permanent magnet
Molded Magnets
Injection Molded Magnets
Injection molded magnets, commonly known as molded composite magnets, are an advanced class of materials made by mixing thermoplastic resins with magnetic powders. This unique combination is carefully processed under pressure, allowing it to flow into a precisely designed mold cavity. Within this cavity, the material takes on its final shape, undergoes orientation, experiences a controlled cooling process, and ultimately solidifies into the desired form. The injection molding process can produce a range of complex shapes, including thin-walled rings, rods, and intricate custom geometric shapes. Moreover, these magnets can be easily combined with other metal parts to create multifunctional components.
Magnetic Properties
| Grade | Br | Hcb | Hcj | (BH)max | TW | Tensile streng | 270°Cx5kg Mell Flow Rate | Density | Molding shrikage Coefficient | ||||
| kA/m | kOe | kA/m | kOe | kJ/m3 | MGOe | °C | Mpa | G/10 min | g/cm3 | % | - | %/°C | |
| - | - | - | - | - | - | - | - | - | ASTMD-638 | ASTMD-638 | ASTMD-792 | DIC Method | - |
| Ferrite Powder +Binder Nylon6 | |||||||||||||
| *IMF0606 | 185 | - | 127 | - | 231 | - | 6.4 | - | ≤140 | - | - | - | - |
| *IMF0606 | 220 | - | 171 | - | 278 | - | 9.6 | - | ≤140 | 50 | 200 | 3.05 | 0.6 |
| *IMF0606 | 250 | - | 191 | - | 223 | - | 12.4 | - | ≤140 | 60 | 120 | 3.4 | 0.6 |
| *IMF0606 | 260 | - | 195 | - | 255 | - | 13.6 | - | ≤140 | 50 | 100 | 3.45 | 0.6 |
| *IMF0606 | 275 | - | 199 | - | 247 | - | 14.4 | - | ≤140 | 55 | 130 | 3.5 | 0.6 |
| *IMF0606 | 280 | - | 203 | - | 238 | - | 15.6 | - | ≤140 | 54 | 130 | 3.6 | 0.5 |
| *IMF0606 | 290 | - | 207 | - | 250 | - | 16.8 | - | ≤140 | 60 | 110 | 3.65 | 0.5 |
| *IMF0606 | 295 | - | 211 | - | 263 | - | 17.6 | - | ≤140 | 50 | 100 | 3.7 | 0.4 |
| Ferrite Powder +Binder Nylon12 | |||||||||||||
| IMF0212 | 115 | - | 79 | - | 203 | - | 2.4 | - | ≤120 | 40 | 200 | 2.9 | 0.7 |
| IMF1212 | 265 | - | 199 | - | 250 | - | 12.8 | - | ≤120 | 50 | 50 | 3.45 | 0.5 |
| IMF1512 | 280 | - | 195 | - | 250 | - | 15.2 | - | ≤120 | 40 | - | 3.6 | 0.5 |
| IMF1612 | 290 | - | 199 | - | 247 | - | 16.8 | - | ≤120 | 40 | - | 3.65 | 0.5 |
| Hybrid Power +Binder Nylon/PPS | |||||||||||||
| IMH13PPS | 260 | - | 179 | - | 227 | - | 13.2 | - | ≤180(PPS) | 40 | 40 | 3.55 | 0.4 |
| IMH34PPS | 450 | - | 302 | - | 915 | - | 33.6 | - | ≤180(PPS) | - | - | 4.65 | - |
| Injection NdFeB Magnets | |||||||||||||
| IMN-2 | 200-400 | 2.0-4.0 | 120-240 | 1.5-3.0 | 560-720 | 7.0-9.0 | 6.4-24 | 0.8-3.0 | ≤120 | - | - | 3.5-4.0 | - |
| IMN-4 | 400-490 | 4.0-4.9 | 247-310 | 3.1-3.9 | 573-732 | 7.2-9.2 | 28-36 | 3.5-4.5 | ≤120 | - | - | 4.0-5.0 | - |
| IMN-6 | 490-570 | 4.9-5.7 | 312-382 | 3.9-4.8 | 637-796 | 8.0-10.0 | 42-56 | 5.2-7.0 | ≤120 | - | - | 5.0-5.5 | - |
| IMN-8 | 570-630 | 5.7-6.3 | 382-430 | 4.8-5.4 | 676-835 | 8.5-10.5 | 59-67 | 7.4-8.4 | ≤120 | - | - | 5.0-5.5 | - |
| IMN-6H | 480-560 | 4.8-5.6 | 334-398 | 4.2-5.0 | 1035-1353 | 13.0-17.0 | 40-52 | 5.0-6.5 | ≤120 | - | - | 5.0-5.5 | - |
| Injection SmCo Magnets | |||||||||||||
| SMB-6(1:5) | 400 | 4 | 280 | 3.5 | 800 | 10 | 30~50 | 4~6 | ≤120 | - | - | - | - |
| SMB-10(1:5) | 500 | 5 | 320 | 5 | 800 | 10 | 50~65 | 6~8 | ≤120 | - | - | - | - |
| SMB-10(2:17) | 600 | 6 | 360 | 4.5 | 800 | 10 | 65~80 | 8~10 | ≤120 | - | - | - | - |
| SMB-12(2:17) | 700 | 7 | 400 | 5 | 800 | 10 | 80~95 | 10~12 | ≤120 | - | - | - | - |
Injection molded magnets utilize a range of magnetic powders, including neodymium-iron-boron (NdFeB), samarium-cobalt (SmCo), and ferrite, as well as thermoplastic resins such as PA6, PA12, and PPS.
Application
The unique characteristics of injection molded magnet products set them apart in many respects. They boast flawless, visually appealing surface finishes with extremely high dimensional accuracy, eliminating the need for subsequent secondary processing. Their complex shaping capabilities extend to micro-geometric forms, offering new dimensions of design freedom. Additionally, these magnets provide consistent performance stability, effectively withstand vibrations, and possess impressive resistance to mechanical shock.
These attributes collectively make injection molded magnets indispensable components in precision motion and sensing applications. Their versatility, coupled with their reliability and performance advantages, has led to widespread adoption in these demanding engineering fields.