Improvement method for coercive force of neodymium iron boron magnet
A neodymium-iron-boron and coercive force technology, applied in the field of neodymium-iron-boron magnet processing, can solve the problems of high cost and affect performance, and achieve the effects of low cost, fast film forming speed and high utilization rate
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Embodiment 1
[0019] Example 1, 1) Place multiple NdFeB magnet flakes with a size of 20*20*2T in an argon protection chamber, and evenly sprinkle dysprosium powder with an average particle size of 2 microns on the surface of the NdFeB magnet flakes , the weight of dysprosium powder is 0.3% of the weight of the NdFeB magnet, and then the NdFeB magnet sheet sprinkled with Dy powder is moved to the halogen-tungsten lamp, and the halogen-tungsten lamp is turned on to rapidly heat the surface of the NdFeB magnet sheet, so that Dysprosium powder quickly forms a film on the surface of the NdFeB magnet and solidifies and adheres to the surface of the NdFeB magnet sheet; after cooling, turn the NdFeB magnet sheet over and sprinkle the dysprosium powder on the other side. The weight of the dysprosium powder is the magnet 0.3% of the weight, and then use the same lamp irradiation method to heat the surface of the NdFeB magnet sheet, so that the dysprosium powder quickly forms a film on the surface of t...
Embodiment 2
[0025] Example 2, 1) Place multiple NdFeB magnet sheets with a size of 20*20*2T in an argon chamber, and evenly sprinkle terbium powder with an average particle size of 300 microns on the surface of the NdFeB magnet sheets, and the terbium The weight of the powder is 0.3% of the weight of the NdFeB magnet, and then the NdFeB magnet sheet sprinkled with terbium powder is moved under the tungsten-halogen lamp, and the tungsten-halogen lamp is turned on to rapidly heat the surface of the NdFeB magnet, so that the terbium powder quickly Form a film on the surface of the NdFeB magnet and solidify and adhere to the surface of the NdFeB magnet sheet. After cooling, turn the NdFeB magnet sheet over and sprinkle terbium powder on the other side. The weight of the terbium powder is 0.3 of the weight of the magnet. %, and then use the same lamp irradiation method to heat the surface of the NdFeB magnet sheet, so that the terbium powder quickly forms a film on the surface of the NdFeB magn...
Embodiment 3
[0031] Example 3, 1) Place multiple NdFeB magnet sheets with a size of 20*20*10T in an argon chamber, and evenly sprinkle dysprosium powder with an average particle size of 200 microns on the surface of the NdFeB magnet sheets, and the dysprosium The weight of the powder is 1.0% of the weight of the NdFeB magnet sheet, and then the NdFeB magnet sheet sprinkled with dysprosium powder is moved under the laser cladding device, and the dysprosium powder on the surface of the NdFeB magnet sheet is laser clad, so that the dysprosium The powder quickly forms a film on the surface of the NdFeB magnet sheet and solidifies and adheres to the surface of the NdFeB magnet sheet. After cooling, turn the NdFeB magnet sheet over and sprinkle dysprosium powder on the other side. The weight of the dysprosium powder is NdFeB 1.0% of the weight of the iron-boron magnet sheet, and then use the same method to laser clad the dysprosium powder on the surface of the NdFeB magnet sheet, so that the dysp...
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