粘结永磁铁氧体粉末注射成形技术研究进展

粉末注射成型技术PIM (Powder Injection Molding)在粘结永磁铁氧体领域已得到广泛应用与稳步发展，国内生产的中低档磁器件产品已与日本等发达国家的水平相当，但高档产品在磁性能的一致性和稳定性、机械性能和尺寸精度等方面还存在一定差距。本文综述了粘结永磁铁氧体注射成型技术的工艺特点和研究进展，分析总结了影响注射成型粘结永磁铁氧体磁体的磁性能和机械性能的关键因素，对该技术的研究重点和未来发展方向进行了探讨与展望。

Application of Powder Injection Molding technology

Powder injection molding(PIM) technology has been widely used and developed steadily in the field of bonded permanent magnet ferrite. The medium and low-grade magnetic device products in China have reached the level of developed countries such as Japan, but there is still a certain gap in the consistency and stability of magnetic properties, mechanical properties and dimensional accuracy of high-end products. In this paper, the process characteristics and research progress of injection molding technology for bonded permanent ferrite are reviewed, and the key factors affecting the magnetic properties and mechanical properties of injection-molded bonded permanent ferrite magnets are analyzed and summarized, and the research focus and future development direction of this technology are discussed and prospected.