| Model: | Sintered NdFeB |
|---|---|
| Brand: | Sintered NdFeB magnets |
| Origin: | Made In China |
| Category: | Electronics & Electricity / Magnetic Materials |
| Label: | Sintered NdFeB magne , Sintered NdFeB , Sintered magne |
| Price: |
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| Min. Order: | - |
| Last Online:16 Apr, 2012 |
| Sintered NdFeB magnets, the third generation of |
| rare earth permanent 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 Sintered NdFeB |
| magnets are the strongest magnets available in |
| the world. |
|
Manufacturing Process |
|
Neodymium, Iron, Boron and a few transition |
| metals will be made into the NdFeB powder, then |
| fine NdFeB powder will be compacted in a die and |
| sintered, fusing thepowder into a solid material. |
| Thereare 2 forms of pressing: die pressing and |
| isostatic pressing. Sintered parts normally need |
| some finish machining in order to meet final |
| tolerances. |
|
Machining & Tolerance |
| Generally, Sintered NdFeB magnets must be |
| machined using diamond-grinding techniques. |
| Sometimes, machining operations may be |
| performed on Sintered NdFeBmaterials using |
| carbide tools, but surface finishes thus obtained |
| may be less than optimal. |
|
The Standard tolerances for Sintered NdFeB |
| magnets are +/- 0.1mm for ground dimensions, |
| but sticter tolerances are possible if specially |
| required. |
|
Surface treatments |
|
The corrosion resistance of Sintered NdFeB |
| magnets is considered poor. Surface coating |
| or plating is therefore highly recommended for |
| Sintered NdFeB magnets. All kinds of surface |
| coating are available, like Nickel, Zn, Ni-Cu-Ni, |
| Gold, Silver, Sn, Chrome. We also applied |
| special surface protection to Sintered NdFeB |
| magnets, like ABS coating, Rubber coating, |
| PTFE(Telfon) coating, stainless steel case, etc. |
|
Magnetizing & Packing |
| Sintered NdFeB magnets require extremely high |
| magnetizing fields, and can be magnetized in |
| any direction as long as it is aligned properly. |
| In some instances multiple pole magnetization is |
| possible with special fixtures.All Sintered |
| NdFeB magnets are anisotropic, and can |
| only be magnetized in the orientation direction, |
| so particular consideration must be given |
| to this when designing complex assemblies, |
| if it is intended to magnetize after assembly. |
| Sintered NdFeB magnets are mechanically |
| weak, and magnetically very strong. They |
| should be packed properly in order to help |
| user to use and handle them. |
