The magnetism of oriented silicon steel has strong directionality, and the iron loss value is the lowest, the magnetic permeability is the highest, and the magnetic inductance value is high under a certain magnetizing field. Oriented silicon steel has a silicon content of about 3% and requires a low oxide inclusion content in the steel, and must contain some kind of inhibitor (MnS, A1N).
Non-oriented silicon steel contains 0.8%-4.8% silicon ferrosilicon alloy, which is hotly and cold-rolled into silicon steel sheet with a thickness of less than 1mm. The addition of silicon increases the resistivity and maximum permeability of iron, reducing coercivity, core loss (iron loss) and magnetic aging.
Oriented silicon steel is smelted in an oxygen converter, and the billet is rolled into a finished product thickness by hot rolling, normalization, cold rolling, intermediate annealing and secondary cold rolling, then decarburized annealing and high temperature annealing, and finally coated with an insulating layer.
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