Some things you need to know about sintered neodymium iron boron magnets (NdFeB)
1. What is a sintered NdFeB magnet?
Sintered NdFeB magnets are widely used in the fields of computers, medical equipment, wind power generation, consumer electronics, etc. Its appearance promotes the progress of modern technology.
2. How are sintered NdFeB magnets made? What are the processing techniques?
Sintered neodymium iron boron magnets are produced by powder metallurgy. After the preliminary preparations of raw material preparation, composition design, batching calculation and weighing are completed,
Smelting → casting ingots/slices → crushing → milling → mixing → magnetic field orientation and pressing → sintering → tempering → machining → surface coating treatment. After completing this series of NdFeB magnet technological processes, quality inspection will be carried out , Magnetization, packaging of finished products, and finally delivered to customers.
3. What is the difference between sintered NdFeB magnet and bonding?
The main difference between the two products lies in the process flow. The bonded NdFeB magnet is actually made of NdFeB magnetic powder and adhesive, which is similar to injection molding. Sintered NdFeB is made with the complicated process described above. It is formed by vacuuming and heating at high temperature.
Bonded NdFeB magnets are not as good as sintered NdFeB magnets in terms of performance. The reason is that they are made with adhesives, and the density is only 80% of the theoretical level. In general, the application range of sintered NdFeB magnets will be wider and higher than bonded ones. .
I believe everyone knows that a magnet has two poles, regardless of the shape of the magnet. No matter what shape it is, it has only two poles. The reason why magnet paper is made into various shapes is related to the actual use of magnets. In different machines, magnets of different shapes are needed to play different roles. So, what is the application range of ring magnets? Tips from China ring magnet manufacturer.
According to different magnetic effects and different sizes, ring magnets are used in many fields. Let's start from a small angle. There are many places in our lives where we can see such small circular magnets, such as suitcase magnets, stationery magnets and tool magnets. When we were young, the magnets of high-end stationery boxes were very small and could be used to switch. The switch of the bag is still such a small ring magnet.
1. A toy, magnetic chess, small circular magnets with different chess pieces engraved on it, and then installed on an iron chess board. This is a very convenient entertainment device.
2. A magnetized cup, based on proper magnetism, is beneficial to human health. The bottom of the cup is a ring magnet of appropriate size, which can absorb heavy metal impurities in the water to a certain extent, which is beneficial to human body and health care, and it is also a very popular health care equipment until now.
3. Larger ring magnets are used in fishing, mechanical equipment and other fields.