Neodymium iron boron magnetic material product introduction
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Neodymium iron boron magnetic material product introduction Each type of product is divided into several grades according to the size of the maximum magnetic energy product. NdFeB magnetic material grades are: N35-N52,35M-50M,30H-48H,30SH-45SH,28UH-35UH,28EH -35EH. Example of grade: 048021 represents sintered NdFeB permanent magnet material with (BH)max of 366~398kj/m3 and Hcj of 800KA/m. The brand name of sintered NdFeB permanent magnetic material consists of three parts, the main name and 2 kinds of magnetic properties, the first part is the main name, which consists of the chemical symbol ND for neodymium, the chemical symbol FE for iron and the chemical symbol B for boron, the second part is the number in front of the line, which is the nominal value of the material's maximal magnetic energy product (BH) max (the unit is kj/m3), and the third part is the number behind the diagonal line, the magnetically polarized strength Coercivity value (unit is KA/m) of one-tenth, the value is rounded to the nearest whole number. Example of grade: NdFeb380/800 means sintered NdFeb permanent magnet material with (BH)max of 366~398kj/m3,Hcj of 800KA/MR. NdFeB surface treatment: 1, Phosphatization; 2, Inorganic salt passivation; 3, Electroplating; 4, Electrophoresis; 5, Vacuum deposition;