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High Purity Alumina Grinding Bead for Ceramic Glaze Milling

  1. Used as Ceramic MaterialSpherical micro-powder possesses excellent press-forming and sintering properties, which are extremely beneficial for producing high-quality ceramic products.

    1. Used as Ceramic MaterialSpherical micro-powder possesses excellent press-forming and sintering properties, which are extremely beneficial for producing high-quality ceramic products.
    2. Used as Grinding and Polishing MaterialUsing alumina balls as polishing abrasives can avoid the formation of scratches.

    3.Used in Petrochemical IndustryIn the petrochemical industry, increasingly high requirements are put forward for the pore size distribution and pore structure of alumina carriers. Spherical alumina powder can regulate the pore size and its distribution of the formed catalyst carrier particles by adjusting the particle size configuration.

    1. Used as CatalystSpherical alumina used directly as a catalyst can reduce wear and tear, prolong the service life of the catalyst, thereby lowering the production cost.
    2. Used in Surface Protective Coatings When spherical alumina powder particles are sprayed on metals, plastics, etc., they can greatly improve the surface hardness, corrosion resistance, wear resistance and fire resistance. It is used for surface protection of machinery, cutting tools, chemical pipelines and other components.
    3. Used in Luminescent MaterialsSpherical alumina powder has a high bulk density, which can reduce the scattering of luminophores and effectively minimize the loss of transmitted light, thereby improving light transmittance.
    4. Used in Electronic Industry Due to its excellent electrical, thermal and mechanical properties, spherical alumina is widely used in the field of semiconductor electronic packaging. 

     

    Product Specifications

     

    Parameter

    95% Alumina Beads

    99% Alumina Beads

    Material Purity

    95% Al₂O₃

    99% Al₂O₃

    Density

    3.6–3.7 g/cm³

    3.8–3.9 g/cm³

    Hardness (Vickers)

    ≥1000 HV

    ≥1200 HV

    Fracture Toughness

    3.5–4.0 MPa·m¹/²

    4.0–4.5 MPa·m¹/²

    Wear Rate

    ≤0.008%/1000 hours

    ≤0.005%/1000 hours

    Diameter Range

    1–20 mm

    0.5–15 mm

    Sphericity

    ≤0.01 mm

    ≤0.005 mm

    Surface Roughness (Ra)

    ≤0.08 μm

    ≤0.05 μm

    Max Operating Temperature

    1200°C

    1600°C

    Chemical Resistance

    Resistant to acids (except strong alkalis)

    Highly resistant to most acids and weak alkalis

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