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Silicon nitride plunger

  • 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; High toughness; High efficiency; Long service life

  • Product characteristics

    The service life of silicon nitride ceramic plungers is 7-12 times longer than that of metal plungers. The core component of a plunger pump, used to replace a metal plunger. Reduce usage and replacement costs in harsh environments.

  • 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

    ● New energy ● Medical ● Bearings ● Electric power ● Petroleum ● Chemical engineering ● High temperature cutting tools ● Mechanical wear resistance ● Aerospace ● Military industry ● Electronics ● Semiconductor manufacturing components, 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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