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Powerful magnet what kind? _ ndfeb strong magnet manufacturers

by:Newland     2020-03-31
Many different kinds of powerful magnets, generally divided into two types: permanent magnetic and soft magnetic, what we call the magnets, generally refers to the permanent magnet permanent magnet divides two categories: the first major categories are: metal alloy including magnet ndfeb magnets Nd2Fe14B) , samarium cobalt magnet ( SmCo) , aluminum nickel and cobalt magnet ( ALNiCO) The second major categories are: ferrite permanent magnet material ( Ferrite) Commercialization of 1, ndfeb magnet, it is found that the highest performance magnets, known as magnetic king, has the extremely high magnetic to its maximum magnetic energy product ( BHmax) Above ferrite ( Ferrite) More than 10 times. Machining properties of its itself is also quite good. Working temperature up to 200 ℃. And the quality of a material is solid, stable performance, good cost performance, so its application is very extensive. But because of its chemical activity is very strong, so you have to handle with polish on the surface layer. ( Such as zinc plating, Ni, electrophoresis, passivation, etc. ) 。 2. Ferrite magnets: it is the main raw material includes BaFe12O19 and SrFe12O19. Manufactured by ceramic technology, the quality of a material is hard, brittle material, because of the ferrite magnets have good temperature resistance, low cost, moderate performance, has become the most widely applied permanent magnets. 3. Alnico magnets, is made from aluminum, nickel, cobalt, iron and other trace metal elements constitute a kind of alloy. Casting process can be processed into different sizes and shapes, machinability is good. Casting aluminum nickel and cobalt permanent magnet has the lowest temperature coefficient is reversible, working temperature can be as high as above 600 ℃. Alnico permanent magnet products are widely used in all kinds of instruments and meters and other application fields. 4, samarium cobalt ( SmCo) According to the composition of different divided into SmCo5 and Sm2Co17. Because its material is expensive and make its development was restricted. Samarium cobalt ( SmCo) As a rare earth permanent magnets, not only have higher magnetic energy product ( 14 - 28 mgoe) And reliable coercive force and good temperature characteristic. Compared with the ndfeb magnets, samarium cobalt magnet is more suitable for working in high temperature environment.
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