Epoxy Polymer Bonded Samarium Cobalt Rare Earth Magnets

/Epoxy Polymer Bonded Samarium Cobalt Rare Earth Magnets
  • Epoxy Polymer Bonded Samarium Cobalt Rare Earth Magnets
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  • We are A Professional Permanent Magnets & Magnetic Assemblies Company Operating Since 2004
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  • Epoxy Polymer Bonded Samarium Cobalt Rare Earth Magnets, Compression & Injection Mold Bonded SmCo Magnet, anisotropic & isotropic bonding SmCo5 / Sm2Co17 permanent magnets, Plastic Epoxy Polymer Hot Pressed Bonded Samarium Cobalt Magnets China Supplier

    Epoxy Polymer Bonded Samarium Cobalt Rare Earth Magnets Feature:
    Part No.:  MPCO-BCSM series
    Type: Permanent
    Composite: Compression & Injection Samarium Cobalt Magnet (Rare Earth SmCo)
    Size / Shape: Customized design drawing
    Application: Motors, Devices, Printers, Sensors, CD/DVD ROM and so on.
    Packing: cartons / pallets
    Delivery Date: 10-18 days
    Place of Origin: Zhejiang, China (Mainland)

    Bonded Samarium Cobalt is the highest grade of material that can either be made by using nylon 12 or compression molded using epoxy. It was developed by Seiko Epson Corporation and can be made radial up to 15 Mgoe, cross field up to 17 Mgoe, and axially by similar method for 15 Mgoe. Typically used in high quality stepping motors, this material has been in the market place for over 20 years and MPCO has yet to have a reject of any kind.

    Epoxy Polymer Bonded Rare Earth SmCo Magnets

    Epoxy Polymer Bonded Rare Earth SmCo Magnets

    Samarium Cobalt Compression Bonded Magnets are one of the newest types of magnetic materials and are made by compressing an epoxy coated SmCo magnet powder into a final shape and then heat treating it. The result is a high density material which produces a higher magnetic output than by injection molding. Although compression molding provides greater flexibility in geometry shape and size, they do not provide the range of complex geometries which can be achieved by injection molding. The following tables list common grades, however custom grades can be made depending on customers’ requirements. Compression Bonded SmCo Magnets

    Compression bonded magnets are available using many isotropic neodymium iron boron material grades as well as crushed & powdered samarium cobalt materials. Combinations of different material grades may also be used to create specific magnetic characteristics. Compression bonded SmCo magnets offers higher magnetic strength than injection molded SmCo magnets due to their higher magnetic particle density, but are limited to simpler geometries. The epoxy binder used is resistant to normal industrial solvent and automotive fluids. To reduce corrosion of the rare earth magnetic materials, they are further coated with epoxy after shaping. The normal application temperatures range from below -40°C to above 165°C. Hot Pressed Injection Bonded SmCo Magnets

    Anisotropic Bonded Compression Samarium Cobalt Ring Magnets

    Anisotropic Bonded Compression Samarium Cobalt Ring Magnets

    Compression bonding is most appropriate for relatively simple geometries due to limitations of the compaction process. The tooling costs for compression bonding is comparatively low, making it a better choice than injection molding where volumes are small. However, with modest automation, compression bonding can also be adopted for high volume manufacturing, with volumes upto millions of pieces per year. Anisotropic Bonded Rare Earth SmCo Magnets

    MPCO offers both compression bonded 1:5, and 2:17 SmCo magnets. They have lower energy products than sintered SmCo – currently in the range of 4.0 to 10.0 MGOe.
    Polymer samarium cobalt magnets with SmCo magnetic powder mixed with polymer materials, compressing through the shaped die, various shapes of high dimensional accuracy can be produced, requiring no further finish machining. Due to excellent corrosion resistance, coating is not required.

    Magnetic
    Properties
    Remanence Coercive
    Force
    Intrinsic
    Coercivity
    Energy
    Product
    Br Hc Hci (BH)max
    kGs mT kOe kA/m kOe kA/m MGOe kJ/m
    BCS-4 3.8-4.2 380-420 2.5-3.5 200-280 8.0-13.0 640-1030 3.5-4.5 28-36
    BCS-5 4.1-5.4 410-540 3.3-4.5 265-360 8.0-15.0 640-1200 4.5-5.5 36-44
    BCS-9 6.1-6.6 610-660 5.2-6.0 415-480 8.0-15.0 640-1200 8.5-9.5 68-76
    BCS-11 6.4-7.2 640-720 5.4-6.4 430-510 8.0-15.0 640-1200 9.5-11.0 76-88

     

    Temperature
    Properties
    Reversible Temperature
    Coefficient
    Max Working Temp. Curie Temperature
    %/°C Tmax Tc
     Bd Hd °C °C
    BCS-4 -0.035 -0.29 150 700
    BCS-5 -0.035 -0.29 150 700
    BCS-9 -0.035 -0.29 150 700
    BCS-11 -0.035 -0.29 150 700

     

    Physical
    Properties
    Density Hardness Compressive Strength Young’s Modulus Electrical
    g/cm3 R Mpa Mpa Ohm-cm
    BCS-4 6.4-7.0 80-125 30-32 29000 0.04
    BCS-5 6.5-7.0 80-125 30-32 29000 0.04
    BCS-9 6.6-7.1 80-125 30-32 29000 0.04
    BCS-11 6.7-7.2 80-125 30-32 29000 0.04