A novel aluminum alloy electromagnetic flanging process based on the synergistic effect of repulsive and attractive forces
摘要
To address the poor attaching capability in electromagnetic flanging, a novel electromagnetic flanging process was proposed in this study based on the synergistic effect of repulsive and attractive forces. Numerical simulation and experiment were first conducted on electromagnetic flanging, then the validated numerical model was used to analyze the novel process. Finally the effect of different discharge sequences on the deformation of the plate was investigated. The results indicate that the established numerical model is reliable. The new process effectively avoids the shortcomings associated with electromagnetic flanging. By adjusting the discharge sequences, it was found that if the discharge sequence of the second coil was too early and the electromagnetic attraction would hinder the process. Once a portion of the plate had flowed into the die cavity after deformation, then energizing the second coil allowed the electromagnetic attraction to take effect, promoting further deformation of the plate.