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Polycrystalline corundum

Polycrystalline corundum is produced by adding new elements to the black corundum manufacturing process, thereby optimizing its primary crystal structure. It exhibits a brown‑black color and is characterized by high hardness, excellent toughness, and superior self‑sharpening properties. Polycrystalline corundum retains the advantageous features of black corundum—such as outstanding self‑sharpening, exceptional sharpness, low heat generation, and a highly polished surface—while significantly enhancing its durability.

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Polycrystalline corundum

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+86-18837126599Manager Li /+86-18837129599Manager Zhang /+86-18837183677Manager Li

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Product Details

  • Product Description
    • Commodity name: Polycrystalline corundum
    • Commodity ID: 1470456599418654720

    Polycrystalline corundum is produced by adding new elements to the black corundum manufacturing process, thereby optimizing its primary crystal structure. It exhibits a brown‑black color and is characterized by high hardness, excellent toughness, and superior self‑sharpening properties. Polycrystalline corundum retains the advantageous features of black corundum—such as outstanding self‑sharpening, exceptional sharpness, low heat generation, and a highly polished surface—while significantly enhancing its durability.

    　　 Polycrystalline corundum

    1.1 Introduction to Polycrystalline Corundum

    Polycrystalline corundum is produced by adding new elements to the black corundum manufacturing process, thereby optimizing its primary crystal structure. It exhibits a brownish-black color and boasts high hardness, excellent toughness, and superior self-sharpening properties. Polycrystalline corundum retains the advantageous characteristics of black corundum—such as outstanding self-sharpening, exceptional sharpness, low heat generation, and a highly polished surface—while significantly enhancing its durability.

     

    1. 2 Polycrystalline Corundum Specifications

    Polycrystalline corundum is a new type of abrasive developed over many years by the Yedda team. Its particle size distribution complies with national standards and can also be customized to meet specific customer requirements.

     

    Chemical indicators

     

     

    Name

     

     

    Particle size range

    Typical values of chemical composition

    Al2O3

    (%)

    Fe2O3 (%)

     

    SiO2

    (%)

    TiO2

    (%)

     

     

    Polycrystalline corundum

     

     

    F10-220

     

    62

     

     10

     

     

     

     16

     

     

     

      

       3

     

     

     

    Physical indicators

     

    Color: Brown-black Hardness: Vickers hardness 2100 kg/mm² Crystal system: Trigonal True specific gravity: 3.6 g/cm³

     

    Advantages of Polycrystalline Corundum

     

    2.1 Performance Enhancement

    1. Excellent durability

    Polycrystalline corundum offers more than 30% greater durability than conventional black corundum.

    2. Excellent hydrophilicity

    The particle surfaces of polycrystalline corundum exhibit higher hydrophilicity and stronger bonding strength with resins compared to those of black corundum abrasives.

    3. Good self-sharpening property

    The polycrystalline microstructure of polycrystalline corundum endows it with excellent self-sharpening properties.

    4. Excellent heat dissipation

    The polycrystalline micro‑grinding mechanism of polycrystalline corundum endows it with excellent thermal dissipation properties.

    5. High cost-performance ratio

    Polycrystalline corundum is priced lower than first‑grade brown corundum, yet its performance is essentially on par with the latter, offering superior cost‑effectiveness.

     

    Applications of Polycrystalline Corundum

     

    3.1 Manufacturing Resin Abrasive Tools

     

     

    Manufacturing resin abrasive tools

    Using polycrystalline corundum in combination with other abrasives to fabricate resin-bonded abrasives can effectively enhance both the sharpness and durability of the abrasive tools.

    		 

     

    3.2 Manufacturing of Abrasive Coated Tools

    Manufacture of coated abrasives

    Use polycrystalline corundum or combine it with other abrasives to manufacture abrasive cloth.

    Abrasive tools such as sandpaper and sponge blocks.

     

     

    3.3 Production of Fiber Materials

    Manufacture of fiber products

    Nylon wheels are manufactured using polycrystalline corundum or by combining other abrasives.

    Scouring pads, wire brushes, and other fiber-based abrasives

     

     

    Polycrystalline corundum quotation

     

    4.1 Polycrystalline Corundum Price

     

    Product Name

     

    Specifications

     

    Packaging

    Tax included at factory price

    Unit price (RMB) / tons)

     

     

    Polycrystalline corundum

    F24-36

     

     

    Neutral small pouch / ton bag

    3500

    F46-60

    3600

    F70-80

    3500

    F90-100

    3600

     

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