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Why do transformers use silicon steel sheets as cores?
2022-01-22
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Commonly used transformer cores are generally made of silicon steel sheets. Silicon steel is a kind of silicon (also called silicon) steel, with a silicon content of 0.8 to 4.8%. The core of the transformer is made of silicon steel because silicon steel itself is a magnetic substance with strong magnetic permeability. In the energized coil, it can produce a larger magnetic induction intensity, which can reduce the size of the transformer.
As the iron core of the transformer, a 0.35mm thick cold-rolled silicon steel sheet is generally selected, which is cut into long pieces according to the required iron core size, and then overlapped into a "Japanese" shape or a "口" shape. In principle, to reduce the eddy current, the thinner the thickness of the silicon steel sheet, the narrower the spliced sheet, and the better the effect.
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