• ICALEO 2009 Paper #405 (Study on Welding of 2024 Aluminum Alloy Sheet with Disc Laser)

    Study on Welding of 2024 Aluminum Alloy Sheet with Disc Laser
    Authors:
    Xudong Zhao, Beijing University of Technology; Beijing Peoples Republic of China
    Rongshi Xiao, 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 fields of medical equipment manufacturing and aerospace engineering, aluminum alloys are widely applied to make the shells of the electronic devices. Laser welding is considered as a suitable technology to produce those components for the lower heat input and higher joint strength. In this paper, a 4.0kW disc laser was used to weld...

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  • ICALEO 2009 Paper #406 (Study on the Activating Flux Laser Welding of Titanium Alloy)

    Study on the Activating Flux Laser Welding of Titanium Alloy
    Authors:
    Chen li, BAMTRI; Beijing Peoples Republic of China
    Gong Shuili, BAMTRI; - Peoples Republic of China
    Duan Aiqin, BAMTRI; - Peoples Republic of China
    Presented at ICALEO 2009

    The CO2 laser welding was conducted to investigate the effect of activating flux on laser welding of TA15 titanium alloy with 2.5mm thickness in this paper, which originally developed to improve the penetration depth and reduce the weld porosity for TIG welding of titanium alloy. Results show that the activating flux can eliminate weld undercut defect, and increase the weld depth with the same laser welding parameters. It is also ...

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  • ICALEO 2009 Paper #407 (Laser Welding of Lap Joint Between Copper and Brass)

    Laser Welding of Lap Joint Between Copper and Brass
    Authors:
    Peng Dong, Beijing University of Technology; Beijing Peoples Republic of China
    Rongshi Xiao, Beijing University of Technology; Beijing Peoples Republic of China
    Presented at ICALEO 2009

    Copper and its alloys are widely applied in electronics industry, automotive industry refrigeration and air-conditioning industry et al., because of their excellent thermal conductivity. Traditionally, brazing and soldering are used to join them. However, those methods may bring some problems such as low efficiency and pollution. In this paper, a CW Nd:YAG laser with a output power of 2kW was used to weld lap joint between brass and copper...

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  • ICALEO 2009 Paper #408 (Laser Direct Joining of Ceramic and Engineering Plastic)

    Laser Direct Joining of Ceramic and Engineering Plastic
    Authors:
    Yousuke Kawahito, Jwri,Osaka University; Ibaraki Japan
    Yusuke Niwa, Jwri, Osaka University; Ibaraki, Osaka Japan
    Seiji Katayama, Jwri, Osaka University; Ibaraki, Osaka Japan
    Presented at ICALEO 2009

    Several materials such as metals, plastics and ceramics have been widely used in industrial applications of automobiles, aircrafts and electronic devices. Joining of these dissimilar materials is necessary and important from a manufacturing viewpoint. The joining is generally performed using adhesive bonds (glues) or mechanical tools such as bolts and rivets. However, these joining processes have some probl...

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  • ICALEO 2009 Paper #409 (Application of Pressure-Sensitive Adhesive Systems in Laser-Beam Welding of Lap Joints)

    Application of Pressure-Sensitive Adhesive Systems in Laser-Beam Welding of Lap Joints
    Authors:
    Uwe Reisgen, Rwth Aachen University, Isf; Aachen Germany
    Klaus Dilger, IFS, TU Braunschweig; - Germany
    Simon Olschok, Rwth Aachen University, Isf; Aachen Germany
    Nikolaus Wagner, Rwth Aachen University, Isf; Aachen Germany
    Presented at ICALEO 2009

    This paper deals with a novel hybrid technology which has been developed by the institutes ISF, Aachen and IFS, Braunschweig. Using this method, the joining partners have been preassembled by means of pressure sensitive adhesive and subsequently laser-beam welded on lap joint. This innovative technology promises a redu...

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  • ICALEO 2009 Paper #502 (Laser Beam Hardening - Energy Efficient Heat Treatment?)

    Laser Beam Hardening - Energy Efficient Heat Treatment?
    Authors:
    Steffen Bonss, Fraunhofer IWS; Dresden Germany
    Marko Seifert, Fraunhofer IWS; Dresden Germany
    Berndt Brenner, Fraunhofer Iws; Dresden Germany
    Eckhard Beyer, Fraunhofer Iws; Dresden Germany
    Presented at ICALEO 2009

    Laser beam hardening has been established during the last years as a complementary technology for local heat treatment tasks at tool manufacturing and automotive industry. Especially new high power diode lasers and a lot of process supporting systems, what have been developed in recent years, are responsible for the increase of industrial laser hardening applications. In the context...

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  • ICALEO 2009 Paper #503 (Investigations on Interface Debonding of the Particle Reinforced Metal Matrix Composites in Laser Forming)

    Investigations on Interface Debonding of the Particle Reinforced Metal Matrix Composites in Laser Forming
    Authors:
    Furong Liu, Beijing University of Technology; Beijing Peoples Republic of China
    K.C. Chan, The Hong Kong Polytechnic University; Hong Kong Hong Kong
    C.Y. Tang, The Hong Kong Polytechni University; Hong Kong Hong Kong
    J.M. Chen, Beijing University of Technology; Beijing Peoples Republic of China
    Presented at ICALEO 2009

    Laser forming is a promising technology to deform the work pieces by thermal stress caused by laser irradiations. Up to date, considerable investigations have been carried out to clarify the process, however, much attention has ...

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  • ICALEO 2009 Paper #504 (3D Laser Forming Through Circle Line Heating)

    3D Laser Forming Through Circle Line Heating
    Authors:
    K. Venkadeshwaran, School of Laser Science and Engineering; Jadavpur WA India
    Sandip Das, School of Laser Science and Engineering; Jadavpur India
    Dipten Misra, School of Laser Science and Engineering; Jadavpur India
    Presented at ICALEO 2009

    Metal forming by a moving heat source is a proven method for forming a sheet metal into desired shape. Line heating in straight line path is sufficient to form shapes with single curvature. However, to form spatially curved or doubly curved surfaces, it is more convenient to apply circle line heating. A single pass of circle line heating at a stretch for full circle over the plat...

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  • ICALEO 2009 Paper #505 (Research and Development of Laser Additive Manufacturing in Northwestern Polytechnical University)

    Research and Development of Laser Additive Manufacturing in Northwestern Polytechnical University
    Authors:
    Weidong Huang, Northwestern Polytechnical University; Xian Peoples Republic of China
    Presented at ICALEO 2009

    Research of Laser Additive Manufacturing (LAM) began at 1995 at the State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, China. The emphasis has been focused on obtaining excellent mechanical properties for LAMed metal parts through careful control of the material microstructures. The materials of LAMed parts include alloys of titanium, superalloys, and stainlessness steel. The mechanical properties of LAMed samples are usually in the classes of...

    $28.00

  • ICALEO 2009 Paper #506 (Transition Metal Coatings on Graphite Via Laser Processing)

    Transition Metal Coatings on Graphite Via Laser Processing
    Authors:
    Deepak Rajput, Univ. of Tenn. Space Institute; Tullahoma TN USA
    Lino Costa, University of Tennessee Space Institute; Tullahoma TN USA
    Kathleen Lansford, University of Tennessee Space Institute; Tullahoma TN USA
    Alexander Terekhov, -; -
    George Murray, University of Tennessee Space Institute; Tullahoma TN USA
    William Hofmeister, University of Tennessee Space Institute; Tullahoma TN USA
    Presented at ICALEO 2009

    Graphite is a potential high temperature structural material due to its low specific gravity and high strength along with exceptional chemical and physicomec...

    $28.00

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