We are a professional manufacturer of rare earth Neodymium magnets with wide range of shapes & sizes, from grade N35 to N52, N33M to N50M, N35H to N48H, N35SH to N45SH, N28UH to N40UH, N28EH to N38EH, N28AH to N33AH.

Neodymium (NdFeB) magnets, the third generation of rare earth permanent Neodymium magnet, are composed of Neodymium, Iron, Boron and a few transition metals. They have high remanence, high coercive force, high energy product, and high performance /cost. Currently Neodymium (NdFeB) magnets are the strongest magnets available in the world.

Manufacturing Process of Rare Earth Neodymium Magnets

Neodymium, Iron, Boron and a few transition metals will be made into the NdFeB (Neodymium) powder, then fine NdFeB powder will be compacted in a die and sintered, fusing the powder into a solid material. There are 2 forms of pressing: die pressing and isostatic pressing. Sintered parts normally need some finish machining in order to meet final tolerances.

Machining & Tolerance of Rare Eart Neodymium Magnets

Generally, (Neodymium) NdFeB magnets must be machined using diamond-grinding techniques. Sometimes, machining operations may be performed on Neodymium (NdFeB) materials using carbide tools, but surface finishes thus obtained may be less than optimal. The Standard tolerances for NdFeB (Neodymium) magnets are +/- 0.1mm for ground dimensions, but sticter tolerances are possible if specially required.

Surface treatments of Rare Earth Neodymium Magnets

The corrosion resistance of NdFeB (Neodymium) magnets is considered poor. Surface coating or plating is therefore highly recommended for NdFeB (Neodymium) magnets. All kinds of surface coating are available, like Nickel, Zn, Ni-Cu-Ni, Gold, Silver, Sn, Chrome and etc.

Application of Rare Earth Neodymium Magnets

Widely used in automobiles, mobile phones, digital cameras, jewelry, clothing, all kinds of hardware accessories, electrical, laser heads, toys, gifts, speakers, packing, leather goods, medical equipment and adverying, Switchboard, voice coil motors (VCM's) in hard disk drives, high performance motors, brushless DC motors, magnetic separation, magnetic resonance imaging, sensors, loudspeakers etc.

The Drawing of N45SH Block Super Strong Neodymium Magnets Rare Earth Magnets with Nickel Coating



Pictures of N45SH Block Super Strong Neodymium Magnets Rare Earth Magnets with Nickel Coating

We also produce the custom NdFeB block magnet according to your design,meanwhile we supply some environmental surface coating for you, such as rubber coating,PTFE coating, ABS plastic coating etc.,which are our newest coating,if you are interested,please let us know,we will supply good service for you.