magnetic material

Model number cross-reference charts for NdFeB magnets are usually provided by manufacturers or sellers to identify magnets with different specifications and properties. These model numbers usually consist of letters and numbers that represent the magnetic material composition, magnetic properties, and other information. Below is an example of a common NdFeB magnet model number cross-reference. 1.N35-N52: This series of models represents the magnetic performance level of NdFeB magnets, from N35 to N52, the magnetic performance gradually increases. For example, N52 neodymium magnets has the highest magnetic properties and the strongest suction. 2. N, M, H, SH, UH, EH, AH: These letters represent the magnetic temperature coefficient and the maximum use temperature of different grades. For example, N represents the standard level, which is suitable for use in general environments; M, H, SH, UH, EH, AH represent different temperature levels, which are suitable for use in high-temperature environments. 3. 35M, 38H, 42SH: These models are usually expressed as a combination of magnetic performance class and temperature class, e.g. 35M represents N35 class magnets and are suitable for use in medium temperatures (100 degrees Celsius). Br stands for remanent magnetism, remanent magnetism is not surface magnetism, although both are in gauss units, two pieces of the same size and shape of the magnet, the higher the remanent magnetism, the greater the surface magnetism, the stronger the magnetic properties. But two different shapes of magnets, the remanent magnetization may be the same, the remanent magnetization is related to the raw materials. The remanent magnetization is related to the raw material, while the apparent magnetization is related to the size, performance, shape and so on.(BH)max represents the maximum magnetic energy product, the larger the maximum magnetic energy product, the stronger the magnetism.Tw represents the maximum operating temperature, this parameter should be judged according to the magnet L/D ratio.

Strong Neodymium magnets are a common magnetic material, usually made of metal alloys such as iron, nickel and cobalt. They have a wide range of applications in modern industry and daily life, such as electric motors, generators, magnetic brakes, magnetic separators and so on. For the size of the remanent magnet of powerful magnets, whether bigger is better depends on the specific application scenario and requirements. First, let's understand what residual magnetism is. Residual magnetism is the magnetism that remains in a material after a magnetic field has been applied. In the case of a powerful Neodymium magnet, a higher remanent magnetism means that it is able to maintain a stronger magnetism after a magnetic field has been applied, which can be beneficial in some cases. In some applications, such as electric motors and generators, the remanent magnetism provides a continuous magnetic field that enables the conversion and transmission of electrical energy. Therefore, in these applications, the greater the remanent magnetism of a powerful magnet, the better, which can improve the efficiency and performance of the equipment. On the other hand, in applications where controlled magnetism is required, such as magnetic separators and magnetic brakes, excessive remanent magnetism may result in unwanted magnetic disturbances or uncontrollable magnetic forces that can affect the proper operation of the equipment. Therefore, in these applications, the remanent magnetism may need to be precisely controlled to ensure equipment stability and controllability. In addition, the amount of remanent magnetism in a powerful magnet can affect its long-term stability and life. Excessive remanent magnetism can lead to fatigue and demagnetization of the magnetic material, which can shorten the life of the equipment. Therefore, when designing and selecting powerful magnets, it is necessary to consider the size of the remanent magnetization, the requirements of the application, and the long-term stability of the material.

NdFeB magnet is a kind of rare earth permanent magnetic material, due to its wide application in modern technology, recycling and reuse of NdFeB magnet becomes more and more important. Below are some common methods of recycling NdFeB magnets: 1. Separation and recycling: Neodymium magnets are usually used in electronic equipment, automotive parts and other products. During the recycling process, NdFeB magnets can be separated from waste products by physical or chemical methods. This may involve steps such as dismantling equipment, crushing and magnetic separation. 2. Smelting and Extraction: Once the NdFeB magnets have been separated, the rare earth metals in them can be recovered through a smelting and extraction process. This usually involves heating the discarded magnet material to a high temperature and then using chemical methods to extract the rare earth metals from other materials. 3. Reuse: Recycled NdFeB magnets can be used in the production of new magnet products, thus reusing resources. This helps to reduce new mining of rare earth metals and reduce environmental impact. It should be noted that the recycling process of NdFeB magnets may require specialised equipment and technology, as well as compliance with relevant environmental regulations. Therefore, the recycling of NdFeB magnets should preferably be carried out by a professional recycling and reuse organisation.