• ICALEO 2012 Paper #505 (A Comparison of Hot Cracking Sensibility of Some Alloy 625 Powders on Laser Cladding)

    A Comparison of Hot Cracking Sensibility of Some Alloy 625 Powders on Laser Cladding
    Authors:
    Jonne Näkki, Department of Materials Science, Tampere Univ. of Technology, Technology Centre Ketek Ltd; Kokkola Finland
    Jari Tuominen, Department of Materials Science, Tampere Univ. of Technology; -
    Petri Vuoristo, Department of Materials Science, Tampere Univ. of Technology; -
    Presented at ICALEO 2012

    Some properties of laser claddings made with several
    commercially available alloy 625 powders were
    investigated. Nickel based alloy 625, generally
    known also as Inconel 625, is widely used also on
    laser claddings due to its good corrosion properties in
    various environm...

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  • ICALEO 2012 Paper #507 (Recent Developments in High Power Laser Cladding Techniques)

    Recent Developments in High Power Laser Cladding Techniques
    Authors:
    Jari Tuominen, Tampere Univ. of Technology, Department of Materials Science; Tampere Finland
    Jonne Näkki, Tampere Univ. of Technology, Department of Materials Science, Technology Centre Ketek Ltd; Tampere Finland
    Henri Pajukoski, Tampere Univ. of Technology, Department of Materials Science; Tampere Finland
    Tuomo Peltola, Technology Centre Ketek Ltd.; Kokkola Finland
    Petri Vuoristo, Tampere Univ. of Technology, Department of Materials Science; Tampere Finland
    Presented at ICALEO 2012

    Industrial laser cladding is typically done with 3-6kW continuous wave gas and solid state la...

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  • ICALEO 2012 Paper #509 (Structure of Ni-Alloys Deposited by Laser Powder Deposition on Single Crystal Superalloy Substrates)

    Structure of Ni-Alloys Deposited by Laser Powder Deposition on Single Crystal Superalloy Substrates
    Authors:
    Rui Vilar, Instituto Superior Técnico and ICEMS Instituto de Ciência e Engenharia de Materiais e Superfícies, Univ. Tecnica de Lisboa; Lisbon Portugal
    Amelia Almeida, Instituto Superior Técnico and ICEMS Instituto de Ciência e Engenharia de Materiais e Superfícies, Univ. Tecnica de Lisboa; -
    Edson Costa, Department of Mechanical Engineering, Kyushu Univ.; -
    Presented at ICALEO 2012

    Laser Powder Deposition is becoming one of the most promising methods for the repairing of the single crystal Ni-based superalloys components presently used in the h...

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  • ICALEO 2012 Paper #602 (Process Monitoring and Control for Laser-Based Thin Film Treatment)

    Process Monitoring and Control for Laser-Based Thin Film Treatment
    Authors:
    Christian Vedder, Fraunhofer Institute for Laser Technology (ILT); Aachen Germany
    Jochen Stollenwerk, Fraunhofer Institute for Laser Technology (ILT), Chair for the Technology of Optical Systems TOS, RWTH Aachen Univ.; -
    Konrad Wissenbach, Fraunhofer Institute for Laser Technology (ILT); -
    Presented at ICALEO 2012

    Thin films are powerful tools for improving performance and increasing the scope of technical components in many areas of modern life. In many cases, thin film processing is a 2-step process involving film deposition (e.g., inkjet, screen printing) followed by heat treatment, to o...

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  • ICALEO 2012 Paper #604 (Detection of Faults in Laser Beam Welds by Near-Infrared Camera Observation)

    Detection of Faults in Laser Beam Welds by Near-Infrared Camera Observation
    Authors:
    Friedhelm Dorsch, TRUMPF Werkzeugmaschinen GmbH & Co. KG; Ditzingen Germany
    Holger Braun, TRUMPF Werkzeugmaschinen GmbH & Co. KG; Ditzingen Germany
    Steffen Keler, TRUMPF Werkzeugmaschinen GmbH & Co. KG; Ditzingen Germany
    Dieter Pfitzner, TRUMPF Werkzeugmaschinen GmbH & Co. KG; Ditzingen Germany
    Volker Rominger, TRUMPF Laser- und Systemtechnik GmbH; Ditzingen Germany
    Presented at ICALEO 2012

    We monitor thin disk laser beam welding processes coaxially through the welding optics with a camera that is sensitive in the near-infrared spectrum (1000 to 1800 nm). Wi...

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  • ICALEO 2012 Paper #605 (Comprehensive Monitoring and Control of Laser Hybrid Arc Welding in Industrial Production)

    Comprehensive Monitoring and Control of Laser Hybrid Arc Welding in Industrial Production
    Authors:
    Jan Karlsson, Department of Engineering Sciences and Mathematics, Luleå University of Technology; Luleå USA
    Alexander F. H. Kaplan, Department of Engineering Sciences and Mathematics, Luleå University of Technology; Luleå Sweden
    Presented at ICALEO 2012

    Welding requires acceptable quality along the entire weld. In particular, the weld surface geometry has a vital role in ensuring an adequate fatigue life. This paper describes the results of a case study of laser hybrid arc welding of a structural vehicle component of complex geometry. By isolating the various weld geometries, alo...

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  • ICALEO 2012 Paper #606 (Diagnostics of the CO2-Laser Cutting Process by Evaluating the Back-Reflected Laser Power)

    Diagnostics of the CO2-Laser Cutting Process by Evaluating the Back-Reflected Laser Power
    Authors:
    David Schindhelm, GSaME Graduste School of Excellence Advanced Manufacturing Engineering; Stuttgart Germany
    Rudolf Weber, IFSW Institut fuer Strahlwerkzeuge; Stuttgart Germany
    Thomas Graf, IFSW Institut fuer Strahlwerkzeuge; Stuttgart Germany
    Presented at ICALEO 2012

    In this report we analyze the information content of back reflected laser light during high-power CO2-laser cutting of metal sheets. A fast sensor which is mounted coaxially to the beam path of a CO2-laser cutting machine behind a scraper mirror detects the back reflected laser power from the interaction zone...

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  • ICALEO 2012 Paper #607 (Analysis of Coaxial Vision Systems for Real-Time Z-Height Control for Laser Cladding Process)

    Analysis of Coaxial Vision Systems for Real-Time Z-Height Control for Laser Cladding Process
    Authors:
    Rezak Mezari, STAMP - Arts et Métiers ParisTech; Paris France
    Pascal Aubry, STAMP - Arts et Métiers ParisTech; Paris France
    Thierry Malot, STAMP - Arts et Métiers ParisTech; Paris France
    Kevin Verdier, STAMP - Arts et Métiers ParisTech; Paris France
    Presented at ICALEO 2012

    In order to generate 3D complex structures by laser metal deposition, especially for Direct Manufacturing of parts where the number of deposited layers can be high, it is necessary to control the width and the height of the deposited material. First, we present a general overview o...

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  • ICALEO 2012 Paper #609 (The Study About the Algorithm of the Detecting Feature on Weld Images During Laser Welding Processes)

    The Study About the Algorithm of the Detecting Feature on Weld Images During Laser Welding Processes
    Authors:
    Chen Xinsong, National Key Laboratory of Science and Technology on Power Beam Processes, BAMTRI; Beijing Peoples Republic of China
    Duan Aiqin, National Key Laboratory of Science and Technology on Power Beam Processes, BAMTRI; Beijing Peoples Republic of China
    Wang Bin, National Key Laboratory of Science and Technology on Power Beam Processes, BAMTRI; Beijing Peoples Republic of China
    Presented at ICALEO 2012

    In laser welding important components, precise seam tracking usually needs to be used to assure the quality of final weld, because of small laser beam focu...

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  • ICALEO 2012 Paper #610 (With Fieldbus Interfaces and Robust Design Laser Beam Monitoring Meets the Requirements of Applications in Production)

    With Fieldbus Interfaces and Robust Design Laser Beam Monitoring Meets the Requirements of Applications in Production
    Authors:
    Otto Märten, PRIMES GmbH; -
    Stefan Wolf, PRIMES GmbH; Pfungstadt
    Harald Schwede, PRIMES GmbH; Pfungstadt
    Volker Brandl, PRIMES GmbH; Pfungstadt Germany
    Reinhard Kramer, PRIMES GmbH; Pfungstadt Germany
    Presented at ICALEO 2012

    With laser material processing, the properties of laser beams are important parameters for achieving and maintaining high processing quality. Laser power pulse energy, but also beam distribution and size at the work piece as well as the beam propagation parameters, are strongly correlated t...

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