Electropermanent chucks

Proexportplus offer electropermanent systems made by Walmag company, which are the combination of permanent and electromagnetic technology. They exploit the ability of some ferromagnetic materials to become a permanent magnet due to the fast action of strong direct current. In this state, they continue to function without the need of an external power supply. When demagnetizing, impulses create an alternating current which demagnetizes the ferromagnetic materials.