Segment Rare Earth SmCo Motor Magnet Item NO. MPCO-SCS series
Material: Samarium Cobalt
Shape: segment, arc, tile
Grade:Smco5,Sm2Co17 etc.
Magnetic properties:Hcj,Hcb,BH,Br,BHmax,working temperature.
Application:widely used in sensor,speakers,reed switches,motor,rotor,wind turbines/generators,AC/DC motors,drive motors,servo motors etc.
Magnetization directions:by Axial or by radial.
How to reduce eddy current losses of rare earth magnet?
The eddy current loss of rare earth magnet can be reduced by many ways, among them, the material science researchers have proposed to prepare the high-resistivity magnet, such as:
a. Bonded magnet.
b. High-resistivity sintered magnet.
Due to the existence of binder, the electrical resistance of the bonded magnet would be 102 to 104 times more than simple sintered magnet, but the motor power and maximum operating temperate will be limited. For sintered magnet, submicron fluoride will be served as additive to enhance the grain boundary electrical resistance. Fluoride will help magnet to form a high resistivity layer on its grain boundary, thus improve the electrical resistivity of the whole material. rare earth smco sgment magnets, Magnet segmentation technology is a very practical way to make high-resistivity magnet without changing the composition of the magnet. SmCo Motor Magnet
What is magnet segmentation technique?
The magnet made by segmentation technology can be called laminated magnet, layered magnet, split magnet and segmented magnet. For magnet segmentation technology, the whole magnet will be segmented into several pieces, then processed into specific shape and dimension after glued together by special isolation glue.
According to many simulation cases and actual products, the magnet segmentation technique has excellent performance to prevent the eddy current. With the increase of segment, the eddy current losses of permanent magnet significantly decreased. Magnet segmentation technique has been already applied in the NdFeB and SmCo magnet.
Materials | Grade | Remanent Flux Density Br | Coercivity Hcb | Intrinsic Coercivity Hcj | Max. Energy Product (BH)max | Curie Temperature Tc | Density ρ | Temperature Coefficient △Bd/Bd | Linear Expansion Coefficient | Webster Hardness | |
Unit | T (kGs) | kA/m (kOe) | kA/m (kOe) | kJ/m3 (MGOe) | ℃ | g/cm3 | %℃ | C⊥ （1℃） | C// （1℃） | Hv | |
1:5 SmCo5 | XGS18 | 0.8～0.9 (8.0～9.0) | 600～700 (7.5～8.8) | ≥1194 （≥15） | 143±16 （18±2） | 750～800 | 8.2～8.4 | -0.05 | 13×10-6 | 6×10-6 | 450～500 |
XGS18G | 0.8～0.9 (8.0～9.0) | 600～700 (7.5～8.8) | ≥1592 （≥20） | 143±16 （18±2） | 750～800 | 8.2～8.4 | -0.05 | 13×10-6 | 8×10-6 | 450～500 | |
XGS20 | 0.90～0.95 (9.0～9.5) | 676～740 (8.5～9.3) | ≥1194 （≥15） | 159±16 （20±2） | 750～800 | 8.2～8.4 | -0.05 | 13×10-6 | 6×10-6 | 450～500 | |
XGS20G | 0.90～0.95 (9.0～9.5) | 676～740 (8.5～9.3) | ≥1592 （≥20） | 159±16 （20±2） | 750～800 | 8.2～8.4 | -0.05 | 13×10-6 | 8×10-6 | 450～500 | |
XGS22 | 0.94～1.00 (9.4～10.0) | 700～748 (8.8～9.4) | ≥1194 （≥15） | 175±16 （22±2） | 750～800 | 8.2～8.4 | -0.05 | 13×10-6 | 6×10-6 | 450～500 | |
XGS22G | 0.94～1.00 (9.4～10.0) | 700～748 (8.8～9.4) | ≥1592 （≥20） | 175±16 （22±2） | 750～800 | 8.2～8.4 | -0.05 | 13×10-6 | 6×10-6 | 450～500 | |
2:17 Sm2Co17 | XGS26L | 1.0～1.08 (10.0～10.8) | 477～577 (6.0～7.0) | 493～716 (6.2～9.0) | 206±16 （26±2） | 800～850 | 8.3～8.5 | -0.03 | 11×10-6 | 8×10-6 | 500～600 |
XGS26H | 1.0～1.08 (10.0～10.8) | 716～812 (9.0～10.2) | ≥1592 （≥20） | 206±16 （26±2） | 800～850 | 8.3～8.5 | -0.03 | 11×10-6 | 8×10-6 | 500～600 | |
XGS26U | 1.0～1.08 (10.0～10.8) | 716～812 (9.0～10.2) | ≥1990 （≥25） | 206±16 （26±2） | 800～850 | 8.3～8.5 | -0.03 | 11×10-6 | 8×10-6 | 500～600 | |
XGS28L | 1.06～1.10 (10.6～11.0) | 557～756 (7.0～9.5) | 636～955 (8.0～12.0) | 223±16 （28±2） | 800～850 | 8.3～8.5 | -0.03 | 11×10-6 | 8×10-6 | 500～600 | |
XGS28H | 1.06～1.10 (10.6～11.0) | 756～836 (9.5～10.5) | ≥1592 （≥20） | 223±16 （28±2） | 800～850 | 8.3～8.5 | -0.03 | 11×10-6 | 8×10-6 | 500～600 | |
XGS28U | 1.06～1.10 (10.6～11.0) | 756～836 (9.5～10.5) | ≥1990 （≥25） | 223±16 （28±2） | 800～850 | 8.3～8.5 | -0.03 | 11×10-6 | 8×10-6 | 500～600 | |
XGS30L | 1.08～1.15 (10.8～11.5) | 557～796 (7.0～10.0) | 636～955 (8.0～12.0) | 229±16 （30±2） | 800～850 | 8.3～8.5 | -0.03 | 11×10-6 | 8×10-6 | 500～600 | |
XGS30U | 1.08～1.12 (10.8～11.2) | 796～836 (10.0～10.5) | ≥1990 （≥25） | 239±16 （30±2） | 800～850 | 8.3～8.5 | -0.03 | 11×10-6 | 8×10-6 | 500～600 | |
XGS32 | ≥1.12 （≥11.2） | ≥557 （≥7.0） | ≥637 （≥7.0） | ≥239 （≥30） | 800～850 | 8.3～8.5 | -0.03 | 11×10-6 | 8×10-6 | 500～600 | |
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