These machines serve to hot deform the end, or a part, of a metal bar.\r\nWith this deformation, a pre-shaping is obtained, which allows subsequent hot forging process for screws and bolts.\r\nThe heating takes place throug the passing of a high current (Joule effect) and the deformation is caused by the axial thrust which determines the swelling of the areas that have attained a high temperature. The induction heat machines must therefore be able to deliver very high currents, and must also be able to develop substantial axial thrusts.\r\nMetals normally heatraceable:\r\n- Iron, steel\r\n- Stainless steel and related alloys\r\n- Brass\r\n- Titanium and its alloys\r\n- Nimonic alloys and other non-ferrous base materials