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Coercivity of nd-fe-b magnets

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Coercivity of nd-fe-b magnets

NdFeB permanent magnet ferrite has high magnetic energy product and high coercivity of NdFeB magnet, and is used in many industries such as electronic devices, electronic computers, vehicles, mechanical equipment, electric power and medical equipment. The magnetic field of NdFeB magnet is divided into sintered NdFeB magnet and bonded NdFeB magnet. At this stage, the production process of sintered NdFeB permanent magnet is as follows: raw material preparation in advance - casting smelting - grinding - pressing - calcining - aging - inspection.

        NdFeB permanent magnet ferrite has high magnetic energy product and high coercivity of NdFeB magnet, and is used in many industries such as electronic devices, electronic computers, vehicles, mechanical equipment, electric power and medical equipment. The magnetic field of NdFeB magnet is divided into sintered NdFeB magnet and bonded NdFeB magnet. At this stage, the production process of sintered NdFeB permanent magnet is as follows: raw material preparation in advance - casting smelting - grinding - pressing - calcining - aging - inspection.


       Neodymium iron boron magnet, also known as neodymium iron boron magnet rare earth permanent magnet, is a tetragonal crystal produced by neodymium, iron and boron. Do you know why the electromagnetic field of NdFeB magnet rare earth permanent magnet decreases in summer? Let's get to know what the adverse effects of ambient temperature on NdFeB magnets and rare earth permanent magnets are?

       Does the coercivity of NdFeB magnets affect the magnetic flux? Hcj's intrinsic permeability is the increase in the magnetic induction in the opposite direction required to reduce the magnetic field's magnetization to zero. It is called the intrinsic permeability. Its unit of quantity is the same as the permeability. The types of magnetic materials are classified according to the size of their intrinsic permeability. Low permeability N, medium level permeability M, high coercivity H, extremely high permeability UH, extremely high coercivity EH, and supreme permeability TH. The intrinsic permeability of strong NdFeB magnets will decrease with the increase of air temperature. Therefore, when selecting and applying strong NdFeB magnets, you must select the appropriate model.



        Higher operating temperature: The environmental temperature limit of NdFeB rare earth permanent magnet has led to the development of a series of grades of magnet to meet different operating temperature requirements. Please refer to your characteristic file directory to compare the operating temperature range of each grade of magnet. It is necessary to determine a higher operating temperature before selecting a strong NdFeB magnet. The heat resistance of NdFeB magnet is not very good. At present, the high temperature is 200 degrees of SmCo. The 30 magnetic energy product can withstand 300 degrees. After reducing the magnetic loss, it can reach 450 degrees.

        NdFeB has very high magnetic permeability and coercive force of NdFeB magnet. The strong NdFeB magnet manufacturers are not easy to demagnetize and magnetize under normal conditions and general electromagnetic field standards. Assuming that the natural environment is moderate, even through long-term application, the magnetic energy damage of the magnetic field will not be very large. Therefore, in the specific application, people usually ignore the harm of the duration factor to the magnetic energy.


         Comparison of coercivity of samarium cobalt magnets: samarium cobalt magnets have relatively high prices, stable permeability and good temperature characteristics, but in many cases are replaced by neodymium iron boron magnets. Samarium cobalt magnets are more suitable for working in high-temperature ring mirrors than neodymium iron boron magnets.

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