The combination of laser beam welding with another weld process is referred to as a 'hybrid' welding process. This means that a laser beam and an arc act simultaneously in one welding zone, and influence and support one another. An objective of the studies was to learn how far the process characteristics could lead to enhanced welding possibilities. One typical field for applying the CO2-laser/gas metal arc welding (GMAW) hybrid process is shipbuilding. The possibilities in this field are demonstrated and discussed in this article. Laser/GMA welding is a wholly new technology that offers synergies for wide fields of application in shipbuilding, especially where it is not possible or financially viable to achieve the component tolerances that are required for laser beam welding. The much wider range of application and the high capability of the combined process can lead to enhanced competitiveness in terms of reduced investment outlays, shorter fabrication times, lower manufacturing costs, and higher productivity. The big advantage of laser hybrid welding is the lower distortion and reduced rework after welding. The present investigation shows the applicability of high power CO2, YAG, or fiber laser/GMAW laser hybrid process for welding different plate thicknesses. The advantages of hybrid welding - the good gap bridging ability and the low energy per unit length - are discussed. Compared to welding with the laser with welding wire process, the laser hybrid process increases the welding speed up to two times. The maximum gap bridging ability with the laser hybrid welding process is up to 1 mm, with a material thickness up to 15 mm.


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    Title :

    Laser hybrid welding of ships


    Contributors:

    Published in:

    Publication date :

    2004


    Size :

    5 Seiten, 6 Bilder, 5 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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