The requirements for the performance of silicon steel are mainly:
① iron loss, which is the most important index of the quality of silicon. Each country is divided according to the iron loss value, the lower the iron loss, the higher the grade.
② strong magnetic induction (magnetic susceptibility) high, which makes the motor and transformer core volume and weight reduction, saving silicon steel, copper wire and insulating materials.
③ surface smooth, flat and uniform thickness, can improve the filling coefficient of iron core.
④ has good punching film, and it is more important to make miniature and small motor.
⑤ Surface insulating film has good adhesion and weldability, and can resist corrosion and improve punching performance.
⑥ Basic No magnetic aging.