Speaker
Description
Electromagnetic pulse welding (EPW) is an effective way to realize the connection of two different kinds of metal materials via pulsed electromagnetic forces. To improve the welding performance, a new EPW process with a dual-stage coil system was proposed for joining aluminum and steel sheets in this paper, in which one coil is used to generate a pulsed magnetic field with a short pulse width for inducing an eddy current in the aluminum sheet, while the other one is applied to generate a background magnetic field with a relatively long pulse width for increasing electromagnetic force acting on the aluminum sheet. The EPW system has been designed and implemented based on the simulation results using the finite element method, with considering the effects of the coil shape, the number of coil turns and the discharge parameters. Finally, experiments are carried out to validate the feasibility of the EPW system, and the microstructure observations of the interfaces show that the welding quality can be effectively improved.
| Submitters Country | China |
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