30QK120 grain-oriented silicon steel

Performance Features

• Low Core Loss and High Magnetic Induction: It has low core loss and small energy loss in an alternating magnetic field, which can effectively reduce the power consumption of equipment such as transformers during operation and improve energy utilization efficiency. It also has a high magnetic induction intensity and can generate a strong magnetic induction under a certain magnetic field, enabling the iron core to obtain a higher magnetic flux density under a smaller magnetizing current and enhancing the working efficiency and power density of the equipment.

• Good Orientation: The crystal structure has an obvious preferred orientation along the rolling direction. The magnetic properties in this direction are optimized with high magnetic permeability, which can better meet the requirements of power equipment for the direction and intensity of the magnetic field.

• Stable Working Performance: It has stable working performance under high temperature and high frequency conditions, and also has relatively good wear resistance and corrosion resistance, and can adapt to different working environments.

Chemical Composition

The silicon content is usually around 3%. It also contains appropriate amounts of elements such as carbon, aluminum, manganese, and sulfur. Silicon can increase the resistivity of steel, reduce core loss and enhance magnetic permeability. Aluminum combines with nitrogen to form inhibitors to control grain growth and improve magnetic properties. The contents of carbon, manganese, sulfur and other elements need to be precisely controlled to ensure the comprehensive performance of the steel.

Production Process

It is smelted by an oxygen converter. The steel billet undergoes hot rolling, normalizing, cold rolling, intermediate annealing and secondary cold rolling successively to reach the finished thickness, and then goes through decarburization annealing and high-temperature annealing, and finally is coated with an insulating layer.