Abstract
Radial distribution of a magnetic flux density between a coil and an aluminum plate with a hole is measured and forming conditions on bore flanging of an aluminum plate by an electromagnetic forming is investigated experimentally. The magnetic flux density is not uniform along radial direction of the coil. The charging voltage, the length of flanging part and the corner radius of a die have a large effect on the bore flanging process. When the length of flanging part is short, the bore flanging above 90^0 can be easily obtained.
