The grains of oriented silicon steel are basically oriented in one direction, with a high silicon content, and are mainly used in transformer manufacturing. Non-oriented silicon steel has a chaotic gr

    Silicon steel sheet is essentially an extremely low carbon steel plate with a mass fraction of 0.5%~5% silicon. According to the use, silicon steel sheet can be divided into motor silicon steel sheet (the mass fraction of silicon is usually less than 2.5%, and the thickness is generally 0.5ram) and transformer silicon steel sheet (the mass fraction of silicon is usually 2.5%~4.5%, and the thickness is generally O.35mm); According to the working conditions, it can be divided into silicon steel sheets used in strong magnetic fields (mostly used in the power industry, which is the most common and largest amount) and silicon steel sheets used in weak magnetic fields (mostly used in the telecommunications industry), as well as silicon steel sheets used in power frequency and silicon steel sheets used in high frequency.In order to reduce the eddy current loss at high frequency, the thickness of O.1~0.2ram is usually used, and the thickness of the silicon steel sheet used in the pulse transformer can be as thin as 0.05mm.

Performance index of silicon steel sheet:

A. Low iron loss. The most important indicator of quality, all countries in the world are divided into grades by iron loss value, the lower the iron loss, the higher the grade, and the higher the quality.

B. High magnetic induction intensity. The silicon steel sheet that can obtain higher magnetic inductance under the same magnetic field is smaller in size and weight than the motor or transformer core made of it, which can save silicon steel sheets, copper wires and insulating materials relatively speaking. C. High stacking coefficient. The surface of the silicon steel sheet is smooth, flat and uniform, and the stacking coefficient of the manufacturing core is improved.

D. Good punching. This is even more important for the manufacture of small and micro motor cores.

E. The adhesion and welding of the surface to the insulating film are good.

F. Magnetic aging

G. Silicon steel sheet must be annealed and pickled before delivery.