| Application: | Industrial Magnet |
|---|---|
| Composite: | NdFeB Magnet |
| Type: | Permanent |
| Brand Name: | ASTROMAGNET |
| Place of Origin: | China (Mainland) |
Quick Details
Specifications
Known as the Third Generation of Rare Earth Magnets , Sintered Neodymium-Iron -Boron (NdFeB ) magnets
are the most powerful and advanced commercialized permanentmagnets today . With far better permanent
magnetic performances compared withtraditional magnets , sintered Nd-Fe-B magnets are becoming
the key functional materials for traditional and modern industry.
Some typical applications : Speakers , Magnetic Separators, Magnetic resonance imaging , Sensors ,
Brushless Motors , VCM (VoiceCoil Motor ),Magnetic Couplings , Tape Recorders ,Biasing Application ,
Linear Actuators, etc .
Main features :
1) Chemical composition : Nd2Fe14B .
Hard , brittle and easily corrosive.
2) Moderate temperature stability
Neodymium magnets lose -0.09 ~- 0.13 % of Br /oC.The Max WorkingTemperature can be up to 200oC.
3) Excellent strength value
The highest (BH)max reaches up to 52 MGOe.
4) Extremely good resistance to demagnetization with Hcj
The intrinsic coercive -Hcj is up to 30 KOe .
5) Demagnetization Curve with good rectangularity .
Magnetic polarization strength is almost invariable in a wild range of demagnetizing filed. Shown in
rectangular coordinates , the B-H demagnetization Curve is a straight line in the second quadrant and
extending to the third quadrant.
6) Low eddy current loss
Higher resistivity than Sm-Co magnets , let alone ordinary metallic materials. In alternating magnetic field
such as that in the Motor , magnets have lower eddy current loss , so devices work with less heat and
lower temperature rise.
7) Effective surface treatment to prevent corrosion
To improve the anti-corrosion level , surface treatment is recommended.
Some opitional coatings : Zn , Ni-Cu-Ni ,Epoxy , Silver , Gold , etc.
8) Favorable mechanical properties , relatively easy to machine.
Customized ones are also available as per the protype drawings.
are the most powerful and advanced commercialized permanentmagnets today . With far better permanent
magnetic performances compared withtraditional magnets , sintered Nd-Fe-B magnets are becoming
the key functional materials for traditional and modern industry.
Some typical applications : Speakers , Magnetic Separators, Magnetic resonance imaging , Sensors ,
Brushless Motors , VCM (VoiceCoil Motor ),Magnetic Couplings , Tape Recorders ,Biasing Application ,
Linear Actuators, etc .
Main features :
1) Chemical composition : Nd2Fe14B .
Hard , brittle and easily corrosive.
2) Moderate temperature stability
Neodymium magnets lose -0.09 ~- 0.13 % of Br /oC.The Max WorkingTemperature can be up to 200oC.
3) Excellent strength value
The highest (BH)max reaches up to 52 MGOe.
4) Extremely good resistance to demagnetization with Hcj
The intrinsic coercive -Hcj is up to 30 KOe .
5) Demagnetization Curve with good rectangularity .
Magnetic polarization strength is almost invariable in a wild range of demagnetizing filed. Shown in
rectangular coordinates , the B-H demagnetization Curve is a straight line in the second quadrant and
extending to the third quadrant.
6) Low eddy current loss
Higher resistivity than Sm-Co magnets , let alone ordinary metallic materials. In alternating magnetic field
such as that in the Motor , magnets have lower eddy current loss , so devices work with less heat and
lower temperature rise.
7) Effective surface treatment to prevent corrosion
To improve the anti-corrosion level , surface treatment is recommended.
Some opitional coatings : Zn , Ni-Cu-Ni ,Epoxy , Silver , Gold , etc.
8) Favorable mechanical properties , relatively easy to machine.
Customized ones are also available as per the protype drawings.

