Permanent Bonded NdFeB Magnet With Epoxy For Motors And Electronic Parts
Brief Introduction
Bonded NdFeB magnet is produced via the technique---a special form of NdFeB powder is blended with plastic carrier material, die pressed and then heated. They have lower energy than Sintered NdFeB. The bonded NdFeB are isotropic-i.e. they can be magnetized in any direction. According to the different processing methods, bonded NdFeB is divided into two types- Compression Moulding NdFeB and Injection Moulding NdFeB.Its use with temperature-resistant plastic enables good stability and coated with a special colophony for high rust-resistance. The Bonded NdFeB magnets are widely used in automobile, communication, computer, micro-motor, electronics and many other fields.
Models And Technical Parameters
| Compression Bonded NdFeB | |||||||
| Grade | Br (T) | bHc (KA/m) | jHc (KA/m) | BHmax(MGOe) | Density(g/cm3) | Br.Temp.Coefficient (%/) | Working Temp.() |
| BNP-6 | 0.52-0.60 | 304-360 | 640-800 | 5-7 | 5.3-5.8 | -0.13 | 140 |
| BNP-8 | 0.60-0.65 | 360-440 | 640-960 | 7-9 | 5.6-6.0 | -0.13 | 140 |
| BNP-10 | 0.65-0.70 | 360-464 | 640-960 | 9-10 | 5.8-6.1 | -0.11 | 120 |
| BNP-12 | 0.70-0.76 | 424-480 | 640-880 | 10-12 | 6.0-6.2 | -0.13 | 130 |
| BNP-8H | 0.55-0.62 | 400-480 | 960-1280 | 6-9 | 5.6-6.0 | -0.13 | 120 |
| Injection Bonded NdFeB | |||||||
| Grade | Br (T) | bHc (KA/m) | jHc (KA/m) | BHmax(MGOe) | Density(g/cm3) | Br.Temp.Coefficient (%/) | Working Temp.() |
| BNI-1 | 0.20-0.40 | 120-240 | 560-720 | 0.8-3.0 | 3.5-4.0 | -0.15 | 130 |
| BNI-4 | 0.40-0.49 | 240-310 | 570-730 | 3.5-4.5 | 4.0-5.0 | -0.1 | 130 |
| BNI-6 | 0.49-0.57 | 310-380 | 635-796 | 5.2-7.0 | 5.0-5.5 | -0.1 | 110 |
| BNI-8 | 0.57-0.63 | 380-430 | 676-835 | 7.4-8.4 | 5.0-5.5 | -0.1 | 120 |
| BNI-6H | 0.48-0.56 | 330-400 | 1035-1353 | 5.0-6.5 | 5.0-5.5 | -0.15 | 110 |
Main Features
Production Flow Chart for Injection Bonded NdFeB
Raw material (Mainly NdFeB powder and binder) preparation---Blending NdFeB powder and binder---Injection molding---Machining---Surface treatment---Magnetizing---Final inspection---Packing---Warehousing
Applications
1. The compression molding magnets, as for simple mould and high magnetic properties, are widely used in stepping motor, CD-ROM spindle motor, general motor, vibrating motor, pick-up, HDD spindle motor, and FDD spindle motor.
2. The injection molding magnets, as for complex mould, magnetic properties around 6 to 7 MGOe, and highly consistency, are widely used in electric expansion valve, air-condition motor etc.
Testing Equipments
Market Share
