The grains of oriented silicon steel are basically in one direction, and the silicon content is relatively high. It is mainly used in the manufacture of transformers. Non-oriented silicon steel has disordered grain distribution and low silicon content, and is mainly used in motor manufacturing. The silicon content is generally bounded by 3%; cold-rolled silicon steel is divided into cold-rolled non-oriented silicon steel and cold-rolled oriented silicon steel.
1. The production process requirements of cold-rolled non-oriented silicon steel are relatively low, and the silicon mass fraction is between 0.5% and 3.0%. The thickness of the finished product after cold rolling is generally 0.35 and 0.5mm thick strips. Its Bs is higher than that of oriented silicon steel, the thickness is uniform, the dimensional accuracy is high, the surface is smooth and flat, and the filling factor and the magnetic properties of the material are improved.
2. The mass fraction of silicon in cold-rolled grain-oriented silicon steel is above 3.0%, and the mass fraction of carbon is 0.03%-0.05%. Steels have low levels of oxide inclusions and require inhibitors. Compared with cold-rolled non-oriented silicon steel, oriented silicon steel has lower loss, strong magnetic directionality, and superior high permeability and low loss characteristics in its rolling direction. Cold-rolled grain-oriented silicon steel, also known as cold-rolled transformer silicon steel, is mainly used in transformer manufacturing.
3.Cold-rolled grain-oriented silicon steel can also be divided into two types: ordinary grain-oriented silicon steel (CGO) and high magnetic induction grain-oriented silicon steel (Hi-B). The high magnetic induction cold-rolled grain-oriented silicon steels are all single-oriented steel strips, which are mainly used for the manufacture of various types of choke coils, transformers and other electromagnetic components in electronic instruments.
