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Products
List -- Flexible Magnet |
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Flexible Magnets for Micro-Motor 
Flexible Magnets for Micro-Motor are thermoplastic permanent ferrite magnets with Enjoying characteristics of satisfactory magnetic property , mechanic property , chemical corrosion resisting
Property ,strict size precision and good consistency , it is widely used in motors of TV antenna ,CD player , VCD player and tape rewinder , etc.
PHYSICAL&MAGNETIC PROPERTIES OF FLEXIBLE MAGNETS FOR MICRO-MOTORS |
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BWZY-4C |
BWZY-4N |
Magneticproperty
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Residual induction Br(T) |
0.24-0.25 |
0.23-0.25 |
Coercive force Hcb(kA/m) |
159-183 |
159-183 |
Intrinsic coercive force Hcj(kA/m) |
>=200 |
>=239 |
Maximum energy product(BH)max(kJ/m3) |
11.1-11.9 |
10.7-11.9 |
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Adhesive agent components |
Chlorinated polyethylene |
Butyronitrile rubber |
Appearance |
The face:clean and polish on polish ;no bubble ;no scuffing ;
Upper and below edge is vertical ; fracture is smooth. |
Tolerance |
Length +0.2mm width +0.1mm thickness +0.05(or according to the contract requirement) |
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Physical
property |
Tensile strength(Mpa) |
>=7 |
>=7 |
Elongation rate(%) |
>=100 |
>=100 |
Hardness(SHA) |
>=88 |
>=86 |
Density(g/cm3) |
3.6-3.7 |
3.6-3.7 |
Temperature(oC) |
-40-100 |
-40-100 |
Winding character |
Contract value |
Thermal expansion coefficient |
28 x 10-5/oC |
Corrosion
Resisting
Property
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10%HCI |
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20%HCI |
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10%H2SO4 |
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20%H2SO4 |
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absolute ethly alcohol |
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methylbenzene |
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gasoline |
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benzene |
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acetone |
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28% ammonia water |
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engine oil |
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