Injection Molded Magnets
Injection Molded Magnets
Injection molded magnets, often referred to as molded composite magnets, represent a class of advanced materials formed by blending thermoplastic resin with magnetic powder. This unique amalgamation is meticulously processed under pressure, allowing it to flow into a precisely designed mold cavity. Within this cavity, the material takes on its final form, undergoes orientation, experiences a controlled cooling process, and ultimately solidifies into the desired shape. The injection molding process is capable of producing an array of intricate shapes, including thin-walled rings, rods, and complex custom geometries. Additionally, these magnets can be readily combined with other metal components to create versatile assemblies.
Magnetic Properties
| Magnet Type | Grade | Br | Hcb | Hcj | (BH)max | TW | Tensile streng | 270°Cx5kg Mell Flow Rate | Density | Molding shrikage Coefficient | Urec | αBr | ||||
| mT | (kGs) | 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 | – | ||
| Injection Ferrite Magnets | 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 magnet | 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 | 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 | – | 1.25 | -0.15 | |
| 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 | – | 1.2 | -0.1 | |
| 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 | – | 1.2 | -0.1 | |
| 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 | – | 1.2 | -0.1 | |
| 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 | – | 1.13 | -0.15 | |
| Injection SmCo Magnets | 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 | – | – | – | – | |||
Remark：*—Isotropic,others are anisotropic.
Injection molded magnets
Injection molded magnets leverage a range of magnetic powders, including neodymium iron boron (NdFeB), samarium cobalt (SmCo), and ferrite, in conjunction with thermoplastic resins such as PA6, PA12, and PPS.
Application
The versatility of SmCo permanent magnets finds application across a diverse range of industries where magnetic stability and performance are paramount. Notably, it is a cornerstone material in critical sectors such as aerospace, defense, telecommunications, medical instrumentation, and electric motors, where demanding operating conditions necessitate the exceptional magnetic properties and reliability that SmCo magnets provide.
