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What is an amorphous magnetic ring?

by:Catech      2023-04-21

Amorphous magnetic ring is a magnetic element processed with amorphous material. According to the material of the amorphous strip used, it can be divided into iron-based amorphous, cobalt-based amorphous and so on. According to the shape of the material, it can be divided into strip type magnetic ring and powder type magnetic ring. The saturation magnetic density of amorphous is much higher than that of ordinary ferrite and powder cores, but as the frequency increases, the magnetic permeability will decrease quickly, and it is generally used in the frequency band of tens of K to hundreds of K.

Amorphous alloy, or metallic glass, is a new type of material that came out in the 1970s. It is a solid alloy (thin strip) obtained by forming molten steel into a thin strip with a thickness of 30 microns by using rapid cooling technology. It is different from the crystalline structure in which atoms are arranged regularly in cold-rolled silicon steel materials. It is this alloy whose atoms are in an amorphous structure in which the atoms are arranged randomly, so that it has a narrow B-H circuit and has the characteristics of high magnetic permeability and low loss; at the same time The irregular atomic arrangement of amorphous alloys restricts the free passage of electrons, resulting in a resistivity 2-3 times higher than that of crystal alloys, which is also conducive to reducing eddy current losses. Compared with the traditional transformer using silicon steel sheets, the no-load loss of the transformer core made of amorphous alloy is reduced by about 75%, so that the amorphous alloy transformer has a very significant energy-saving and environmental protection effect. When the amorphous alloy When the transformer core is used in an oil-immersed transformer, it can significantly reduce the emission of various harmful gases. Therefore, more and more manufacturers use amorphous alloys as raw materials for transformer cores.

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