Just as in electrohydraulic forming, the electrical energy is first stored in a capacitor bank. This energy is then discharged through a coil by closing the switch. The coil produces a magnetic field, the intensity of this field depends on the value of the current. Since the metallic workpiece is in this magnetic field, a current is induced in the job which sets up its own magnetic field. The directions of these fields are such that the rigidly held coil repels the workpiece into the die. The workpiece obviously has to be electrically conductive but need not be magnetic. Short life of the coil is the major problem in such an operation.
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