Abstract
This paper describes a new foil welding technique and its experimental results. When an impulse current from a capacitor bank passes through a flat one-turn coil, a magnetic flux is suddenly generated in the coil. Eddy currents are induced in two insulated metal plates and overlapped copper foils (10μm in thickness) between the plates placed in the coil. The foils can be welded both by the magnetic pressure applied onto them and by Joule heat generated in them. The bank energy required for welding of 20mm in length is less than 2kJ.
