How to distinguish bonded NdFeB and sintered NdFeB. Now let's take a look.
In fact, these two kinds of magnets belong to NdFeB. These two kinds of magnets are distinguished according to their production process. Bonded NdFeB is actually made by injection molding, while sintered NdFeB magnets are made by pumping out and heating at high temperatures.
Bonded NdFeB magnets contain adhesives because they are molded by injection molding, and the density is generally only 80 percent of the theoretical amount. The sintered NdFeB magnet has undergone a complex high temperature heating process, so in terms of magnetism, the attenuation of sintered NdFeB relative to sintered NdFeB is about 30%.
Sintered NdFeB magnetic is produced by powder sintering method of anisotropic magnets. Generally through sintering can only produce a blank, and then through mechanical processing (such as wire cutting, slicing, grinding, etc.) to become a variety of shapes of magnets. Sintered NdFeB is a hard and brittle material that is difficult to process. It has large loss in the process, high cost, poor dimensional accuracy and poor corrosion resistance, and the surface needs electroplating treatment. But the advantage is the high performance, has achieved more than 50M.
The above is for you to explain the NdFeB information, also hope to bring you help, if you have any questions and need, please contact us, to provide you with stable performance, reliable, energy saving products.
