Oriented electrical steel, also known as cold-rolled grain-oriented silicon steel. Cold-rolled oriented silicon steel refers to cold-rolled electrical steel containing 2.9% to 3.5% Si, and the crystal structure of the steel plate has a certain pattern and direction.
Electrical steel has a history of hundreds of years. Electrical steel includes two types: electrical steel with Si <0.5% and silicon steel with Si content of 0.5~6.5%. It is mainly used as the core of various motors, transformers and ballasts. It is an important part of electric power, electronics and An important soft magnetic alloy that is indispensable in the military industry. Electrical steel is the largest used magnetic material and is also an important energy-saving metal functional material. The manufacturing process and equipment of electrical steel, especially oriented silicon steel, are complex, the composition is strictly controlled, the manufacturing process is long, and there are many factors that affect performance. Therefore, the quality of oriented silicon steel products is often regarded as an important indicator of a country's special steel manufacturing technology level. , and won the reputation of "art product" among special steels.
Grain-oriented silicon steel: Grain-oriented silicon steel, also known as cold-rolled transformer steel, is an important ferrosilicon alloy used in the transformer (core) manufacturing industry.
Grain-oriented silicon steel: The magnetism of grain-oriented silicon steel has strong directionality, with the lowest iron loss value in the rolling direction, the highest magnetic permeability and high magnetic induction value under a certain magnetizing field. The silicon content of oriented silicon steel is about 3%, and the steel is required to have low oxide inclusion content and must contain some kind of inhibitor (MnS, A1N).
Grain-oriented silicon steel: Grain-oriented silicon steel is smelted in an oxygen converter. The billet undergoes hot rolling, normalization, cold rolling, intermediate annealing and secondary cold rolling to the finished thickness, and then undergoes decarburization annealing and high-temperature annealing, and is finally coated with an insulating layer.
