• ICALEO 2012 Paper #1204 (Generic Parameters Governing the Biofunctionality of Laser Surface Engineered Nylon 6,6)

    Generic Parameters Governing the Biofunctionality of Laser Surface Engineered Nylon 6,6
    Authors:
    David Waugh, School of Engineering, Univ. of Lincoln ; Lincoln Great Britain
    Jonathan Lawrence, School of Engineering, Univ. of Lincoln; Lincoln Great Britain
    Presented at ICALEO 2012

    On account of an ever increasing demand on medicine there is a need and a drive by the biomedical industry to develop robust and predictable implant technology. This paper gives an account of the implementation of CO2 and KrF excimer laser systems to modulate the biofunctionality of nylon 6,6 in terms of osteoblast cell response. It has been identified that there were correlative trends between the cell re...

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  • ICALEO 2012 Paper #1205 (Process Map Approach to Laser Transformation Hardening of Carbon Steels)

    Process Map Approach to Laser Transformation Hardening of Carbon Steels
    Authors:
    Hyungson Ki, School of Mechanical & Advanced Materials Engineering, Ulsan National Institute of Science and Technology (UNIST); Ulsan Metropolitan City South Korea
    Sangwoo So, School of Mechanical & Advanced Materials Engineering, Ulsan National Institute of Science and Technology (UNIST); Ulsan South Korea
    Presented at ICALEO 2012

    In this study, we present a novel approach for studying laser transformation hardening of carbon steels based on process maps. Due to the uniform beam profile, this approach is especially suited for diode lasers. Using the melting temperature and A3 temperature of the steel,...

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  • ICALEO 2012 Paper #1206 (Laser Hardening of Gear Wheels)

    Laser Hardening of Gear Wheels
    Authors:
    Stanislav Nemecek, MATEX PM; Pilsen Czech Republic
    Tomas Muzik, MATEX PM; -
    Michal Misek, MATEX PM; -
    Presented at ICALEO 2012

    Laser hardening achieves higher heating and quenching rates than other surface hardening methods. High heating rate minimizes the risk of degradation of the underlying material. Self-quenching is based on removing the heat from the surface into the part's core by conduction, instead of the conventional cooling by water spray. Gear wheels, which tend to exhibit numerous cracks upon induction hardening, do not crack during laser hardening. In addition to the above-mentioned principles, this paper explai...

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  • ICALEO 2012 Paper #1301 (Laser Guided Double Tungsten Inert Gas Welding of Aluminium)

    Laser Guided Double Tungsten Inert Gas Welding of Aluminium
    Authors:
    Alexander Barroi, Laser Zentrum Hannover e.V.; Hannover Germany
    Ryan Knill, Laser Zentrum Hannover e.V.; -
    Jörg Hermsdorf, Laser Zentrum Hannover e.V.; Hannover Germany
    Stefan Kaierle, Laser Zentrum Hannover e.V.; Hannover Germany
    Ludger Overmeyer, Laser Zentrum Hannover e.V.; -
    Presented at ICALEO 2012

    TIG welding is a common industrially established process. Its main advantage is the weld quality. The drawback is the low process speed which leads to high heat affects, irreversibly destroyed material properties and work piece distortion. To overcome these process limits...

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  • ICALEO 2012 Paper #1302 (Development and Experimental Analysis of Laser-Assisted Plasma Arc Welding)

    Development and Experimental Analysis of Laser-Assisted Plasma Arc Welding
    Authors:
    Achim Mahrle, Institut für Oberflächen- und Fertigungstechnik IOF, Technische Univ. Dresden; Dresden Germany
    Michael Schnick, Institut für Oberflächen- und Fertigungstechnik IOF, Technische Univ. Dresden; Dresden Germany
    Sascha Rose, Institut für Oberflächen- und Fertigungstechnik IOF, Technische Univ. Dresden; Dresden Germany
    Thomas Pinder, Institut für Oberflächen- und Fertigungstechnik IOF, Technische Univ. Dresden; Dresden Germany
    Eckhard Beyer, Institut für Oberflächen- und Fertigungstechnik IOF, Technische Univ. Dresden, Fraunhofer IWS Dresden; Dresden Germany

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  • ICALEO 2012 Paper #1304 (A Comparative Study of Laser, CMT, Laser-Pulse MIG Hybrid and Laser-CMT Hybrid Welded Aluminium Alloy)

    A Comparative Study of Laser, CMT, Laser-Pulse MIG Hybrid and Laser-CMT Hybrid Welded Aluminium Alloy
    Authors:
    Chen Zhang, Wuhan National Laboratory for Optoelectronics, Huazhong Univ. of Science and Technology; Wuhan, Hubei Peoples Republic of China
    Ming Gao, Wuhan National Laboratory for Optoelectronics, Huazhong Univ. of Science and Technology; Wuhan, Hubei Peoples Republic of China
    Geng Li, Wuhan National Laboratory for Optoelectronics, Huazhong Univ. of Science and Technology; Wuhan, Hubei Peoples Republic of China
    Xiaoyan Zeng, Wuhan National Laboratory for Optoelectronics, Huazhong Univ. of Science and Technology; Wuhan, Hubei Peoples Republic of China
    Prese...

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  • ICALEO 2012 Paper #1306 (Fundamental Investigations and a System Technology for Laser-Assisted Milling of Titanium Alloys)

    Fundamental Investigations and a System Technology for Laser-Assisted Milling of Titanium Alloys
    Authors:
    Robert Wiedenmann, Technische Univ. Muenchen, Institute for Machine Tools and Industrial Management (iwb); Garching Germany
    Michael Zaeh, Technische Univ. Muenchen, Institute for Machine Tools and Industrial Management (iwb); Garching Germany
    Presented at ICALEO 2012

    Conventional steel materials are more and more substituted for advanced materials like titanium alloys for lightweight constructions and high-performance components. Especially in aerospace applications this trend is very distinctive. The newest generation of aircrafts consists of up to 20 % titanium alloys. Compar...

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  • ICALEO 2012 Paper #1402 (Zero-Gap Laser Welding of Zinc Coated Steels in a Lap Joint Configuration)

    Zero-Gap Laser Welding of Zinc Coated Steels in a Lap Joint Configuration
    Authors:
    Shanglu Yang, China Science Lab, General Motors Global R&D; Shanghai Peoples Republic of China
    Jeff Wang, China Science Lab, General Motors Global R&D; Shanghai Peoples Republic of China
    Blair Carlson, Manufacturing Systems Lab, General Motors Global R&D; -
    Jing Zhang, China Science Lab, General Motors Global R&D; -
    Presented at ICALEO 2012

    Zinc coated steels, which provide excellent corrosion resistance, are increasingly used in the automotive industry. Due to the lower boiling point of zinc (906°C) than the melting point of steel (over 1500°C), a highly-pressurized...

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  • ICALEO 2012 Paper #1403 (Investigation of the Keyhole in Laser Welding of Different Joint Geometries by Means of X-Ray Videography - Invited Presentation - 40 Minutes)

    Investigation of the Keyhole in Laser Welding of Different Joint Geometries by Means of X-Ray Videography - Invited Presentation - 40 Minutes
    Authors:
    Mikko Vänskä, Lappeenranta Univ. of Technology, Institut für Strahlwerkzeuge, Univ. of Stuttgart; Ostfildern-Nellingen Germany
    Felix Abt, Institut für Strahlwerkzeuge, Univ. of Stuttgart; Stuttgart Germany
    Rudolf Weber, Institut für Strahlwerkzeuge, Univ. of Stuttgart; Stuttgart Germany
    Antti Salminen, Lappeenranta Univ. of Technology, Machine Technology Center Turku Ltd; Lappeenranta Finland
    Thomas Graf, Institut für Strahlwerkzeuge, Univ. of Stuttgart; Stuttgart Germany
    Presented at ICALEO 2012

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  • ICALEO 2012 Paper #1404 (Development and Application of the 10 kW Fiber Laser Welding System)

    Development and Application of the 10 kW Fiber Laser Welding System
    Authors:
    Yosuke Yamazaki, Joining and Welding Research Institute, Osaka Univ.; Osaka Japan
    Akikazu Kitagawa, Hitachi Zosen Corporation; Osaka Japan
    Presented at ICALEO 2012

    The authors have developed laser welding technologies for about 20 years. Our practical application has been started for thin stainless steel products in 1999. In this study, we developed high power laser welding system for thick plate products. A 10kW fiber laser is used for this system. By using this system, we can fabricate thick plate products whose thicknesses are 15mm max. We applied this laser welding system for some parts of chemical pla...

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