Bonded NdFeB magnet is produced by molding compression of the compound NdFeB alloy powder with epoxy resin, also it can be made by injection or extrusion from NdFeB alloy powder mixed with plastic.

Bonded NdFeB Magnet

Bonded NdFeB Magnet

The characteristics are as follows:

1、Higher Magnet Property: the magnet property of bonded NdFeB magnet is between that of sintered NdFeB and ferrite, and with good consistency and stability.

2、Large Freeness of Product Shapes and High Precision of Dimension: the magnet shape and dimension are decided by the tooling, like ring, segment, block, etc., without further sintering and mechanical machining processes.

3、Good Corrosion Resistance: after electrodeposited or through other special treatments, it can be used under normal or unfavorable environment conditions for a long time.

4、Diverse magnetization: Multi-pole magnetization and screw angle magnetization are available, and the field distribution could be square, sinusoid and so on.

5、It has high production efficiency, suitable for mass production.The bonded NdFeB magnet is mainly used for all kinds of micro–miniature motors, such as spindle motor, stepping motor, synchronous motor, DC motor and brushless DC motor. It can replace sintered NdFeB magnet and ferrite, making motor assembling simpler and more reliable, reducing costs and improving efficiency.


 

粘结压制成型NdFeB磁性能和物理特性
MAGNETIC CHARACTERISTICS AND PHYSICAL PROPERTIES OF BONDED COMPRESSION MOULDING  NdFeB
性能

Grade

BNP-6 BNP-8 BNP-10 BNP-12 BNP-8H
剩磁感应强度

Br T

0.52-0.60 0.60-0.65 0.65-0.70 0.70-0.76 0.55-0.62
矫顽力

bHc KA/m(KOe)

304-360 360-440 360-464 424-480 400-480
(3.8-4.5) (4.5-5.5) (4.5-5.8) (5.3-6.0) (5.0-6.0)
内禀矫顽力

IHc KA/m(KOe)

640-800 640-960 640-960 640-880 960-1280
(8.0-10.0) (8.0-12.0) (8.0-12.0) (8.0-11.0) (12.0-16.0)
最大磁能积

BHmax KJ/m3(MGOe)

40-56 56-72 72-80 80-96 48-72
(5-7) (7-9) (9-10) (10-12) (6-9)
密度

Density g/cm3

5.3-5.8 5.6-6.0 5.8-6.1 6.0-6.2 5.6-6.0
可逆磁导率

Recoil Permeability  m

1.15 1.15 1.22 1.22 1.15
可逆温度系数

α Br  %/℃

-0.13 -0.13 -0.07~-0.11 -0.13 -0.07~-0.13
工作温度

Working Temp.℃

140 140 120 130 120
粘结注射成型Nd-Fe-B磁性能和物理特性
MAGNETIC CHARACTERISTICS AND PHYSICAL PROPERTIES OF BONDED INJECTION MOULDING  NdFeB
性能     Grade BNI-2 BNI-4 BNI-6 BNI-8 BNI-6H
剩磁感应强度    Br T 0.20-0.40 0.40-0.49 0.49-0.57 0.57-0.63 0.48-0.56
矫顽力 bHc KA/m(KOe) 120-240 240-310 310-380 380-430 330-400
(1.5-3.0) (3.0-4.0) (4.0-4.8) (4.8-5.4) (4.2-5.0)
内禀矫顽力 iHc KA/m(KOe) 560-720 570-730 635-796 676-835 1035-1353
(7.0-9.0) (7.2-9.2) (8.0-10.0) (8.5-10.5) (13.0-17.0)
最大磁能积

BHmax KJ/m3(MGOe)

6.4-24 28-36 42-56 59-67 40-52
(0.80-3.0) (3.5-4.5) (5.2-7.0) (7.4-8.4) (5.0-6.5)
密度Density g/cm3 3.5-4.0 4.0-5.0 5.0-5.5 5.0-5.5 5.0-5.5
可逆磁导率

Recoil Permeability m

1.25 1.2 1.2 1.2 1.13
可逆温度系数

α Br %/℃

-0.15 -0.1 -0.1 -0.1 -0.15
工作温度

Working Temp.   ℃

130 130 110 120 110