It is understood that oriented silicon steel is the main material of the transformer core, which can produce a strong magnetic field under a certain excitation magnetomotive force and is the magnetic circuit of the transformer. High grade oriented silicon steel has the characteristics of high magnetic induction and low iron loss.

Silicon steel is divided into oriented silicon steel and non-oriented silicon steel. Oriented silicon steel is mainly used in the manufacture of transformers, relays, rectifiers, etc. It is also divided into general oriented silicon steel and high magnetic induction-oriented silicon steel, both of which can be used as the core of the transformer, but high magnetic induction-oriented silicon steel can reduce the loss of electric energy, belonging to the high-end products.

According to the General Administration of Customs data show that in November 2023, China's non-oriented silicon steel exports totaled 64,500 tons, an increase of 54.21%, and the cumulative exports from January to November were 675,200 tons, down 14.21% year-on-year.

By comparing the measurement results of magnetic properties of GT100 ultra-thin oriented silicon steel and 23QG100 oriented silicon steel under different operating conditions, conclusions and selection suggestions can be drawn.

In order to accurately predict the core loss of the motor, it is very important to analyze the deterioration degree and mechanism of non-oriented steel plate caused by laser cutting. Zhang Changgeng et al. from Hebei University of Technology calculated and compared the deterioration zone of non-oriented electrical steel plate caused by laser cutting through a local magnetic characteristics test system.

In 2020, China's automotive motor iron core market size reached 175.83 million US dollars, and is expected to reach 678.83 million US dollars in 2027, with a compound annual growth rate (CAGR) of 17.32%. Overall, China's automotive motor iron core industry is a rising industry, because its downstream electric vehicles are expected to grow faster, we are expected to usher in greater growth in the future automotive motor iron core industry.

To achieve the goal of "double carbon", "open source" and "throttling" need to be two-pronged. Open source, that is, increase the proportion of new energy represented by photoelectric and wind power in the power structure.

A new furnace type is innovatively proposed, which can meet the process requirements of heating rate ≥30℃/s, cooling rate ≤10℃/s, hydrogen ratio in the furnace 90%, and hydrogen flow in the cooling section, and can stably produce a full range of silicon steel products for electric vehicles.