Iron Core

     Grain-oriented silicon steel

         Grain-oriented silicon steel is a kind of silicon-iron alloy with preferred grain orientation formed by deformation and recrystallization annealing. It contains approximately 3% silicon and has an extremely low carbon content. Manufactured as cold-rolled sheets and strips, it is available in nominal thicknesses of 0.18, 0.23, 0.28, 0.30 and 0.35 mm.  As a soft magnetic material, it is mainly used to manufacture various transformers, fluorescent lamp ballasts and stator cores of turbo generators.

When grain-oriented silicon steel serving as a magnetic medium is magnetized under alternating current operating conditions, part of energy is converted into heat loss during electromagnetic conversion, and such dissipated energy is defined as core loss.