• ICALEO 2008 Paper #1603 (Laser Cladding of Mesh Structures on HPT Liner and NGV Parts)

    Laser Cladding of Mesh Structures on HPT Liner and NGV Parts
    Authors:
    Bernd Burbaum, Lehrstuhl für Lasertechnik; Aachen Germany
    Ingomar Kelbassa, Lehrstuhl Fuer Lasertechnik, Rwth Aachen University; Aachen Germany
    Patrick Albus, Lehrstuhl Fuer Lasertechnik, Rwth Aachen University; Aachen Germany
    Presented at ICALEO 2008

    Due to the progressive globalisation of economy and the demand for higher mobility, passenger and cargo air traffic is steadily increasing. Therefore, in the aviation sector the efficiency and environmental sustainability are of great importance. Especially for aero engines new materials and designs are necessary to increase performance and efficiency....

    $28.00

  • ICALEO 2008 Paper #1604 (Laser Cladding of Tungsten Carbide Hardfacing Alloys on Steels Used in Mining Industry)

    Laser Cladding of Tungsten Carbide Hardfacing Alloys on Steels Used in Mining Industry
    Authors:
    M.J. Tobar, Universidade Da Coruna; Ferrol Spain
    J.M. Amado, Universidade Da Coruna; Ferrol - a Coruna Spain
    A. Yáñez, Universidade da Coruna; Ferrol Spain
    J. Lamas, Universidade Da Coruna; Ferrol Spain
    J.C. lvarez, Universidade Da Coruna; Ferrol - a Coruna Spain
    Presented at ICALEO 2008

    The abrasive nature of the mechanical processes involved in the mining and mineral industry often cause significant wear to the associated equipment and derived non neglible economic costs. One of the possible strategies to improve the wear resistance of the var...

    $28.00

  • ICALEO 2008 Paper #1605 (High Power Direct Diode Laser Cladding of Stainless and Nickel Alloys)

    High Power Direct Diode Laser Cladding of Stainless and Nickel Alloys
    Authors:
    Brandon Shinn, Siemens Power Generation, Inc.; Orlando FL USA
    Gerald Bruck, Siemens Power Generation, Inc; Orlando FL USA
    Presented at ICALEO 2008

    A four kilowatt high power direct diode laser is demonstrated to clad stainless (UNS S41000) and nickel based (UNS N06002) alloys. Trials are conducted using pre-placed as well as argon fed filler metal powders deposited on matching alloy substrates. Parametric tests are performed to define effects of powder depth, powder feed rate, and travel speed. Relationships between such parameters and physical attributes such as reinforcement area and base metal dilu...

    $28.00

  • ICALEO 2008 Paper #1606 (Laser Cladding Ni-base Composite Coatings Reinforced by In-Situ Synthesized Multiple Carbide Particles)

    Laser Cladding Ni-base Composite Coatings Reinforced by In-Situ Synthesized Multiple Carbide Particles
    Authors:
    Mingxing Ma, ; Beijing Peoples Republic of China
    Ruiquan Kang, ; Beijing Peoples Republic of China
    Minlin Zhong, ; Beijing Peoples Republic of China
    Wenjin Liu, ; Beijing Peoples Republic of China
    Weiming Zhang, ; Beijing Peoples Republic of China
    Yide Kan, ; Beijing Peoples Republic of China
    Hongjun Zhang, ; Beijing Peoples Republic of China
    Presented at ICALEO 2008

    Ni-base composite coatings reinforced by in situ synthesized multiple carbide particles were fabricated on medium carbon steel through ...

    $28.00

  • ICALEO 2008 Paper #1607 (Comparison on Corrosion-Resistance of Inconel 690 Coatings by Nd:YAG Laser and CO2 Laser Deposition for Repairing Nuclear Power Plant Component)

    Comparison on Corrosion-Resistance of Inconel 690 Coatings by Nd:YAG Laser and CO2 Laser Deposition for Repairing Nuclear Power Plant Component
    Authors:
    Dongye Zhang, Tsinghua University, Dept of Mechanical Engineering; Beijing Peoples Republic of China
    Minlin Zhong, Tsinghua University; Beijing Peoples Republic of China
    Yide Kan, Tsinghua University; Beijing Peoples Republic of China
    Presented at ICALEO 2008

    Laser deposition is considered a promising approach for repairing or rejuvenating as-eroded nuclear power plant components after long time of operation to restore their resistance to intergranular-stress-corrosion (IGSC) under rigorous radiation conditions. The IG...

    $28.00

  • ICALEO 2008 Paper #1701 (Imaging in Cooperation with Modeling of Selected Defect Mechanisms during Fiber Laser Welding of Stainless Steel)

    Imaging in Cooperation with Modeling of Selected Defect Mechanisms during Fiber Laser Welding of Stainless Steel
    Authors:
    Alexander Kaplan, Lulea University of Technology; Lulea Sweden
    Elin Westin, Outokumpu Stainless, Avesta Research Center; Avesta Sweden
    Greger Wiklund, Lulea University of Technology; Lulea Sweden
    Peter Norman, Lulea University of Technology; Lulea Sweden
    Presented at ICALEO 2008

    Fiber laser welding of stainless steel was studied for different joint configurations and gaps. The higher focusing capability of fiber lasers compared to traditional Nd:YAG- and CO2-lasers creates a different keyhole and melt pool geometry, usually smaller. The...

    $28.00

  • ICALEO 2008 Paper #1704 (Studying the Quality of Laser Welding Process using Time-frequency Distributions with Rotated Kernel)

    Studying the Quality of Laser Welding Process using Time-frequency Distributions with Rotated Kernel
    Authors:
    Giuseppe D'Angelo, Centro Ricerche Fiat; Orbassano Italy
    Presented at ICALEO 2008

    Laser welding is becoming more and more important in automotive industry and quality of the weld is critical for a successful application. In many cases the increase in welding speed provided by laser welding has caused the welding system operator to be unable to keep up with the production rate while inspecting each part. Therefore, real time on-line inspection of the weld must be provided. To address this need, in the last years a number of on-line inspection systems, have being developed to improve wel...

    $28.00

  • ICALEO 2008 Paper #1705 (Robust Sensing and Predictive Control of Direct Metal Deposition)

    Robust Sensing and Predictive Control of Direct Metal Deposition
    Authors:
    Lijun Song, CLAIM, The University of Michigan; Ann Arbor MI USA
    Jyoti Mazumder, Claim, University of Michigan; Ann Arbor MI USA
    Presented at ICALEO 2008

    Direct metal deposition is one of the rapid manufacturing technologies to fabricate geometrically complicated, dense, near-net-shape components. Deposition process involves a large number of parameters, among which the laser power is considered as the primary manipulated parameter. In order to develop a control system for the process, molten pool temperature during deposition was monitored by a two-color pyrometer. Laser power and molten pool temperature form...

    $28.00

  • ICALEO 2008 Paper #1706 (Closed Loop Control of Laser Welding Processes with Cellular Neural Network (CNN) Cameras)

    Closed Loop Control of Laser Welding Processes with Cellular Neural Network (CNN) Cameras
    Authors:
    F. Abt, Forschungsgesellschaft Fuer Strahlwerkzeuge Fgsw; Stuttgart Germany
    L. Nicolosi, Technische Universit�T Dresden; Dresden Germany
    D. Carl, Ipm Fraunhofer Institut Fuer Physikalische Messtechnik; Freiburg Germany
    A. Blug, Ipm Fraunhofer-Institut Fuer Physikalische Messtechnik; Freiburg Germany
    M. Geese, Wolfgang Von Goethe Universitaet; Frankfurt Am Main Germany
    C. Deininger, Technologiegesellschaft Fuer Strahlwerkzeuge Mbh Tgsw; Stuttgart Germany
    F. Dausinger, Dausinger + Giesen Gmbh; Stuttgart Germany
    H. H�Fler, I...

    $28.00

  • ICALEO 2008 Paper #1707 (Laser Welding of Copper Alloy for Beam Monitor System)

    Laser Welding of Copper Alloy for Beam Monitor System
    Authors:
    Zhiyue Xu, Argonne National Laboratory; Argonne IL USA
    James W. Morgan, Argonne National Laboratory; Argonne USA
    Keng H Leong, Argonne National Laboratory; Argonne IL USA
    James L. Bailey, Argonne National Laboratory; Argonne USA
    Presented at ICALEO 2008

    Beam position monitors (BPM) are critical for beam-based alignment and operation of the worlds first X-ray free electron laser, Linac Coherent Light Source, being built at Stanford Linear Accelerator Center. Fabrication of the BPMs requires welding of components made of copper alloy that is extremely difficult to weld due to its low absorptiv...

    $28.00

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