• ICALEO 2011 Paper #307 (Comparison of Spatter Characteristics in Fiber and CO2 Laser Beam Welding of Aluminum Alloy)

    Comparison of Spatter Characteristics in Fiber and CO2 Laser Beam Welding of Aluminum Alloy
    Authors:
    Hua Cai, Beijing University of Technology; Beijing Peoples Republic of China
    Rongshi Xiao, Beijing University of Technology; Beijing Peoples Republic of China
    Presented at ICALEO 2011

    Spatters in laser penetration welding of aluminum alloys will pollute the focusing system, which would affect the processing stability and welding quality. Furthermore, the spatter characteristics can reflect the laser welding process in some degree. In this paper, the spatter characteristics in fiber and CO2 laser welding of 6061-T6 aluminum alloy are investigated. Dynamic behavior of spatters is reco...

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  • ICALEO 2011 Paper #308 (Understanding the Influence of the Focal Position in Laser Welding on Spatter Reduction)

    Understanding the Influence of the Focal Position in Laser Welding on Spatter Reduction
    Authors:
    Jan-Philipp Weberpals, Institut fuer Strahlwerkzeuge (IFSW); Stuttgart Germany
    Philipp Krueger, Institut fuer Strahlwerkzeuge (IFSW); Stuttgart Germany
    Peter Berger, Institut fuer Strahlwerkzeuge (IFSW); Stuttgart Germany
    Thomas Graf, Institut fuer Strahlwerkzeuge (IFSW); Stuttgart Germany
    Presented at ICALEO 2011

    Particularly the automation and industrialization of thermal material processing with lasers of 1 micrometer-radiation makes high demands on the resulting welding quality. Indeed, current laser systems with strong focusability exhibit a high innovatio...

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  • ICALEO 2011 Paper #309 (Laser Beam Welding with High-Frequency Beam Oscillation: Welding of Dissimilar Materials with Brilliant Fiber Lasers)

    Laser Beam Welding with High-Frequency Beam Oscillation: Welding of Dissimilar Materials with Brilliant Fiber Lasers
    Authors:
    Mathias Kraetzsch, Fraunhofer Institute for Material and Beam Technology (IWS); Dresden Germany
    Jens Standfuss, Fraunhofer Institute for Material and Beam Technology (IWS); - USA
    Annett Klotzbach, Fraunhofer Institute for Material and Beam Technology (IWS); -
    Joerg Kaspar, Fraunhofer Institute for Material and Beam Technology (IWS); -
    Berndt Brenner, Fraunhofer Institute for Material and Beam Technology (IWS); Dresden Germany
    Eckhard Beyer, Fraunhofer Institute for Material and Beam Technology (IWS), Dresden University of ...

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  • ICALEO 2011 Paper #310 (Dual Core Delivery Fibers for 1µm High Power Lasers Increasing the Flexibility in Applications)

    Dual Core Delivery Fibers for 1µm High Power Lasers Increasing the Flexibility in Applications
    Authors:
    Klaus Loeffler, TRUMPF Laser and Systems GmbH; Ditzingen Germany
    Ruediger Brockmann, TRUMPF Laser and Systems GmbH; -
    Ralf Kohlloeffel, TRUMPF Laser and Systems GmbH; Ditzingen Germany
    Presented at ICALEO 2011

    During the last 5 years the 1µm lasers have gained significant in beam quality. But there are several industrial laser applications that are only justifiable if the system offers the flexibility of cutting with 100µm fiber and just by a software switch to move into welding, where a much larger spot size is required. Up to now such applications have been don...

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  • ICALEO 2011 Paper #402 (X-Ray Videography for Investigation of Capillary and Melt Pool Dynamics in Different Materials)

    X-Ray Videography for Investigation of Capillary and Melt Pool Dynamics in Different Materials
    Authors:
    Felix Abt, IFSW, Institut Fuer Strahlwerkzeuge; Baden-Wurttemberg Germany
    Meiko Boley, IFSW, Institut Fuer Strahlwerkzeuge; Stuttgart Germany
    Rudolf Weber, IFSW, Institut Fuer Strahlwerkzeuge; Stuttgart Germany
    Thomas Graf, IFSW, Institut Fuer Strahlwerkzeuge; Stuttgart Germany
    Presented at ICALEO 2011

    The investigation of capillary and melt pool dynamics in laser welding processes with conventional diagnostic equipment is very challenging. High speed cameras in the visual and infrared spectrum are offering brilliant image quality and outstanding frame r...

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  • ICALEO 2011 Paper #403 (Effect of Process Parameters to Monitoring of Laser Assisted Additive Manufacturing of Alumina Ceramics)

    Effect of Process Parameters to Monitoring of Laser Assisted Additive Manufacturing of Alumina Ceramics
    Authors:
    Lauri Taimisto, Lappeenranta University of Technology; Lappeenranta Finland
    Antti Lehti, Lappeenranta University of Technology; Lappeenranta
    Heidi Piili, Lappeenranta University of Technology; Lappeenranta Finland
    Bin Qian, University of Stockholm; Stockholm Sweden
    Olli Nyrhilä, EOS Finland; Turku Finland
    Zhijian Shen, University of Stockholm; Stockholm Sweden
    Antti Salminen, Lappeenranta University of Technology, Machine Technology Centre Turku Ltd.; Lappeenranta Finland
    Presented at ICALEO 2011

    Nowadays...

    $28.00

  • ICALEO 2011 Paper #404 (Correlation Between Pyrometer Monitoring and Active Illumination Imaging of Laser Assisted Additive Manufacturing of Stainless Steel)

    Correlation Between Pyrometer Monitoring and Active Illumination Imaging of Laser Assisted Additive Manufacturing of Stainless Steel
    Authors:
    Antti Lehti, Lappeenranta University of Technology; Lappeenranta Finland
    Lauri Taimisto, Lappeenranta University of Technology; Lappeenranta Finland
    Heidi Piili, Lappeenranta University of Technology; Lappeenranta Finland
    Olli Nyrhilä, EOS Finland; Turku Finland
    Antti Salminen, Lappeenranta University of Technology, Machine Technology Centre Turku Ltd.; Lappeenranta Finland
    Presented at ICALEO 2011

    Laser assisted additive manufacturing of stainless steel is a method for manufacturing 3D parts from stain...

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  • ICALEO 2011 Paper #405 (Improvements in Laser Cladding Process Through an FPGA-Based Control System)

    Improvements in Laser Cladding Process Through an FPGA-Based Control System
    Authors:
    Felix Vidal, AIMEN Technology Centre; PorriñO-Pontevedra Spain
    J. L. Mato, AIMEN Technology Centre; PorriñO-Pontevedra Spain
    M. Angeles Montealegre, AIMEN Technology Centre; PorriñO Spain
    Pablo Colodrón, University of Vigo; PorriñO- Pontevedra Spain
    Jose Fariña, University of Vigo; Vigo-Pontevedra
    Juan J. Rodriguez-Andina, University of Vigo; Vigo- Pontevedra Spain
    Presented at ICALEO 2011

    Laser cladding processing has been used in different industry sector to improve the surface properties or to reconstruct damaged pieces. In order to cove...

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  • ICALEO 2011 Paper #406 (Automatic In-Process Control of Laser Metal-Wire Deposition Based on Sensor Feedback)

    Automatic In-Process Control of Laser Metal-Wire Deposition Based on Sensor Feedback
    Authors:
    Almir Herali, University West; Trollhattan Sweden
    Anna-Karin Christiansson, University West; Trollhattan Sweden
    Presented at ICALEO 2011

    This paper describes a laser metal deposition system that is based on robotized laser welding and wire filler material. The system has been found suitable for the manufacture of simple but large shapes with high metallurgical requirements such as bosses or flanges found on aero engine components. Several benefits have been identified with the usage of wire filler compared to powderized feedstock, such as better process efficiency, higher deposition rate...

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  • ICALEO 2011 Paper #407 (High Speed Video Analysis of Melt Flow Inside Fiber Laser Welding Keyholes)

    High Speed Video Analysis of Melt Flow Inside Fiber Laser Welding Keyholes
    Authors:
    Ingemar Eriksson, Luleå University of Technology ; Lulea Sweden
    John Powell, Luleå University of Technology ; Nottingham Great Britain
    Alexander Kaplan, Luleå University of Technology ; Luleå Sweden
    Presented at ICALEO 2011

    A high speed video survey of melt flow within fibre laser welding keyholes has revealed a number of interesting observations about the mechanics of weld formation. Using Streak Images and 2D-FFT (Fast Fourier Transform) techniques to interpret the video results, quantitative values of fluid flow velocities down the keyhole wall have been established. The re...

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