Injection NdFeB Magnet Ring

Injection molded NdFeB magnets are made of NdFeB magnetic powder, thermoplastic binder and a small amount of polymer additives (including coupling agents, lubricants, antioxidants and plasticizers, etc.) mixed, kneaded and extruded into granules. Finally, bonded NdFeB magnets are produced using an injection molding process. Depending on whether an orientation magnetic field is applied during the molding process, injection-molded NdFeB magnets can be further divided into isotropic injection-molded NdFeB magnets and anisotropic injection-molded NdFeB magnets.

Compared with anisotropic magnets, the output of isotropic magnets has an absolute advantage, so injection molded NdFeB magnets usually refer to isotropic injection molded NdFeB magnets. Injection-molded NdFeB magnets have a lower magnetic powder filling rate, so their magnetic properties are significantly lower than pressed NdFeB magnets. The most commonly used thermoplastic resins for injection molded NdFeB magnets include nylon 12 (PA12/Nylon 12), nylon 6 (PA6/Nylon 6) and high temperature resistant polyphenylene sulfide (PPS). Injection molded magnets based on these three have the highest The working temperature can reach 120℃, 150℃ and 180℃ respectively.

Injection-molded NdFeB magnets have high dimensional accuracy, are suitable for complex shapes, require no subsequent processing steps, are easy to achieve mass production, and can be directly injection-molded with parts made of other materials to form components. In addition, injection molded magnets have good toughness and are not prone to cracking under external impact. Injection-molded NdFeB magnets have been widely used in household appliances, office equipment, consumer electronics, and the automotive industry.