Magnetic Pulse Spot Welding: Application to Al/Fe Joining
Loading...
Date
2014
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Magnetic pulse welding is a rapid process (takes place within few micro seconds) that
joins both homogeneous and heterogeneous materials in the solid state. The process
involves applying variable high current on an inductor to generate Lorentz forces on to the
conductive primary part (flyer). To realize the weld it is necessary to accelerate the flyer to
impact on to the secondary stationary part (base material) at a very high velocity attained
over the distance, called air gap, between the parts. It is typically possible to perform
welding of tubes and sheets provided there is an optimized air gap between the parts to
be welded. As part of our work we have developed an innovative approach (Magnetic
Pulse Spot Welding-MPSW) that eliminates the delicate task of maintaining the
aforementioned air gap between the plates. The proposed method opens better viable
perspectives for heterogeneous assembly of automotive structures or connecting batteries
in a quasi-cold state. The developed approach has been validated on the heterogeneous
assembly Al/Fe by tensile tests (quasi-static and dynamic) that attested the quality of
welds.
Description
Table of contents
Keywords
Welding, Dissimilar Al/Fe joining, Magnetic pulse spot welding