As a high-performance permanent magnet material, segment shaped intered NdFeB Magnets are widely used in motors, sensors, medical equipment, electric vehicles, wind power generation and other fields. Its excellent magnetic properties and unique fan-shaped structure give this product great advantages in design and application.

The manufacturing of segment shaped intered NdFeB Magnets starts with selected raw materials, which mainly contain the rare earth elements neodymium, iron, boron and other trace elements. Based on the required magnetic properties, technicians need to carefully design and prepare the chemical composition ratio of the magnetic powder. These powders undergo magnetic field orientation, mechanical stirring, vacuum sintering and other processes to ensure that the final product has the characteristics of high remanence, high coercive force and high magnetic energy product.

Powder preparation is a key step in the manufacturing of segment shaped intered NdFeB Magnets. First, raw materials containing elements such as neodymium, iron, and boron are subjected to a series of physical and chemical treatments such as hydrogen explosion, reduction, crushing, and classification to produce micron-sized NdFeB magnetic powder. Next, the powder is magnetically oriented in a strong magnetic field environment to ensure that the magnetic domains maintain a consistent magnetization direction during the pressing and sintering processes to improve the magnetic properties of the magnet. The oriented magnetic powder is then placed into a mold for compression. NdFeB magnets with a sector-shaped structure require specially customized molds to ensure that the powder forms a predetermined sector-shaped structure during the pressing process. High pressure is applied through precision hydraulic equipment to press the magnetic powder into a billet of a certain density and shape, ready for the further sintering process. The pressed fan-shaped blank enters the sintering furnace for high-temperature sintering. During the sintering process, a dense solid magnet is formed through a series of metallurgical reactions such as diffusion and solid solution between powder particles.

The selection of sintering temperature and holding time is very critical and directly affects the microstructure and magnetic properties of the magnet. After sintering is completed, the magnet will undergo a series of heat treatment processes, including annealing, aging, etc., to eliminate internal stress, optimize the microstructure, and ensure stable and long-lasting magnetic properties. Sintered sector magnets also require mechanical processing methods such as turning and grinding to accurately adjust the size and shape and meet surface finish requirements. Finally, surface protection treatments such as electrophoresis, electroplating, and spray coating are usually performed on the surface of the magnet to improve the magnet's anti-oxidation and anti-corrosion capabilities and extend its service life. After completing the above process, the fan-shaped sintered NdFeB is formed. Magnets will be magnetized to orient their internal magnetic domains, giving them high magnetic properties.

After magnetization is completed, the magnet must undergo strict magnetic performance testing, dimensional testing, corrosion resistance testing, etc. to ensure that it meets design requirements and industry standards. The manufacturing process of segment shaped intered NdFeB Magnets is a comprehensive project integrating materials and materials. Science, metallurgical technology, precision machining and surface treatment technology. The entire process from raw material selection, formula design to magnetization testing requires precise control and strict monitoring to ensure the high performance and quality of the final product. With the continuous advancement of science and technology and the continued growth of market demand, the manufacturing process of segment shaped intered NdFeB Magnets will continue to be optimized and improved, providing stronger magnetic technology support for the innovative development of various industries.