According to the classification of production process, it can be divided into two types: hot rolling and cold rolling. It can be divided into two types: no grain orientation and grain orientation: cold rolled sheet has uniform thickness, good surface quality and high magnetic properties. Therefore, with industrial development, heat The slab has a tendency to be replaced by cold rolled sheets.
Cold rolled silicon steel sheet
The cold-rolled silicon steel sheet is divided into two types of steel strips: no orientation and grain orientation.
The grain-oriented cold-rolled strip is usually used as a core of a motor or a welding transformer; the grain-oriented cold-rolled strip is used as a core of a power transformer, a pulse transformer, and a magnetic amplifier. The cold-rolled oriented thin silicon steel strip is made of a 0.30 or 0.35 mm thick oriented silicon steel strip which is pickled, cold rolled and annealed.
The cold-rolled non-oriented silicon steel sheet is obtained by hot rolling a billet or a continuous casting billet into a coil having a thickness of about 2.3 mm. The cold-rolled electrical steel strip has the characteristics of flat surface, uniform thickness, high stacking coefficient and good punching property, and has higher magnetic induction and lower iron loss than hot-rolled electrical steel.
Using a cold belt instead of a hot rolled strip to make a motor or transformer, the weight and volume can be reduced by 0%-25%. If the cold-rolled orientation belt is used, the performance is better, and it can be used to replace the hot-rolled strip or the low-grade cold-rolled strip, which can reduce the electric energy consumption of the transformer by 45%-50%, and the working performance of the transformer is more reliable.