PVC Coating 300GS To1500GS Small Squares Rubber Ferrite Magnets
Rubber Ferrite Magnets For Elevator
Compared with other permanent magnets such as neodymium magnets,
samarium cobalt magnets and alnico magnets, ferrite magnets are
hard and brittle, with lower magnetic energy. However, they are not
easy to demagnetize and corrode, and the production process is
simple and inexpensive. Therefore, ferrite magnets have the highest
output in the whole magnet industry and are widely used in
industrial production.
Introduction of Ferrite Magnets
The raw materials of ferrite magnets are mainly strontium oxide or
barium oxide and iron trioxide (in some specific high grades other
chemical components such as cobalt (Co) and lanthanum (La) are
added to improve their magnetic properties). They are mainly used
in speakers, headphones, motors and various instruments.
Product grade list
| Product standards Of Flexible Ferrite Magnet | | |
| Version | 2020-02-v03 |
| 页 码 | 1-1 |
| | | | | | | | | | |
| Magnetic Properties |
| Material Type | MGT-RF1 | MGT-RF1.6 | MGT-RF2 | | | | | |
| Br | Gs | 1600±200 | 2400±200 | 3000±500 | | | | | |
|
| mT | 160±20 | 240±20 | 300±50 | | | | | |
|
| Hcb | Oe | 1300±200 | 1750±200 | 2000±500 | | | | | |
|
| kA/m | 100±20 | 150±20 | 159±40 | | | | | |
|
| Hcj | Oe | 1600±200 | 2600±200 | 3000±1000 | | | | | |
|
| kA/m | 130±20 | 210±30 | 239±80 | | | | | |
|
| (BH)max | MGOe | 0.7±0.5 | 1.5±0.5 | 2±0.5 | | | | | |
|
| kJ/m3 | 5±1 | 12±1 | 16±4 | | | | | |
|
| Flux Irreversible Loss | % | ＜5 | ＜5 | ＜5 | | | | | |
|
|
| (αBr) | %/℃ | -0.11 | -0.11 | -0.11 | | | | | |
| Temperature Coefficient of Br |
|
| Max Operating Temp | ℃ | 85 | 85 | 85 | | | | | |
|
| | | | | | | | | | |
| Physical Properties |
| Density | g/cm3 | 3.6-4.0 | 3.8-4.0 | 3.8-4.2 | | | | | |
| Hardess | Shore D | 30-70 |
| Tensile Strength | Mpa | >3.5 |
| Elongation | % | 20-90 |
| | | | | | | | | | |
| Size Range |
| Thickness(mm) | Range | 0.2-0.3 | 0.4-1.0 | 1.1-2.0 | 2.1-3 | ≥3.1 | Remark:This data is only applicable to the general situation, and
the specific product is determined according to the delivery
specifications |
| Tolerance | ±0.03 | ±0.05 | ±0.07 | ±0.1 | ±0.15 |
| Width (mm) | Range | 1-30 | 31-100 | 101-200 | 201-400 | 401-450 |
| Tolerance | ±0.1 | ±0.15 | ±0.3 | ±0.5 | ±1 |
| Length (mm) | Range | 1-30 | 31-100 | 101-200 | 201-400 | ≥401 |
| Tolerance | ±0.1 | ±0.15 | ±0.3 | ±0.5 | 1-5 |
| Technical information can be change without furture notice |
Classification of Ferrite Magnets
According to the different production processes, ferrite magnets
can be divided into sintered ferrite and bonded ferrite. Among
them, sintered ferrites can be divided into dry pressed ferrites
and wet pressed ferrites, and bonded ferrites can be divided into
extruded ferrite, pressed ferrite and injection molded ferrite.
Ferrite magnets can be divided into isotropic permanent magnets and
anisotropic permanent magnets according to whether an external
magnetic field is applied during molding. Isotropic sintered
ferrite permanent magnets are weakly magnetic, but can be
magnetized in different directions of the magnet. Anisotropic
ferrite permanent magnets are very magnetic but can only be
magnetized in the intended magnetization direction of the magnet.
Soft, flexible, twistable magnets made from bonded ferrite powder
and synthetic rubber are also called rubber magnets.
Performance and characteristics of ferrite magnets
1, Ferrite permanent magnets are characterized by high coercivity
and low remanence in performance. Ferrite permanent magnets have a
high coercivity and strong resistance to demagnetization. They are
suitable for working in dynamic magnetic circuit environments with
large temperature variations.
2 ,Ferrite permanent magnets are hard and brittle, and can be cut
with diamond tools.
3,The main raw material of ferrite permanent magnets is oxide,
which is not easy to be corroded and generally does not need
electroplating.
4,The working temperature of ferrite permanent magnets is generally
in the range of -40℃ to +300℃.
