Cold-rolled grain-oriented silicon steel has low iron loss, which is the most important indicator of the quality of silicon steel sheet. Countries will classify the iron loss value according to the iron loss value. The lower the iron loss, the higher the grade. Cold-rolled grain-oriented silicon steel has a high magnetic induction (magnetic induction) under a strong magnetic field, which reduces the volume and weight of the core of the motor and the transformer, and saves silicon steel sheets, copper wires and insulating materials.
The surface of cold-rolled grain-oriented silicon steel is very smooth, flat and uniform in thickness, which can improve the filling factor of the core. Good punching is more important for the manufacture of miniature and small motors. The surface insulating film has good adhesion and weldability, and can be used for corrosion prevention and improvement of punching property.
Pickling of EI cold rolled grain oriented silicon steel
The oxide of the hot rolled steel strip is removed by a descaler and a hydrochloric acid tank to prevent defects on the surface of the cold rolled product.
Cold stamping In order to ensure the thickness and material of different applications, the deceleration ratio is set at 40%-90%, and advanced control equipment such as automatic thickness control and automatic shape control is realized.