Sintered neodymium iron boron and bonded neodymium iron boron have a large price difference(about 10 times), and the bond is much cheaper. On the one hand, there is less material and less process. The key is that the process ability of sintering neodymium iron boron in China is too poor. The technology is currently mainly in Japan. Hands, The same material we can not make high-performance neodymium iron boron, can only buy the finished product from Japan at a high price, and we have materials, and the bonding process of neodymium iron boron is simple, we have completely mastered, so Japan can only stop production. The inability to compete with China is the reason.
Sintered neodymium iron boron is an anisotropic magnet produced by powder sintering. Generally, only rough can be produced after sintering, and then mechanical processing(such as wire cutting, slicing, grinding, etc.) can become magnetic bodies of various shapes. Sintered neodymium iron boron is a brittle hard material that is difficult to process. It has large losses, high cost, poor dimensional accuracy, poor corrosion resistance, and requires electroplating on the surface. However, the advantage is that the performance is higher and it has been achieved above 50M.
Although the market of bonded neodymium iron boron magnet started late, the market grew rapidly. Compared with sintered neodymium iron boron magnets, bonded neodymium iron boron magnets have obvious advantages in size accuracy, production cost and stability. With the development of miniaturization and miniaturization of electronic devices, their application fields will continue to expand. Market demand is growing steadily, and there is huge room for magnetic iron patent release. The market for hard disk drives is growing steadily, and the penetration rate of automotive micromotors and mobile phone vibration Motors is increasing continuously, which ensures the rapid growth of market demand for bonded neodymium iron boron magnets. The maturity of MQ magnetic powder patent rights and the emergence of new technologies such as anisotropic bonding neodymium iron boron magnets have laid a reliable foundation for the future development of neodymium iron boron magnets. Glue neodymium ferroboron magnet