What’s the difference between bonded NdFeB magnets and sintered NdFeB magnets？ 2020-09-22
The bonded NdFeB magnets are molded by injection molding, so they contain adhesives, and the density is generally only 80% of the theoretical value. The sintered neodymium magnet is heated at a high temperature through a complicated process. Therefore, the bonded NdFeB magnet is attenuated by about 30% compared with the sintered NdFeB magnet. For example, the coercivity of our sintered magnet has reached 33AH. Therefore, sintered NdFeB is generally used in a wider range than bonded NdFeB.The degree of shrinkage depends on the thickness and shape of the product. The typical dimensional tolerance is: ±0.05mm. Therefore, the application range of sintered magnets is wider than that of bonded magnets.
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