Arc Shape Rare Earth Sintered SmCo Magnet with Countersunk Hole

/Arc Shape Rare Earth Sintered SmCo Magnet with Countersunk Hole
  • Arc Shape Rare Earth Sintered SmCo Magnet with Countersunk Hole
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  • Arc Shape Rare Earth Sintered SmCo Magnet with Countersunk Hole, Samarium Cobalt Segment Tile Magnet For Motors, High Working Temperature Extremely strong rare earth magnets material, Samarium Cobalt magnets (SmCo), Powerful Permanent generator rotor magnet, segment magnets China supplier

    Arc Shape Rare Earth Sintered SmCo Magnet with Countersunk Hole YXG-24H Item No. MPCO-SMOS  series
    Customzied Specific Requirements
    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.

    As part of the rare earth group of permanent magnets, samarium cobalt(SmCo) magnets have very high magnetic properties and temperature properties. Their Curie temperature can be as high as 710 to 880℃, maximum working temperature can be 250 to 350℃, so this kind of magnets have the best magnetic stability. They include rare earth Sm1Co5 and Sm2Co17 and are referred to as 1:5 and 2:17 materials. There’re three different manufacturing processes: sintered SmCo magnet, bonded SmCo magnet, and injection molding SmCo magnet.

    Extremely strong rare earth material SmCo arc magnet with countersunk

    Extremely strong rare earth material SmCo arc magnet with countersunk

    Applications Of Samarium Cobalt Magnets
    Computer disc drives and sensors
    Traveling wave tubes
    Linear actuators and satellite systems
    Motors where temporary stability is vital

    Attributes Of Samarium Cobalt Material
    High resistance to demagnetization
    High energy (magnetic strength is strong for its size)
    Good to moderately high temperature stability
    Pricing for samarium cobalt is market sensitive

    Samarium Cobalt magnets Countersunk SmCo Segemnet

    Samarium Cobalt magnets Countersunk SmCo Segemnet

    Sintered SmCo magnets, i.e. sintered samarium cobalt magnets, are those permanent magnetic materials that based on a hexagonal crystal structure (1:5 type SmCo magnets) or a rhombohedral crystal structure (2:17 type SmCo magnets), and they are manufactured through a powder metallurgy process. They contain two basic elements samarium and cobalt. The samarium element can be substituted by a portion of other rare earth elements including praseodymium (Pr), cerium (Ce), gadolinium (Gd), erbium (Er), etc. The cobalt element can be substituted by a portion of iron (Fe) element to increase the magnets’ saturation magnetization (Ms). In order to control the microstructure and the microchemistry so as to meet required performance, it is also critical to add a small portion of copper (Cu), zirconium (Zr), titanium (Ti), etc. According to crystal structure, samarium cobalt magnets include SmCo5 magnets (1st generation of REPMs) and Sm2Co17 magnets (2nd generation of REPMs). They were invented/developed by K. Strnat’s team in the 1960s and T. Ojima’s team in the 1970s, respectively. Due to their high Curie temperature (Tc: 700-850 ºC), middle high maximum energy product ((BH)max: 110-260 kJ/m3), low temperature coefficients of remanence (α(Br): +0.01 to -0.05 %/°C) and coercivity (β(Hcj): -0.2 to -0.3 %/°C) and high corrosion resistance, sintered SmCo magnets are mainly applied in high temperature motors, servo motors, stepper/stepping motors, traveling wave tubes (TWTs), circulators, isolators, klystrons, undulators, gyroscopes, accelerometers, instruments and meters, etc. Diametrically Magnetized Arc Shaped Sintered Samarium Cobalt Magnet

    Manufacturing – In general, the elements are melted together and milled into a powder that is dry-pressed to shape in the presence of a magnetic field. The material is then sintered, aged, ground to dimension, magnetized and tested. They are called “rare earth” magnets because the elements of samarium cobalt are classified as such in the lanthanides section of the Periodic Table of the Elements.

    Typical Magnetic and Physical Properties of Samarium Cobalt

    Samarium Cobalt Material Density Max. Energy Product
    BH (max)
    Typical Residual Induction Br (max) Coercive Force Hc (min) Intrinsic Coercive Force (Hci) Maximum Operating Temperature Curie Temperature
      lbs/in3 g/cm3 MGO Gauss Oersteds Oersteds
    SmCo 18 0.296 8.2 16 – 18 8700 ≥8100 ≥16000 482 250 1382 750
    SmCo 20 0.296 8.2 19 – 21 9200 ≥8500 ≥16000 482 250 1382 750
    SmCo 22 0.299 8.3 20 – 22 9500 ≥8900 ≥16000 482 250 1382 750
    SmCo 24 0.304 8.4 22 – 24 9900 ≥9100 ≥18000 662 350 1508 820
    SmCo 26 0.304 8.4 24 – 26 10400 ≥9400 ≥18000 662 350 1508 820
    SmCo 28 0.303 8.4 26 – 28 10700 ≥9500 ≥18000 662 350 1508 820
    SmCo 30 0.303 8.4 28 – 30 11000 ≥9900 ≥18000 662 350 1508 820
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