Polymer Bonded NdFeb Magnet
Mixed by magnetic powders and adhesives, bonded permanent magnets are produced through the process of forming and solidification. Anisotropic bonded magnets with stronger magnetic property can be developed. Our bonded products of NdFeB is mixing NdFeB powder with polymer binder and then pressing. In our company, press forming is adopted to manufacture all kinds of bonded magnets. With the advantages of outstanding mechanical strength and high accuracy in dimension, this kind of magnets is resistant to shock and usually further machining is not required. If necessary, the Compress Bonded NdFeB can be formed integrally with other components as well. So that lot production is easy to be implemented. Compress Bonded NdFeB have exactitude size, stable capability, excellent quality, and various specifications, and are widely used. They are world-widely sold and well appraised. Much higher corrosion resistance in comparison with sintered NdFeB magnets. We can supply such types as ring, tile/segment, slim rod and other special shapes and wide variety of size ranges.
Some of the Advantages of Polymer Bonded NdFeB Magnets
- Complex magnetization patterns
- Acceptable environmental stability after coating
- Easy processing
In our company, press forming is adopted to manufacture all kinds of bonded magnets. We can supply such types as ring, tile, slim rod and other special shapes.
Characteristics of Polymer Bonded NdFeB:
- Excellent stability and evenness of magnetic flux density.
- Strong anti-corrosion of appearance coating.
- Suitable for making small volume magnet with complex shape.
- Regular shape, precision size.
- Strong anti-demagnetization
Application of Polymer Bonded NdFeB:
Bonded magnets are widely used in all kinds of DC brushless motor of automotive, stepping motor, lighter, sensor; HDD(PC disk), stator or rotor of spindle driver of harddisk, CD-ROM, DVD; Printer, electronic clock, audio and electric tools; Mobile phone and BP vibration motor, micro-special motors, automobile's electric motors, auto-controlling devices, transducers, drives, electronic communication devices, instruments and appliances.
Professional Cordless Powder Tools Offer Opportunities for Expanded use of Bonded Neo.
Issues Limiting Expanded Use:
- Cost of Material ($/MGOe)
- Thermal Demagnetization
- Ease of Magnetization
- Corrosion Resistance
| P/N | Br Remanence |
Hcj Intrinsic Coercivity |
Hcb Coercive Force |
(BH)max. Maximum Energy Product |
||||
|---|---|---|---|---|---|---|---|---|
| MT | kG | kA/m | kOe | kA/m | kOe | KJ/m3 | MGOe | |
| NdFeB-NB6 | 440-560 | 4.40-5.60 | 560-680 | 7.0-8.5 | 240-320 | 3.0-4.0 | 32-48 | 4.0-6.0 |
| NdFeB-NB8 | 540-640 | 5.40-6.40 | 640-720 | 8.0-9.0 | 320-400 | 4.0-5.0 | 48-64 | 6.0-8.0 |
| NdFeB-NB8M | 540-620 | 5.40-6.20 | 1040-1360 | 13.0-17.0 | 384-464 | 4.8-5.8 | 56-72 | 7.0-9.0 |
| NdFeB-NB10 | 620-700 | 6.20-7.00 | 608-800 | 7.6-10.0 | 360-456 | 4.5-5.7 | 64-80 | 8.0-10.0 |
| NdFeB-NB12 | 690-760 | 6.90-7.60 | 640-840 | 8.0-10.5 | 400-480 | 5.0-6.0 | 80-96 | 10.0-12.0 |
| P/N | μrec Recoil Permeability |
Hs Magnetizing Field |
O Density |
Temperature Coefficient | Tc Curie Temperature |
K[2] Ring Crushing Strength |
Coefficient of Thermal Expansion (25-200℃) | ||
|---|---|---|---|---|---|---|---|---|---|
| μrec | kA/m | g/cm3 | kOe | α(Br)%/℃ | β(Hcj)%/℃ | ℃ | kg/mm2 | 10-6/℃ | |
| NdFeB-NB6 | 1.22 | √1600 | 5.1-5.6 | √20 | -0.14 | -0.40 | 360 | √5.5 | 4.8 |
| NdFeB-NB8 | 1.22 | √1600 | 5.4-5.8 | √20 | -0.13 | -0.40 | 360 | √5.5 | 4.8 |
| NdFeB-NB8M | 1.18 | √2000 | 5.8-6.0 | √25 | -0.12 | -0.38 | 305 | √5.5 | 4.8 |
| NdFeB-NB10 | 1.22 | √1600 | 5.8-6.0 | √20 | -0.11 | -0.40 | 360 | √5.5 | 4.8 |
| NdFeB-NB12 | 1.17 | √1600 | 5.9-6.1 | √20 | -0.11 | -0.41 | 360 | √5.5 | 4.8 |