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  • Products

  • Gear hardening machine

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    Electric furnace technical information（技术）
    Medium frequency furnace lining maximum working temperature table
        

    Medium frequency furnace lining maximum working temperature table

    Furnace lining material

    Mineral composition ( % )

    Melting point (°C)

    Maximum working temperature (°C)

    Remarks

    CaO

    CaO ≥ 96

    2570

    1850

    Alkaline

    MgO

    MgO ≥ 98

    2300

    1800

    Alkaline

    Sintered MgO

    MgO ≥ 96

    2000

    1750

    Alkaline

    MgO and Al 2 O 3

    MgO 28.3

    Al 2 O 3 71.7

    2135

    1750

    neutral

    SiO 2 and Al 2 O 3

    Al 2 O 3 71.8

    SiO 2 28.2

    1870

    1600

    neutral

    ZrO2 · SiO 2

    ZrO2 · SiO 2 ≥ 95

    2693

    1650

    neutral

    SiO 2

    SiO 2 ≥ 96

    1700

    1550

    Acidic

     

     

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