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How to choose and ndfeb magnet ndfeb manufacturers tell you?

by:Newland     2020-05-04
Ndfeb magnet is now widely used in electronic industry, automobile industry, petrochemical industry, micro motors, permanent magnet instrument, nuclear magnetic resonance (NMR) devices, sensors, audio equipment, magnetic suspension system, magnetic transmission mechanism and protection equipment, etc. Because ndfeb permanent magnets have excellent performance, abundant raw material and reasonable price moderate, it promote the ndfeb magnet is widely used and popularized rapidly. Then we ndfeb magnet when the choose and buy should pay attention to what? How to judge the stand or fall of ndfeb magnet? Ndfeb manufacturers to look at the below: first of all let us know the ndfeb, what material is it made of? The main raw materials ndfeb permanent magnets have rare earth metal neodymium ( Nd) 32%, iron metal elements ( Fe) 64% boron and nonmetallic elements ( B) 1% ( A small amount of added dysprosium ( Dy) , terbium ( Tb) , cobalt, Co) , niobium, Nb) , gallium, Ga) , aluminum ( Al) , copper, Cu) Elements such as) 。 Ndfeb permanent magnetic material based on Nd2Fe14B ternary compound as matrix, its content should be close to compound Nd2Fe14B formula is. But according to Nd2Fe14B composition ratio in full, magnets, magnetic can is very low, even no magnetic. Only actual of neodymium magnets and boron content than Nd2Fe14B compounds and neodymium boron content to get better performance of permanent magnet. Summary of quality determines the quality and value of ndfeb magnets, from the above summary of the main raw materials, the ndfeb belongs to a kind of magnetic material, its performance is extremely high, moderate price, and the intensity is high, but it is not resistant to high temperature and corrosion. Because ndfeb material combination is very reasonable, so the ndfeb magnetic lasting, eternal. Ndfeb magnet has the quite high coercive force, magnetic field and the natural environment in general will not appear under the condition of magnetic loss or loss of the change of the magnetic. After long-term use, the loss of magnetic should not be too big, so it is in use in the process of time factor's influence on the magnetic generally ignored. With such high magnetic ndfeb magnet, make its application more and more widely, and ndfeb magnet manufacturers also more and more. So now that we know the ndfeb magnet has the performance, we can be used to identify the stand or fall of ndfeb magnets, thus carries on the reasonable choose and buy! Ndfeb manufacturers will use some of ndfeb magnetic iron products for testing, if the material of ndfeb is better, so it will be very big, magnetic nature of the attraction of the magnet will be very big, from which we can determine whether there is the ndfeb magnet to cut corners. If we are on a large scale of ndfeb magnets of choose and buy, you can pass the test of its magnetic to judge good or bad. Ndfeb magnet is mainly has three parameters: remanence Br ( 剩余感应) Gauss, units, and removed from saturated magnetic field, after the rest of the magnetic flux density, on behalf of the foreign can provide the magnet magnetic field strength; Coercive force Hc ( 矫顽力) Oersteds, unit, is to put the magnets in a reverse adscititious magnetic field, when applied magnetic field increases to a certain intensity magnet magnetic disappears, the resistance and the ability of the magnetic field is called the coercive force, represents a measure of resistance to demagnetization ability; Gauss - magnetic energy product BHmax, units Oersteds, is material produced by the magnetic energy per unit volume, how much is the magnet can store energy of a physical quantity. We can to standard check of these three values, which can be learned that ndfeb magnet quality high and low. When the choose and buy of ndfeb magnets, we are manufacturer of ndfeb through professional test equipment for testing. Sometimes some equipment performance requirements for ndfeb magnet is very high, you will need to improve the quality of ndfeb magnets, nature should notice when the choose and buy these problems.
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