| ANISOTROPIC WET TYPE FERRITE MAGNETS |
| (I) Introduction: |
| Anisotropic type magnets are sintered permanent magnets composed of strontium ferrite and are pressed in a magnetic field for a preferred direction They have only in this preferred direction good magnetic properties and can be magnetized only in this direction. At the same magnetic volume a higher magnetic flux is obtained than with isotropic magnets. They also exist in two types (dry and wet type.) A dry pressed magnets is formed by molding into the desired shape.A wet press magnet is formed by slowly molding mud-like impalpable into the desired shape. |
| (I) TYPICAL MAGNETIC PROPERTIES ON FERRITE MAGNET: |
|
Remanence |
Coercivity |
Maximum |
|||||
Br |
bHc |
iHc |
(BH)max |
|||||
G |
mT |
Oe |
kA/m |
Oe |
kAm |
MGOe |
kj/m3 |
|
| Typical | 3950 |
395 |
3000 |
240 |
3100 |
248 |
3.7 |
29.5 |
| Minimum | 3850 |
385 |
2750 |
220 |
2850 |
228 |
3.5 |
27.8 |
|
Remanence |
Coercivity |
Maximum |
|||||
Br |
bHc |
iHc |
(BH)max |
|||||
G |
mT |
Oe |
kA/m |
Oe |
kAm |
MGOe |
kj/m3 |
|
| Typical | 4100 |
410 |
3000 |
240 |
3100 |
248 |
4.0 |
31.8 |
| Minimum | 4000 |
400 |
2750 |
220 |
2850 |
228 |
3.8 |
30.2 |
|
Remanence |
Coercivity |
Maximum |
|||||
Br |
bHc |
iHc |
(BH)max |
|||||
G |
mT |
Oe |
kA/m |
Oe |
kAm |
MGOe |
kj/m3 |
|
| Typical | 4100 |
410 |
3350 |
268 |
3500 |
280 |
4.1 |
32.6 |
| Minimum | 4000 |
400 |
3150 |
252 |
3250 |
260 |
3.9 |
31.0 |
|
Remanence |
Coercivity |
Maximum |
|||||
Br |
bHc |
iHc |
(BH)max |
|||||
G |
mT |
Oe |
kA/m |
Oe |
kAm |
MGOe |
kj/m3 |
|
| Typical | 4000 |
400 |
3600 |
288 |
3850 |
307 |
3.8 |
30.2 |
| Minimum | 3900 |
390 |
3350 |
268 |
3600 |
288 |
3.6 |
28.6 |
|
Remanence |
Coercivity |
Maximum |
|||||
Br |
bHc |
iHc |
(BH)max |
|||||
G |
mT |
Oe |
kA/m |
Oe |
kAm |
MGOe |
kj/m3 |
|
| Typical | 3500 |
350 |
3600 |
288 |
4700 |
375 |
3.2 |
25.5 |
| Minimum | 3400 |
340 |
3350 |
268 |
4450 |
355 |
3.0 |
23.9 |
| Applications of typical items in industry | |
| Application for Catches, motor, etc, ..... Application for Separator, Cutting purpose Application for Speaker, Magnetrons, etc.... Application for Cat Motor / Tool Motor |
 |
ATLAS MAGTECH LTD. |
 |
Unit 18, 23, 7/F Goldfield Industrial Centre, No. 1, Sui Wo Road, Fo Tan, Shatin, N.T. |
|
Tel: (852) 2662 7028 Fax: (852) 2662 7029 |
|
Copyright 2004, All rights reserved. |