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Neodymium iron permanent magnetic material came out in the early 80s. It is widely used in information industry, national defense industry, automobile industry, wind power generation, household appliances, instruments, medical equipment and magnetic equipment and other fields. The main component of the magnet is Nd2Fe14B, which has extremely high magnetic properties. Its maximum magnetic energy product (BH) max is more than 10 times higher than Ferrite, and the maximum working temperature can reach 250 ℃; the mechanical properties are also quite good, which can be suitable for different processing methods such as grinding, wire cutting and drilling; due to the poor corrosion resistance, the surface must be coated differently according to different requirements. (such as Zn, Ni, Au, epoxy, etc.)
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