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Amorphous magnetic ring with ferrite core

by:Transmart     2020-05-13
Amorphous material is amorphous magnetic ring, magnetic components processing. Depending on the amorphous strip material is different, can be divided into the iron base amorphous, cobalt-based amorphous and so on. According to the shape of the material, can be divided into strip type copper and copper powder type. Amorphous magnetic ring characteristics of saturation flux density is much higher than ordinary ferrite magnetic core with powder, but with increasing frequency, magnetic permeability will soon fall, commonly used in dozens to hundreds of K K band. Amorphous magnetic ring, glass or metal, it is appeared in the 1970 s a new type of material, is the use of rapid cooling technology, the liquid steel a molding for thickness of 30 microns thin belt, get solid alloy ( Thin tape) Is different from cold-rolled silicon steel material atoms in the crystal structure of regularly arranged, it is this alloy its atoms in a random permutation of the amorphous structure, make its have narrow B - H circuit, has the characteristics of high magnetic conductivity and low loss; At the same time, the atomic arrangement in the amorphous alloy is irregular limits the free passage of electronic lead to resistivity 2 - higher than crystal alloy Three times, this also is helpful to reduce the eddy current loss. For amorphous alloy transformer core made of raw material, the no-load loss compared with the traditional transformer of silicon steel sheet, reduced about 75%, the amorphous alloy transformer has very obvious energy saving and environmental protection effect. Ferrite core is mainly composed of iron ( Fe) , manganese, Mn) , and zinc ( 锌) Three kinds of metal elements, commonly referred to as manganese zinc ferrite. Ring ferrite core with no air gap, and the cross-sectional area is consistent, so the magnetic effect is very high. Ferrite beads have so many sizes, depending on the copper material, to choose from, and simplify the winding can use different coating and improve the breakdown voltage. Ferrite core is composed of dense homogeneous nonmetallic magnetic materials, ceramic structure with low coercive force ( Magnetic material after the saturation magnetization, when the external magnetic field back to zero by magnetic induction intensity B does not return to zero, only in the opposite direction of the original magnetic field and magnetic field of a given size to make the magnetic induction intensity back to zero, the magnetic field is called the coercive field) , also called soft magnetic ferrite. It is composed of ferric oxide ( Fe2O3) And one or more other metals ( Such as manganese, zinc, nickel, magnesium) The oxide or carbonate compounds. Ferrite materials by pressing, after 1300 ℃ high temperature sintering, and then made by machine meet the application requirements of magnetic core of finished product, compared with other types of magnetic materials, ferrite has the advantage of high permeability, and in general frequency range with high resistance and the advantages of the eddy current loss is small.
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