|
Grade |
Injection Molding | ||||||
| HMG-2 | HMG-3 | HMG-4 | HMG-5 | HMG-6 | HMG-7 | HMG-8 | |
| Br (KGs) | 3.0-4.0 | 3.5-4.5 | 4.5-5.0 | 4.5～5.5 | 5.0-6.0 | 5.3-6.2 | 5.9-6.5 |
| Residual lnduction (T) | 0.3-0.4 | 0.35-0.45 | 0.45-0.5 | 0.45-0.55 | 0.5-0.6 | 0.53-0.62 | 0.59-0.65 |
| Hcb (Koe) | 2.4-3.2 | 2.8-3.2 | 3.0-4.0 | 3.5-4.5 | 4.0-4.5 | 4.3-5.2 | 4.8-5.4 |
| Coercive Force (kA/m) | 192-256 | 224-256 | 240-320 | 280-360 | 320-360 | 344-416 | 384-432 |
| Hci (Koe) | 6.0-8.0 | 6.0-8.0 | 7.0-9.0 | 7.0-9.0 | 7.0-9.0 | 8.5-10 | 8.5-10 |
| Intrinsic Coercive Force(kA/m) | 480-640 | 480-640 | 560-720 | 560-720 | 560-720 | 680-800 | 680-800 |
| （BH)max (MGOe) | 2.0-3.0 | 2.5-3.5 | 4.0-5.5 | 4.5~5.5 | 6.0-7.0 | 6.0-7.5 | 7.5-8.5 |
| Max.Energy Product (kJ/m3) | 16-24 | 20-28 | 32-44 | 36~44 | 48-56 | 48-60 | 60-68 |
| μRecoll (μH/m) Permeabilily |
1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 |
| Temperature Coefficient of B(%/℃) |
-0.11 | -0.11 | -0.11 | -0.11 | -0.11 | -0.11 | -0.11 |
| Tc Curie Temperature(℃) | 350 | 320 | 320 | 320 | 320 | 350 | 350 |
| Baturation(KA/m) Magnetizing Force(Koe) |
＞1600 | ＞1592 | ＞1592 | ＞1592 | ＞1592 | ＞1592 | ＞1592 |
| ＞20 | ＞20 | ＞20 | ＞20 | ＞20 | ＞20 | ＞20 | |
| Max.Operating Temperature(℃) | 160 | 160 | 160 | 160 | 160 | 160 | 160 |
| Density (g/cm3) | 4.0-4.5 | 4.0-4.5 | 3.9~4.9 | 4.5~5.0 | 4.5~5.5 | 5.0~5.5 | 5.4~5.7 |
Injection molding of NdFeB rare earth permanent magnet material, the product has both rigidity and elasticity; it can be formed with metal, plastic and other inlays at one time, simplifies assembly, is strong and firm (not easy to fall off and deform); it can ensure that the precision hot melt state is full Mold cavity, multiple parts in one mold, uniform density, good consistency of magnetic field; plastic coating of magnetic powder, magnet has good corrosion resistance. This type of product is radial multi-pole magnetization, which is injection molded by NdFeB magnetic powder, nylon 12, and metal gasket inserts (according to customer product needs).
Compared with molded bonded permanent magnets, NdFeB magnet injection molding has the following outstanding advantages.
1. High production efficiency and low processing cost.
2. It is convenient to process magnets with inserts.
3. It can form magnets with more complex shapes and high tolerance requirements.
4. Various magnets with small size and high precision can be produced.
5. No need for coating, good chemical stability and corrosion resistance.
6. Low density, high mechanical strength.
7. The material of the runner can be recycled.
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