Fresnel absorption and indirectly during multiple scattering and by plasma absorption of the propagating beam. The direct Fresnel absorption of the laser beam mainly at the front keyhole wall is the controllable contribution, which requires better understanding. A mathematical first order model enables to estimate the dependency of the keyhole shape ...$28.00
ICALEO 2011 Paper #805 (Dependence of Energy Distribution in the Keyhole on Optical Parameters of the Focusing System in Laser Welding)
Dependence of Energy Distribution in the Keyhole on Optical Parameters of the Focusing System in Laser Welding
Authors:
Martin Sarbort, Institute of Scientific Instruments, AS CR; Brno Czech Republic
Libor Mrna, Institute of Scientific Instruments, AS CR, Dendera a.s.; Bilovice Nad Svitavou Czech Republic
Simon Rerucha, Institute of Scientific Instruments, AS CR; Brno Czech Republic
Petr Jedlicka, Institute of Scientific Instruments, AS CR; Brno Czech Republic
Presented at ICALEO 2011
Deep penetration laser welding performed by continuous high-power laser beam is characteristic by creation of a thin capillary, called keyhole, within the welded material and...$28.00
ICALEO 2011 Paper #806 (Distortion Control during Laser Beam Welding of Shaft-Hub Joints Within a Process Chain)
Distortion Control during Laser Beam Welding of Shaft-Hub Joints Within a Process Chain
Authors:
Frank Buschenhenke, BIAS- Bremer Insitut fur Amgewandte GmbH; Bremen Germany
Thomas Seefeld, BIAS- Bremer Insitut fur Amgewandte GmbH; Bremen
Frank Vollertsen, BIAS- Bremer Insitut fur Amgewandte GmbH; Bremen
Presented at ICALEO 2011
The joining of shaft-hub connections is gaining importance in power train applications. The quality demands in abrasion and power transmission are playing a major role. Dimensional as well as repeat accuracies are essential quality criteria, which have to be controlled. The laser beam sources of the new generation permit a high power welding ...$28.00
ICALEO 2011 Paper #901 (Hard Facing Engineering Surfaces Using Supersonic Laser Deposition of Stellite-6)
Hard Facing Engineering Surfaces Using Supersonic Laser Deposition of Stellite-6
Authors:
Rocco Lupoi, University of Cambridge; Cambridge Great Britain
Andrew Cockburn, University of Cambridge; Cambridge Great Britain
Martin Sparkes, University of Cambridge; Cambridge Great Britain
Chris Bryan, Zhejiang University of Science and Technology; -
Fang Luo, University of Cambridge; Cambridge Great Britain
William O'Neill, University of Cambridge; Cambridge Great Britain
Presented at ICALEO 2011
Supersonic Laser Deposition (SLD) has demonstrated the ability to deposit a range of metal coatings on a wide range of substrates, including T...$28.00
ICALEO 2011 Paper #902 (A Comparative Study of 3D Laser Surface Modification and the Humping Phenomenon)
A Comparative Study of 3D Laser Surface Modification and the Humping Phenomenon
Authors:
Caroline Earl, The University of Cambridge, TWI Ltd.; Cambridge Great Britain
Paul Hilton, TWI Ltd.; Cambridge Great Britain
Jon Blackburn, TWI Ltd.; Cambridge Great Britain
Bill O'Neill, The University of Cambridge; Cambridge Great Britain
Presented at ICALEO 2011
Surfi-Sculpt® is a three dimensional surface modification technique that enables functional features to be formed from a substrate material by repeated swipes of a highly focused power beam. Similar characteristics to the humping weld instability phenomenon have been observed in the Surfi-Sculpt® process a...$28.00
ICALEO 2011 Paper #903 (Feedback Control of Processing Temperature in Laser Beam Hardening of Production Dies)
Feedback Control of Processing Temperature in Laser Beam Hardening of Production Dies
Authors:
Hongping Gu, Stronach Centre for Innovation (SCFI), Magna International; Aurora ON
Boris Shulkin, Stronach Cenre for Innovation (SCFI), Magna International; Aurora ON Canada
Presented at ICALEO 2011
Automotive draw and line dies are often subject to high wear and tear in the areas with convex radii during volume production and require heat treatment to improve the mechanical properties in these areas in order to increase the operating life of the die. Laser beam transformation hardening has been proven to be a viable technology for such type of heat treatment. It has been demonstrated th...$28.00
ICALEO 2011 Paper #904 (Thermal Modification of Zinc-Aluminum Coated Steel Using Lasers)
Thermal Modification of Zinc-Aluminum Coated Steel Using Lasers
Authors:
Remya Mathew, CAST CRC, Swinburne University of Technology; Hawthorn,Victoria Australia
Paul Stoddart, Industrial Research Institute Swinburne, Swinburne University of Technology; Melbourne Australia
David Nolan, Bluescope Steel Limited; New South Wales Australia
Yvonne Durandet, CAST CRC, Swinburne University of Technology; Melbourne Australia
Presented at ICALEO 2011
In many markets, Zn-55%Al-1.6%Si coated steel products are an important alternative to traditional galvanized products in the building industry. They combine the barrier protection of aluminium with the sacrificial prot...$28.00
ICALEO 2011 Paper #905 (Laser Heat Treatment with Latest System Components)
Laser Heat Treatment with Latest System Components
Authors:
Steffen Bonss, Fraunhofer IWS; Dresden Germany
Jan Hannweber, Fraunhofer IWS; -
Udo Karsunke, Fraunhofer IWS; -
Stefan Kuehn, Fraunhofer IWS; -
Marko Seifert, Fraunhofer IWS; -
Eckhard Beyer, Fraunhofer IWS, Dresden University of Technology; -
Presented at ICALEO 2011
Laser beam heat treatment has been established during the last years as a complementary technology for local hardening treatment tasks at tool manufacturing, automotive industry and many others. Especially new high power diode lasers and a lot of process supporting systems, what have been developed in r...$28.00