Since the beginning of global industrialization in 1985, the world's demand for permanent magnets has greatly increased, and the permanent magnet industry has also flourished accordingly. With the development of global market, magnet manufacturers are also increasing, and from the perspective of customers, how to distinguish the quality of sintered neodymium iron boron magnets and bonded neodymium iron boron magnets? Here we introduce the three methods of fine magnetic electron editing.

 Judgment Method One: Observation from Production Process
In the production process, monitoring is also very important. It can be controlled by the measurement of SC film thickness and JM particle size distribution. The quality of the product depends on the control of the production process, but the customer will be very confused, how to judge the performance of the product I purchase? We can use some measuring instruments to measure and show our customers that the products meet the National standards. Customers can also select their own neodymium iron and boron brands based on magnet parameters Br(residual magnetism), Hcb(forced force), Hcj(internal force), and(BH) Max(maximum magnetic energy product). Choose products that meet their own requirements.
Judgment Method 2: Considering the Properties of Magnets
How to guarantee the magnetic properties of sintered neodymium ferroboron magnets should be controlled from the raw material production process, manufacturing requirements of enterprises, production process and magnetic field. The raw materials are purchased according to the raw material components specified by the National standards, and according to the requirements of the enterprise to manufacture high-grade or mid-grade or low-grade sintered neodymium iron boron. The advanced technology of sintering neodymium iron boron magnet determines the properties and quality of magnet. The most advanced technology makes magnets with higher performance.
Judgment Method III: Considering the magnetic field orientation of the magnet
Taking up the magnetic field, China is the only country in the world that uses two steps to press and form. In the orientation, the vertical molding with small pressure, and the final adoption of quasi-isostatic molding, this is one of the most important characteristics of the sintered neodymium iron boron industry in China. This is a technology that we Chinese people should be proud of.
Therefore, whether or not a sintered neodymium iron boron magnet is qualified requires not only the performance requirements, but also the control of size tolerance directly affects its application. The guarantee of size depends directly on the processing strength of the factory.