Bonded Neodymium Magnet Manufacturing

Bonded Neodymium magnets are made of the powerful Nd-Fe-B material mixed into an epoxy binder. The mix is approximately 97 vol% magnet material to 3 vol% epoxy. The manufacturing process involves combining Nd-Fe-B powder with an epoxy binder and compressing the mixture in a press and curing the part in an oven. Since the material is formed by compression bonding.

The process for producing Bonded Neodymium Magnet is not very complex, NdFeB powder mixed with epoxy blinder and compressing this kind of mixture in a press, the die usually simple and then curing these parts in an oven. And later, the parts need to be machined for their surface performance and for their corrosion resistance. the very important processes for this materials are coating and magnetizing. The coating is to plating or coating to protect Bonded Neodymium out of corrosion. The magnetizing process is the key process to make very different magnetizing direction from other magnetic materials. Because Bonded Neodymium Magnets performance a very high magnetic properties and an isotropic material, they can be made to very complex magnetic direction and a magnetic field. They can achieve special requirements for customers.

Compression bonded neodymium magnets are ideal for applications requiring tight tolerances and high magnetic strength. They are isotropic – so they may be magnetized in any direction – and the epoxy binder allows bonded magnets to be resistant to most industrial automotive fluids and solvents. Compression bonded magnets exhibit good mechanical strength. Tooling costs are generally lower than they are for injection molded parts. Bonded magnets have an operating temperature range from -40˚C to 165˚C.


I am the founder and director of Ningbo Jack Magnetics Co.,Ltd. Our mission is to give you best support on buying and using permanent magnets, save your money and time on your magnetic applications.

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