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Welding Processes

  • Friction spot joining

    Recently, an innovatie spot weldin technique has appeared on the market, that use frictional heat to create a joint. Friction spot welding is performed by plunging a rotating tool in the sheets to be welded, which are placed in the overlap configuration. The connection is generated by means of frictional heat and mechanical work. The result is a spot welded lap connection, with minimal material loss and a flat surface with no keyhole.

  • Friction welding

    Friction welding is now well established as one of the most economical and highly productive methods in joining similar and dissimilar metals. It is widely used in automotive and aerospace industrial applications. Friction welding is often the only viable alternative in this field to overcome the difficulties encountered in joining the materials with widely varying physical characteristics.
    This process employs a machine that is designed to convert mechanical energy into heat at the joint to weld using relative movement between workpieces, without the use of electrical energy or heat from other sources.

  • Electromagnetic pulse crimping

    High-velocity electromagnetic deformation and welding processes (also know as magnetic pulse forming and welding) are highly innovative automatic production techniques. These processes are based on the same working principle, more specific the use of electromagnetically induced forces to deform, crimp and/or weld workpieces. The electromagnetic pulse joining processes have remarkable advantages compared to the conventional joining processes. The possibilities of the technology is illustrated with some examples.

  • Weldability of micro-alloyed high-strength pipeline steels using a new friction welding variant

    An innovative welding method for fully automatic joining of pipelines has been developed. The proposed welding procedure is a variant of the conventional friction welding process. A rotating intermediate ring is used to generate heat necessary to realise the weld. The working principles of the welding process are described. The weldability of the micro-alloyed high-strength pipeline steel API-5L X65 is experimentally investigated. It was found that the new welding process is suitable for joining this material. When welding with a sufficiently low heat input, a high weld quality is obtained. Under these circumstances the weld strength, ductility and impact toughness are high and fulfil the requirements of the commonly used standard EN 12732 for joining pipes.

  • InnoJoin - Summary of project results

    SUMMARY REPORT of the research project "Development and evaluation of advanced welding technologies for multi-material design with dissimilar sheet metals"

    Acronym : InnoJoin

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