Abstract
This paper describes a new seam welding technique and its experimental results. When an impulse current from a capacitor bank passes through a flat one-turn coil, a high-density magnetic flux is suddenly generated in the coil. Eddy currents are induced inside the overlapped ends of Al-Cu sheets (thickness 0.5 mm) placed in the coil. The ends can be joined both by the Joule heat generated in them and by the magnetic pressure applied onto them. A bank energy required for seam welding an area 5 mm×100 mm is less than 3 kJ.
