Main features of silicon steel sheet
There are two kinds of silicon steel sheet, oriented silicon steel and non oriented silicon steel. Oriented silicon steel is mainly used for transformers and so on. The price is higher. The non oriented silicon steel is a kind of motor, and there is a big difference between different steel mills. The quality of silicon steel sheet mainly depends on iron loss and coating!
The silicon steel sheet generally increases with the increase of silicon content, decreases the iron loss, the film and magnetic properties, and increases the hardness (Figure 3). The higher the working frequency, the greater the eddy current loss, the thinner the silicon steel sheet should be.
The main requirements of silicon steel are: (1) low iron loss; this is the most important index of quality of silicon steel sheet. Each country divides the grade according to the iron loss value, the iron loss is lower, the grade is higher. The magnetic induction intensity (magnetic induction) is high under a strong magnetic field, which reduces the volume and weight of the iron core of the motor and transformer, and saves silicon steel sheets, copper wires and insulating materials. The surface is smooth, smooth and uniform in thickness, and the filling coefficient of the iron core can be increased. Good punching quality, more important for the manufacture of micro and small motors. The adhesion and weldability of the surface insulation film are good, and it can prevent erosion and improve the punching quality. The basic magnetic aging.
