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  • ICALEO 2007 Paper #701 (Collaboration of Physical and Metallurgical Viewpoints for Understanding and Process Development of Laser Welding)

    Collaboration of Physical and Metallurgical Viewpoints for Understanding and Process Development of Laser Welding
    Authors:
    Seiji Katayama, Osaka University; Ibaraki, Osaka Japan
    Presented at ICALEO 2007


    I have belonged to Prof. Matsunawas laboratory in JWRI since 1981 until his retirement from Osaka University. Prof. A. Matsunawa and I approached our experiments and researches from physical and metallurgical viewpoints in our expert fields to understand the penetration and phenomena in laser welding. The presentation will introduce our fruitful results of plume and keyhole behavior, melt flows and bubbles and pores formation in the molten pool during laser and hybrid welding. He was mos...

    $28.00

  • ICALEO 2007 Paper #610 (The Impact of Zinc-coating on Laser Hybrid Welding of Steel)

    The Impact of Zinc-coating on Laser Hybrid Welding of Steel
    Authors:
    Alexander Kaplan, Luleå University of Technology; Luleå Sweden
    Greger Wiklund, Luleå University of Technology; Luleå Sweden
    Tony Nilsson, SSAB Tunnplåt; Bolänge Sweden
    Presented at ICALEO 2007

    Hybrid Nd:YAG/MAG welding of ultra high strength steel is studied for 1,5 mm thick sheets in I-, T- and overlap joint type configuration. Untreated and zinc-coated steels were compared, causing distinct differences in terms of process stability and welding result. For zinc coating it can be distinguished between domains of trapped zinc layers like in overlap and T-joints and free surface zinc coatings. Wh...

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  • ICALEO 2007 Paper #609 (Laser Welding of a Lean Duplex Stainless Steel)

    Laser Welding of a Lean Duplex Stainless Steel
    Authors:
    Elin Westin, Outokumpu Stainless; Avesta Sweden
    Enda Keehan, Creganna medical devices; Galway Ireland
    Mats Ström, Nordic Laser Production; Mölndal Sweden
    Bernt von Brömssen, Nordic Laser Production; Mölndal Sweden
    Presented at ICALEO 2007

    Nd:YAG laser welding and laser gas tungsten arc (GTA) hybrid welding of the lean duplex stainless steel LDX 2101® (EN 1.4162, UNS S32101) were performed with and without filler wire and nitrogen additions to the shielding gas. The high energy density associated with laser welding of duplex stainless steels can affect the mechanical strength and corrosion resista...

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  • ICALEO 2007 Paper #608 (Hybrid Laser Welding of Dual Phase Steel DP600: Microstructural and Mechanical Properties)

    Hybrid Laser Welding of Dual Phase Steel DP600: Microstructural and Mechanical Properties
    Authors:
    Jo Verwimp, VITO; Mol Belgium
    Eric Geerinckx, Vito; Mol Belgium
    Jan Gedopt, VITO; Mol Belgium
    Wim Van Haver, Belgian Welding Institute; Ghent Belgium
    Alfred Dhooge, Belgian Welding Institute / Faculty of Engineering, Ghent University; Ghent Belgium
    Debby Criel, Arcelor Research Industry Gent (Ocas); Zelzate Belgium
    Presented at ICALEO 2007

    The desire to combine the high productivity of laser welding with the robustness in terms of joint preparation of the GMAW process constitutes one of the main reasons for the increasing interest in...

    $28.00

  • ICALEO 2007 Paper #606 (Laser-Arc Hybrid Welding for the Cover Plate of ITER TF Coil)

    Laser-Arc Hybrid Welding for the Cover Plate of ITER TF Coil
    Authors:
    Katsunori Shiihara, Toshiba Corporation; Yokohama Japan
    Y. Makino, Toshiba Corporation; Yokohama Japan
    T. Ogawa, Toshiba Corporation; Yokohama Japan
    S. Asai, Toshiba Corporation; Yokohama Japan
    T. Kanahara, Toshiba Corporation; Yokohama Japan
    I. Senda, Toshiba Corporation; Yokohama Japan
    K. Okuno, Japan Atomic Energy Agency; Ibaraki Japan
    N. Koizumi, Japan Atomic Energy Agency; Ibaraki Japan
    K. Matsui, Japan Atomic Energy Agency; Ibaraki Japan
    Presented at ICALEO 2007

    A laser-arc hybrid welding combining the laser beam and ...

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  • ICALEO 2007 Paper #605 (Robot Application for Laser-GMA Hybrid Welding in Shipbuilding)

    Robot Application for Laser-GMA Hybrid Welding in Shipbuilding
    Authors:
    Simon Olschok, ISF Welding and Joining Institute, RWTH Aachen University; Aachen Germany
    Uwe Reisgen, ISF - Welding and Joining Institute, RWTH Aachen University; Aachen Germany
    Ulrich Dilthey, ISF Welding and Joining Institute, RWTH Aachen University; Aachen Germany
    Presented at ICALEO 2007

    Laser hybrid welding stands for a process where laser beam and arc are acting in one common process zone. For five years now, this method has been successfully employed for V-type welds and fillet welds by the Meyerwerft -Shipyard. A new research project deals with the problems of vertical down welds a...

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  • ICALEO 2007 Paper #604 (Progress in Laser-MAG Hybrid Welding of High-Strength Steels Up to 30 MM Thickness)

    Progress in Laser-MAG Hybrid Welding of High-Strength Steels Up to 30 MM Thickness
    Authors:
    Dirk Petring, Fraunhofer ILT; Aachen Germany
    Christian Fuhrmann, Copeland GmbH; Aachen Germany
    Norbert Wolf, Fraunhofer ILT; Aachen Germany
    Reinhart Poprawe, Fraunhofer ILT; Aachen Germany
    Presented at ICALEO 2007

    Within the European project HYBLAS, funded by the Research Fund for Coal and Steel (RFCS), significant progress has been achieved in laser-MAG hybrid welding of thick high-strength steel plates up to 30 mm. Results are presented in this paper. Fraunhofer ILT as leader of the HYBLAS work package Process development and production of welds, has perform...

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  • ICALEO 2007 Paper #603 (Laser-Arc Welding of Duplex Stainless Steel)

    Laser-Arc Welding of Duplex Stainless Steel
    Authors:
    Ambroise Vandewynckele, Aimen; Porrino Spain
    Eva Vaamonde Couso, AIMEN; Porriño Spain
    Gabriel Quintáns Rodríguez, FACTORIAS VULCANO; VIGO Spain
    Jorge Luis Arias Otero, AIMEN; Porriño Spain
    María Peréz de Lama, FACTORIAS VULCANO; VIGO Spain
    Presented at ICALEO 2007

    Duplex stainless steels are used in shipbuilding industry to build chemical and oil tanker vessels. The use of these steels is justified to ensure good corrosion behaviour during lifetime. The main limitation of traditional welding processes when welding duplex stainless steel is that the level of distortion reached is very h...

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  • ICALEO 2007 Paper #602 (MIG-Laser Combined Welding of Aluminum Alloy to 304 Stainless Steel)

    MIG-Laser Combined Welding of Aluminum Alloy to 304 Stainless Steel
    Authors:
    Giuseppe Casalino, DIMeG - Politecnico di Bari; Bari Italy
    Carlo Rella, DIMeG Politecnico di Bari; Viale Japigia Italy
    Presented at ICALEO 2007

    In this paper a study on some aspects of the weldability of a Magnesium Aluminium alloy to an austenitic stainless steel through a MIG-Laser combined heat source is presented. In particular the effect on the interface between the two alloys due to the heat source position over the welding sheets was investigated. Using either a steel or an aluminium feed wire the combined heat source was positioned in the following working positions the ideal axis from the torch to...

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  • ICALEO 2007 Paper #601 (On the Influence of Metal Cored Wire Composition on the Laser Hybrid Welding Process)

    On the Influence of Metal Cored Wire Composition on the Laser Hybrid Welding Process
    Authors:
    Alexander Kaplan, Lulea University of Technology; Lulea Sweden
    Jan Zachrisson, Esab Ab; Gothenburg Sweden
    Pål (Paul) Dyberg, ESAB AB; Gothenburg Sweden
    Presented at ICALEO 2007

    Metal cored wires are often used in gas metal arc welding to increase productivity. Cored wires can, however, also easily be designed to affect weld metal composition or arc characteristics. Specially formulated metal cored wires, designed for laser hybrid welding, could therefore potentially be used to improve the arc and weld pool characteristics and enhance the process flexibility, robustness and pr...

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