Epoxy Coating Compression Molding Bonded Samarium Cobalt

/Epoxy Coating Compression Molding Bonded Samarium Cobalt
  • Epoxy Coating Compression Molding Bonded Samarium Cobalt
Primary Competitive Advantages:
  • We are A Professional Permanent Magnets & Magnetic Assemblies Company Operating Since 2004
  • All Magnetic Grade for Sintered & Bonded Magnets
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  • Epoxy Coating Compression Molding Bonded Samarium Cobalt, Compression & Injection Molding Bonded SmCo Magnet, anisotropic & isotropic bonding SmCo5 / Sm2Co17 permanent magnets, Plastic Epoxy Polymer Hot Pressed Bonded Samarium Cobalt Magnets China Supplier

    Epoxy Coating Compression Molding Bonded Samarium Cobalt 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)

    Samarium Cobalt Bonded Magnets that utilize injection molding processes can be made by combining SmCo powders with Nylon 6, Nylon 12 or PPS resins. The ratios between magnetic powders and resins are endless, therefore many grades exist depending on magnetic performance, temperature resistance, and mechanical strength. These materials can be molded directly over or into another polymer or metal component. The shapes and sizes are endless, as are the magnetization patterns that can be achieved either in the molding tool or by utilizing a magnetizing fixture. The following tables list several common grades, however we have the capability to formulate any desired grade of magnetic material based on customer specified parameters.

    Compression Molding Bonded Samarium Cobalt

    Compression Molding Bonded Samarium Cobalt

    1.Computer and office automation: HDD, CD, DVD – ROM spindle motor, printers, fax stepping motor, etc.
    2.The automobile field: Permanent magnet start motor, direction booster motor, automatic car motor, sit chair adjusted motor, speed sensors, etc.
    3.Household appliances: Watch, air conditioning stepping motor, camera, camera driving motor, etc.

    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. Epoxy Polymer Bonded Samarium Cobalt Rare Earth Magnets
    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. Polymer Bonded Rare Earth Compression Molding SmCo Magnets

    Polymer SmCo Bonded Compression Molding Magnets

    Polymer SmCo Bonded Compression Molding Magnets

    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.

    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

    Remanence Coercive
    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


    Reversible Temperature
    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


    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