Abstract
Electromagnetic forming (EMF) is a high-speed forming technology that uses electromagnetic forces to deform materials. In this process, the capacitor bank stores energy and it is discharged through the coil; here small part of stored energy is utilized, and the remaining part is wasted through losses. The current loss is significant. It can be in the form of loss in coil, die, fixtures, etc. It has been observed that the range of efficiency of the EMF process varies between 10 and 40%. Therefore, the present work explores into reducing the losses by using a suitable die material to improve the efficiency of the EMF process. Here, the effect of die material on the deformation of Al tube is studied. For this study, two die of same geometry and different materials, namely nylon and steel, are used. It is observed that the effect of die material plays important role in the EMF process. Almost 5% increase in deformation is observed with nylon die compared to steel die at the same discharge energy. The FE based simulations are carried out and results are validated experimentally with 94% agreement.
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