Process Model and Design for Magnetic Pulse Welding by Tube Expansion
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Date
2012-07-17
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Abstract
In this paper a design methodology for magnetic pulse welding processes is presented.
To examine fundamental correlations of part- and process-parameters, a model
experiment is used. Different impacting conditions are tested and the effect on the joint
quality is evaluated by metallographic analysis. Conclusions regarding suitable impacting
parameters are drawn. Electromagnetic expansion tests are carried out in parallel with the
aim of adjusting the impacting parameters via typical process parameters. Therefore, the
forming velocity is measured online and the impacting angle is varied via the geometry of
the joining zone. To verify that the tendencies observed in the model experiment occur
also in magnetic pulse welding, the influence of the impacting parameters on the joint
quality is investigated for magnetic pulse welded tubes, too. Finally, the results of both
investigation paths are combined and serve as a basis for target-oriented design of
magnetic pulse forming processes.
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Keywords
magnetic pulse welding, metallographic evaluation, model experiment