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How to distinguish bonded NdFeB from sintered NdFeB

点击次数:43  更新时间:2019-09-28

Our company wins customers with high-quality products, perfect technical support and excellent after-sales service, and works hand in hand with customers to try our best to improve the energy-saving standard of urban buildings and create a better life. How to distinguish bonded NdFeB from sintered NdFeB? Now let's look at it together with Xiaobian.

In fact, both of them belong to NdFeB. The two kinds of magnets are distinguished according to their different production processes. Bonded NdFeB is actually molded by injection molding, while sintered NdFeB magnets are molded by high temperature heating after being evacuated.

Because bonded NdFeB magnets are molded by injection molding, they contain adhesives, of which the density is generally only 80% in theory. The sintered NdFeB magnets are heated by complex processes at high temperature. Therefore, in terms of magnetism, the bonded NdFeB decreases about 30% compared with the sintered NdFeB magnets.

Sintered NdFeB is an anisotropic magnet produced by powder sintering. Generally, after sintering, only the blanks can be produced and then machined (such as wire cutting, slicing, grinding, etc.) to become magnets of various shapes. Sintered Nd-Fe-B is a kind of brittle and hard material which is difficult to be processed. In the process of processing, it has large loss, high cost, poor dimensional accuracy, poor corrosion resistance, and its surface needs to be electroplated. However, it has the advantage of high performance, which is over 50m at present.

The above is the information about bonding NdFeB for you, and I hope it will help you. If you have any questions and need, please contact us to provide you with stable, reliable and energy-saving products.