bonded ndfeb magnet
Our company specializes in the production of bonded ndfeb magnet, and capable for the complete rotor, stator assembly, according to customer demands and drawings.
Features:
a) Bonded ndfeb magnet is much higher than that of ferrite;
b) Bonded ndfeb magnet due to a shape, dimensional accuracy better than sintered ndfeb;
c) Bonded ndfeb magnet is able to be multi-polar magnetic charged;
d) operating temperature, Tw = 150 Celsius degree;
e) good corrosion resistance;
Production processing:
Grade for bonded ndfeb magnet: BNP-3, BNP-6, BNP-8, BNP-8SR, BNP-9H, BNP-10, BNP-11, BNP-12L
Performance of bonded ndfeb magnet:
Parameter
|
BNP-3
|
BNP-6
|
BNP-8
|
BNP-8SR
|
BNP-9H
|
BNP-10
|
BNP-11
|
BNP-12L
|
Br (mT)
|
450-510
|
590-650
|
620-670
|
620-660
|
650-700
|
680-720
|
700-740
|
730-770
|
Br (Gs)
|
4500-5100
|
5900-6500
|
6200-6700
|
6200-6600
|
6500-4000
|
6800-7200
|
7000-7400
|
7300-7700
|
Hcb（kA/m)
|
199-263
|
302-374
|
390-454
|
405-470
|
421-484
|
413-477
|
430-493
|
366-430
|
Hcb（kOe)
|
2.5-3.3
|
3.8-4.7
|
4.9-5.7
|
5.1-5.9
|
5.3-6.1
|
5.2-6.0
|
5.4-6.2
|
4.6-5.4
|
Hcj （kA/m)
|
477-597
|
597-796
|
636-796
|
955-1114
|
915-1034
|
636-796
|
636-796
|
517-637
|
Hcj（kOe)
|
6.0-7.5
|
7.5-10.0
|
8.0-10.0
|
12.0-14.0
|
11.5-13.0
|
8.0-10.0
|
8.0-10.0
|
6.5-8.0
|
(BH)max (kJ/m 3)
|
24-32
|
44-53.6
|
60-68
|
65.6-72
|
72-80
|
76-84
|
80-88
|
84-92
|
(BH)max (MGOe)
|
3.0-4.0
|
5.5-7.0
|
8.0-9.5
|
8.2-9.0
|
9.0-10.0
|
9.5-10.5
|
10.0-11.0
|
10.5-11.5
|
Tw/ Celsius degree
|
120
|
120
|
120
|
160
|
160
|
120
|
120
|
110
|
demagnetizing curve:
BN8
BN8SR
BN9H
BN10
BN12L
BNI6SR
Widely applications of bonded ndfeb magnet: stepper motors, brushless motors, DC motors, starter motor, DVD spindle motor, CD-ROM drive.
Bonded ndfeb magnets are mainly for the motor.
Motor manufacturers generally use bonded ndfeb magnet for motor, because of low assembly labor costs
Sintered magnet arc are often assembled piece by piece, glued to the rotor or stator
While, for boned ndfeb magnet, workers just only set bonded ndfeb magnet into rotor or stator after adhesive bonding.
So there is no high requirement of power, not only require great speed, then the motor manufacturers will use bonded ndfeb magnet for the high speed motor.
Magnetizing method
Skrew-45°,8 Poles on OD, or oblique magnetized bonded ndfeb magnet
radial 2 poles magnetized bonded ndfeb magnet
radial 6 poles magnetized bonded ndfeb magnet
radial 12 poles magnetized bonded ndfeb magnet
radial 16 poles magnetized bonded ndfeb magnet
radial 24 poles magnetized bonded ndfeb magnet
radial multi poles magnetized bonded ndfeb magnet
radiant magnetized bonded ndfeb magnet
axial magnetizing bonded ndfeb magnet
surface treament:
Processing Name
|
Technology Introduction
|
Scope of application
|
Processing characteristics
|
Electrophoresis
|
By using electrochemical principle, electrophoresis, is currently the most common anti-corrosion surface treatment process of most products
|
Apply to most products surface treatment
|
|
Roll spray
|
Using spray principle, the anti-corrosion coating evenly sprayed on the product surface
|
Specially use to small products whose weight less than 1g, or diameter less than 5mm
|
|
Rust oil
|
the surface of the product uniformly coated layer of rust film, by Dipping method, without changing the dimensions of the case, to improve the rust preventability
|
particularly suitable for small ring product
|
|
Special surface treatment
|
Penetrate specific glue to product to pores, by using Negative pressure method
|
suitable for the products that work in the oil or solvent
|
|
Wave form:
4-Poles Waveform
10-Poles Waveform
44-Poles Waveform
88-Poles Waveform
Bonded factory pictures:
moulding
milling
compressing:
magnetizing:
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