Laminated Samarium Cobalt Magnets for Eddy Current Losses

/Laminated Samarium Cobalt Magnets for Eddy Current Losses
  • Laminated Samarium Cobalt Magnets for Eddy Current Losses
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  • Laminated Samarium Cobalt Magnets for Eddy Current Losses, Segmentation Laminated Magnet SmCo Steel Assembly, Lamination Rare Earth SmCo Magnet for Motors, Segment Laminated Permanent Magnets Offer the Thinnest Insulating Layers & Lowest Eddy Current Losses for Optimal Efficiency

    Laminated Samarium Cobalt Magnets for Eddy Current Losses Item No. MPCO-LAMS  series

    Customzied Specific Requirements
    Know as Lamination Magnetic Core
    OEM or ODM service: Accept
    Dimension: Customized size
    Custom Grade: SmCo5,  Sm2Co17
    Magnetization direction: Thickness, Length, Axially, Diametre, Radially, Multipolar
    Surface Treatment: UNCOATED, Silver, Gold, Zinc, Ni-cu-Ni. Epoxy etc.
    Tolerance: +/-0.02 – 0.05mm
    Application: SmCo rare earth permanent magnets are widely applied in Auto, energy-efficient Motors and Generators, Machinery, Audio/Video and Communication Equipment, Medical Device(MRI), Office Automation, Magnetic Separator, etc.

    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.

    What is the Advantages of Laminated Magnet?
    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.

    The fewer the eddy current loss becomes, the lower the heat generates to enhance higher efficiency. Nowadays the demand of laminated rare earth magnets has been going up, because aerospace, industrial markets and promising especially are dedicating to pursuing the balance between motor power and heat.  Custom Drawing Design Block Insulated Magnet Thanks to knowledge in electric motor and extensive experience in laminated magnets, Horizon can work with customers to improve motor performance through ensuring laminated magnets with following characteristics:

    Stable working at temperature up to 200˚C
    Consistency of insulation guaranteed
    Insulation layer ranging 25 -100 μm
    Magnet layer with thickness from 0.5mm and up in a wide of shapes like block, loaf, segment and wedge
    Magnet material in SmCo or Neodymium

    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. Black Epoxy Coated Laminated Magnet Assembly

    Magnet segmentation technology is a very practical way to make high-resistivity magnet without changing the composition of the magnet.

    What is Eddy Current Losses laminated magnet

    The consumption of motor is the greatest among the rotating machinery. The eddy current losses are one of the worst enemies to high-speed rare earth permanent magnet motor. The eddy current will give rise to the temperature of the rare earth permanent magnet, then the magnet will be demagnetized, therefore influence the work efficiency of the motor. As the metallic material, the rare earth permanent magnet has lower electrical resistance, and it also become the direct source of eddy current losses.

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