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Silicon nitride grading wheel

  • Finished product characteristics

    ● High temperature resistance ● Heat shock resistance ● High hardness ● High strength ● Low density ● Low coefficient of thermal expansion● Corrosion resistance ● High wear resistance ● Good insulation performance ● High toughness ● High efficiency ● Long service life

  • Product characteristics

    Adopting highly dispersed and homogeneous high-purity silicon nitride powder, forming and sintering silicon nitride blanks with consistent density, precision machining and forming. To prevent metal pollution, the specific gravity is smaller than that of zirconia ceramics, reducing motor energy consumption, and obtaining finer particles at low cost..

  • precision machining

    1. Self developed and self prepared silicon nitride powder

    2. Dry pressing and isostatic pressing forming

    3. Gas pressure sintering

    4. Precision machining: flat grinding, outer diameter/inner diameter grinding, precision machining, grinding, polishing and grinding

    5. Strict testing

  • application area

    ● Air flow crusher, etc

    • Name/Characteristics alumina Zirconia silicon nitride Aluminum nitride silicon carbide boron nitride
    appearance White or milky white or ivory ivory dark gray brown black white
    density 3.9 6.05 3.2 3.3 3.15 2.3
    permittivity 10 30 11 8 9.6 3.1
    Thermal conductivity W/mk 20~37 5-8 90-130 90~230 25-40 33
    Thermal expansion coefficient(Negative sixth power of ten/K) 4.5~8
    (Negative sixth power of ten/K)    		 8~11.5
    (Negative sixth power of ten/K)    		 3.2
    (Negative sixth power of ten/K)    		 4.5
    (Negative sixth power of ten/K)    		 4.8-5.2
    (Negative sixth power of ten/K)    		 15
    (Negative sixth power of ten/K)
    Elastic modulus(Gpa) 380 210 300~320 320 400~420 *
    Poisson's ratio 0.27 0.3 0.26 0.25 0.19 *
    High temperature resistance 500°~1700° 500°~1700° 800°~1300° 1700° 1700° 2200°
    Acid and alkali corrosion resistance strong strong strong strong strong same as
    magnetism not have not have not have not have not have not have
    dimensional stability Little change with temperature Little change with temperature Little change with temperature Little change with temperature Little change with temperature Little change with temperature
    thermal shock resistance△T.℃ 200 400 800 400 600 *
    Operating centrifugal force medium more small small small small
    Customized process
    • 1

      By product

      Application requirement

    • 2

      Design and research

      Optimization scheme

    • 3

      Strict essence

      Precision drawing

    • 4

      piggyback

      Select ingredients

    • 5

      Multiple forming

      Fired blank

    • 6

      Grinding and polishing

      Precision machining

    • 7

      Multiple gage

      Professional survey

    • 8

      Qualified product

      Package and ship

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