The price of rare earth product is still increasing now, and this growth trend might be unchanged within this year. Most of customers already felt the dramatic change of procurement cost. The reasons hiding behind the price soar already shown in our previous news. The Rare Earth Office of MII of (Ministry of Industry and Information […]
Techtalk
Unconventional Detection Method for Internal Defect of Injection Molded Magnet
Injection molded magnet were already applied into motor and sensor application for several years. The injection molded rotor assemblies, insert molded magnetic components and over-molded magnetic components has attracted increasing attention from automotive and electronic industry. Unlike the compression molded magnet, the density of injection molded magnet always fairly close to its theoretical density. For injection […]
The Magnetic Field Strength of Permanent Magnet
For magnet users, how to confirm the grade and magnetic properties are still a long standing issue. Most of users can’t get the value of main magnetic parameters by themselves. In this case, the relative measurement of magnetic properties is the best solution. The relative measurement of magnetic properties includes magnetic field strength, magnetic flux […]
NdFeB Compound for Compression Molded Magnet
According to its molding technology, the bonded magnet can be mainly divided into compression, injection, extrusion and calendar types. The compression molded magnet is the most widely used among them. NdFeB compound play an extremely important part in the manufacturing process of compression molded magnet. The preparation of NdFeB compound The first step for the preparation of NdFeB […]
About Anisotropic NdFeB Powder
In addition to hot-pressed magnet and high abundant rare earth permanent magnet, anisotropic bonded magnet is also regarded as a solution to fill the (BH)max gap between isotropic bonded Neodymium magnet and sintered Neodymium magnet. Anisotropic NdFeB powder is the foundation of anisotropic bonded magnet production. Manufacturing Process of Anisotropic NdFeB Powder Anisotropic NdFeB powder can be manufactured by either [...]
About Isotropic NdFeB Powder
Isotropic NdFeB powder is referred in particular to the magnetic powder for bonded magnets. Manufacturing process of isotropic NdFeB powder is completely distinct from powder process of sintered Neodymium magnet. The powder fabricated by crushing casting strip or sintered Neodymium magnet does not have functional intrinsic coercivity under the same particle size as isotropic NdFeB powder. [...]
N55: King of the Permanent Magnet
The theoretical (BH)max value of NdFeB magnet is 512kJ/m3(64MGOe), and most of magnet manufacturer can make N52 magnet now. The (BH)max of N52 already achieved 90% of theoretical limit. The question in the mind of many users – is there any grade stronger than N52 magnet? N55 is the most powerful grade available currently for commercial […]
Manufacturing Process of Ferrite Magnet
The flow chart of ferrite magnets Weighing & Mixing The raw material of ferrite includes main raw material, additives and flux agents. Fe2O3, BaCO3, SrCO3 and CaCO3 are main raw material of ferrite. The weighing process need to follow the formula strictly, or cannot get the desirable magnetic properties. The raw material will be mixed in specialized equipment […]
The Hysteresis Loop and Demagnetization Curve of Magnet
The demagnetization curve is the second quadrant of hysteresis loop, and we can get the main magnetics properties of magnet via demagnetization curve. The magnetization behavior of magnet can be shown by first quadrant of hysteresis loop. Different types of magnet have its own hysteresis loop and demagnetization curve. H: The values of the eternal magnetic field […]
The Manufacture Process of Alnico Casting Magnets
The flow chart of Alnico casting magnets The Alnico casting magnet can be divided into vacuum casting magnet and simple one. For simple Alnico casting magnet, the manufacturer will use resin-coated sand as raw material of mold. The molding process is relied on core shooting machine. Customer need to bear tooling cost when there’s no […]
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