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  • ICALEO 2009 Paper #1705 (Enhancing the Quality and Productivity of Laser Drilling by Changing Process Gas Parameters While Processing)

    Enhancing the Quality and Productivity of Laser Drilling by Changing Process Gas Parameters While Processing
    Authors:
    Jens Dietrich, Lehrstuhl fuer Lasertechnik; 52074 Aachen Germany
    Mihael Brajdic, Lehrstuhl Fuer Lasertechnik; 52074 Aachen Germany
    Sven Engbers, Lehrstuhl Fuer Lasertechnik; -
    Leonhard Klinkmueller, Lehrstuhl Fuer Lasertechnik; 52074 Aachen Germany
    Ingomar Kelbassa, Lehrstuhl Fuer Lasertechnik; 52074 Aachen Germany
    Presented at ICALEO 2009

    When drilling with laser radiation the choice of the process gas and the pressure must be determined as process gas parameters. Choosing the right process gas parameters in order to achieve ...

    $28.00

  • ICALEO 2009 Paper #1704 (Oxide Formation in Acute Laser Percussion Drilled Holes in Single Crystal Nickel Superalloy)

    Oxide Formation in Acute Laser Percussion Drilled Holes in Single Crystal Nickel Superalloy
    Authors:
    Stephen Leigh, Manchester University; Manchester Great Britain
    Kursad Sezer, Manchester University; Manchester Great Britain
    Lin Li, Manchester University; Manchester Great Britain
    Andrew Pinkerton, -; -
    Clive Grafton-Reed, Rolls-Royce Plc; Derby Great Britain
    Martyn Cuttell, Rolls-Royce Plc; Derby Great Britain
    Presented at ICALEO 2009

    One industrial application of laser drilling is the production of cooling holes at acute angles in nickel superalloy single crystal material. However laser drilled holes are inherently associated ...

    $28.00

  • ICALEO 2009 Paper #1703 (Spectroscopic Study of Inconel 718 Plasma Generated during Laser Drilling Process)

    Spectroscopic Study of Inconel 718 Plasma Generated during Laser Drilling Process
    Authors:
    Joonghan Shin, CLAIM, The University of Michigan; Ann Arbor MI USA
    Jyoti Mazumder, -; -
    Presented at ICALEO 2009

    An aero space material, Inconel 718, was laser drilled with a diode pumped solid state Nd:YAG laser. During the laser drilling process, the emission spectra of the Inconel 718 plasma have been recorded and analyzed using an optical emission spectroscopic method. After the process, the drilling depth of the holes produced at various conditions was measured by optical microscope. Temporal histories of the emission line intensity and drilling depth were obtained. The correlation, pre...

    $28.00

  • ICALEO 2009 Paper #1702 (Laser Drilling in Percussion Regime: Study of the Scale Time of the Breakthrough)

    Laser Drilling in Percussion Regime: Study of the Scale Time of the Breakthrough
    Authors:
    Laurent Berthe, Laboratoire pour l'Application des lasers de Puissance (UPR CNRS 1578); Arcueil France
    Maryse Muller, Pimm/Cnrs; Paris France
    Matthieu Schneider, Pimm/Cnrs; Paris France
    Mariette Nivard, Pimm/Cnrs; Paris France
    Presented at ICALEO 2009

    The laser drilling in percussion regime consists in irradiating a target with a laser in the power density range of 10 MW/cm2 and pulse duration in ms range . The beam and the target are static. The material is heated, melted and vaporized. The drilling is produced by the removal of the liquid layer using recoil pressure...

    $28.00

  • ICALEO 2009 Paper #1607 (Spectral Analysis of the Process Emission during Laser Welding of AISI 304 Stainless Steel with Disk and Nd:YAG Laser)

    Spectral Analysis of the Process Emission during Laser Welding of AISI 304 Stainless Steel with Disk and Nd:YAG Laser
    Authors:
    Ali Riza Konuk, University of Twente; Enschede Netherlands
    Ronald Aarts, University of Twente; Enschede Netherlands
    Bert Huis in't Veld, University of Twente; Enschede Netherlands
    Presented at ICALEO 2009

    Optical emissions from the laser welding process can be obtained relatively easy in real-time. Therefore it is very beneficial to establish a clear relation between characteristics of these
    emissions and the resulting weld quality or the occurrence of welding defects for any of the laser types currently applied in industry. Most commonly use...

    $28.00

  • ICALEO 2009 Paper #1607 (A Study About Suitability of Different Welding Processes for the Production of Aluminum Stiffeners for Ship Structure)

    A Study About Suitability of Different Welding Processes for the Production of Aluminum Stiffeners for Ship Structure
    Authors:
    Antti Salminen, Lappeenranta University of Technology; Lappeenranta Finland
    Tuomas Purtonen, Lut; Lappeenranta Finland
    Jussi Tolvanen, Innova; Laitila Finland
    Juho Isotalus, Innova; Laitila Finland
    Presented at ICALEO 2009

    Laser welding has a growing role in manufacturing technology. Keyhole laser welding and laser hybrid welding processes provide good opportunity to weld metallic structures in an efficient way. The most important advantages of laser welding stem from considerable potential gained to product design like low distort...

    $28.00

  • ICALEO 2009 Paper #1605 (Welding of Thick Stainless Steels Plates Up to 50MM with High Brightness Lasers)

    Welding of Thick Stainless Steels Plates Up to 50MM with High Brightness Lasers
    Authors:
    Xudong Zhang, Hitachi Ltd.; Hitachi-shi, Ibaraki-ken Japan
    Eiji Ashida, Hitachi, Ltd.; Hitachi-Shi, Ibaraki-Ken Japan
    Shoh Tarasawa, Hitachi-Ge Nuclear Energy, Ltd.; Hitachi-Shi, Ibaraki-Ken Japan
    Yusuke Anma, Hitachi-Ge Nuclear Energy, Ltd.; Hitachi-Shi, Ibaraki-Ken Japan
    Masaya Okada, Hitachi-Ge Nuclear Energy, Ltd.; Hitachi-Shi, Ibaraki-Ken Japan
    Seiji Katayama, Osaka University; Osaka Japan
    Masami Mizutani, Osaka University; Osaka Japan
    Presented at ICALEO 2009

    Thick-section stainless steels are widely used in components and s...

    $28.00

  • ICALEO 2009 Paper #1604 (Laser Absorption in CO2 Laser Welding of Medium, High and Ultra High Strength Steels)

    Laser Absorption in CO2 Laser Welding of Medium, High and Ultra High Strength Steels
    Authors:
    Azim Ahmad, Lappeenranta University of Technology; Lappeenranta Finland
    Veli Kujanpää, Lappeenranta University of Technology; Lappeenranta Finland
    Presented at ICALEO 2009

    Absorption varies quite a lot in laser welding. Accurate measurement of absorption in laser welding is also a challenging problem. Usually a calorimeter is commonly employed for measuring absorption. In this paper an alternative approach is presented for measuring absorption in laser welding of lean duplex LDX2101 and austenitic stainless steels of type 301 LN and 316 L based on the temperature distribution in the heat...

    $28.00

  • ICALEO 2009 Paper #1603 (Simulation Of Thin Metal Deformation By Laser Welding)

    Simulation Of Thin Metal Deformation By Laser Welding
    Authors:
    Takeji Arai, Chuo University; Tokyo Japan
    Noritaka Asano, -; -
    Presented at ICALEO 2009

    The thermal deformation of the metal is very important factor for the laser welding technology. For a highly accurate welding with sheet metal by the laser, it is necessary to understand the distortion caused by laser processing to a highly accurate welding. At the first, to clarify the deformation values quantitatively when the laser welding of sheet metal, bead on plate by the moving heat source with continuous wave oscillations on the plate was done. It is considered the standard to know the deformation of laser welding. By using...

    $28.00

  • ICALEO 2009 Paper #1601 (Laser Beam Welding of Dissimilar Materials (Invited Presentation, 20 minutes))

    Laser Beam Welding of Dissimilar Materials (Invited Presentation, 20 minutes)
    Authors:
    Rongshi Xiao, Beijing University of Technology; Beijing Peoples Republic of China
    Peng Dong, Beijing University of Technology; Beijing Peoples Republic of China
    Kai Chen, Beijing University of Technology; Beijing Peoples Republic of China
    Presented at ICALEO 2009

    In the modern industrial fields, there is a tendency that more and more parts or structures are compositely made of dissimilar materials, which offers challenges to the joining technology. In this paper, a review of laser beam welding of some dissimilar materials is presented based on the research of the authors group. Th...

    $28.00

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