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Basic introduction of powerful magnets

Powerful magnets are currently widely used magnets, because they can absorb 640 times their own objects, and their magnetism is far more than that of ferrites, alumni, and other magnets. This kind of magnet is very practical. Basic knowledge and application scope, I hope to bring you some help. The value of the reverse magnetic field strength required to reduce the magnetic induction strength to zero when the magnet after saturation magnetization of the strong magnet technology is reversely magnetized is called magnetic coercivity (Hcb). However, the magnetization of the magnet is not zero at this time, but the reverse magnetic field and the magnetization of the magnet cancel each other out. (The external magnetic induction intensity is zero.) At this time, if the external magnetic field is cancelled, the magnet still has a certain magnetic performance. The coercive force of NdFeB is generally above 11000Oe. A magnet is magnetized by an external magnetic field in a closed circuit environment to technical saturation and then the external magnetic field is cancelled. At this time, the magnetic induction strength exhibited by the magnet is called remanence. It represents the maximum magnetic flux value that a magnet can provide.


It can be seen from the demagnetization curve that it corresponds to the case when the air gap is zero, so the magnetic induction strength of the magnet in the actual magnetic circuit is less than the remanence. NdFeB is the highest practical permanent magnetic material with the highest Br found today. The strength of the reverse magnetic field that a strong magnet needs to reduce the magnetization of the magnet to zero is called the intrinsic coercive force. The intrinsic coercive force is a physical quantity that measures the magnet's resistance to demagnetization. If the external magnetic field is equal to the intrinsic coercive force of the magnet, the magnet's magnetism will be basically eliminated. The Hcj of strong magnets will decrease as the temperature rises, so you should choose a high Hcj grade when you need to work in a high temperature environment.


Our company's powerful magnets are guaranteed quality and the price is right. Xiamen everbeen Magnetic Industry Co., Ltd. is a high-tech enterprise specializing in the R & D, production and sales of rare earth permanent magnet materials, magnetic devices, magnetic tools and products related to magnetic materials. The company has passed ISO9001 system certification, and produces and sells rare earth permanent magnet products with various performances and shapes. In addition, the company relies on its extensive experience in magnetic material machining and strong production capacity, is committed to the development, production and sales of magnetic components and magnetic tools, to provide customers with high-quality magnetic components and magnetic tool products. At present, our company's NdFeB permanent magnet materials and magnetic components have been widely used in machinery processing, electro-acoustics, motors, instruments, automatic control, wind power generation, luggage, toys, craft jewelry and other fields. We are willing to develop together with customers at home and abroad and create a better future with a sincere attitude.


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