Tooth Plates

Double Roll Crusher Tooth Plates

Double Roll Crusher Tooth Plates For the Coal Industry

The tooth plate of the double-roll crusher plays a key role in coal crushing operations. It has the advantages of efficient crushing, precise particle size control, strong wear resistance, easy maintenance, strong adaptability and energy saving. It is an important equipment component in the coal processing industry.

Qiming Tooth Plates

Qiming Casting specializes in producing roller crusher tooth plates featuring materials of Mn18Cr6 and bimetal composites. The Mn18Cr6 tooth plates, with their high manganese content, exhibit excellent hardness and wear resistance, making them ideal for crushing hard and abrasive materials. These tooth plates undergo a precise heat treatment process to enhance their mechanical properties, ensuring superior performance and longevity in demanding crushing applications.

Furthermore, Qiming Casting’s bimetal composite tooth plates combine the strength and toughness of a high-quality steel base with the exceptional wear resistance of a hard-facing layer. This innovative design extends the tooth plate’s service life and reduces maintenance costs and downtime. Our bimetal tooth plates are carefully manufactured through advanced techniques such as casting and welding, ensuring a strong bond between the layers and superior resistance to impact and abrasion.

Both Mn18Cr6 and bimetal composite tooth plates offered by Qiming Casting are designed to withstand the rigors of various industrial crushing operations, including mining, quarrying, and construction. With their exceptional durability and reliability, these tooth plates are the optimal choice for enhancing the productivity and efficiency of your crushing equipment.

Mn18Cr6 Tooth Plates

Mn18Cr6 Tooth Plates

Mn18Cr6 steel, with its high manganese content, has unique mechanical properties. This steel typically exhibits work-hardening characteristics after being subjected to impact. Here are some main mechanical properties of Mn18Cr6 steel:

  • Hardness:
    In the softened condition, the hardness is typically below 229 HBW (Brinell hardness).
    The hardness can reach higher levels after heat treatment (such as water quenching), but the specific value depends on the heat treatment process.
  • Tensile Strength:
    It is usually between 600 to 800 MPa.
  • Yield Strength:
    The yield strength is relatively low, which makes Mn18Cr6 steel able to undergo plastic deformation without fracturing when subjected to impact.
  • Elongation:
    It has a high elongation, typically above 30%, indicating good material plasticity.
  • Impact Toughness:
    Mn18Cr6 steel has excellent impact toughness and can absorb much impact energy without undergoing brittle fracture in low-temperature environments.
  • Wear Resistance:
    Due to its high manganese and chromium content, Mn18Cr6 steel is highly wear-resistant, especially under impact and abrasion conditions.

These properties make Mn18Cr6 steel suitable for making components that must withstand high impact and wear, such as crusher tooth plates and excavators’ bucket teeth. However, the specific values of mechanical properties may vary depending on different heat treatment processes and manufacturing standards.

Bimetal Composite Tooth Plates

Bimetal Composite Tooth Plates

Qiming Casting is a leading manufacturer of bimetal composite tooth plates designed specifically for roller crushers. These tooth plates are engineered using advanced materials and techniques to deliver exceptional durability and performance in demanding crushing operations. The bimetallic structure combines a hard, wear-resistant surface layer with a strong and tough base material, providing excellent resistance to abrasion and impact.

  • Hardness:
    The wear-resistant layer usually has a very high hardness. For example, the hardness of high chromium cast iron can reach 58-62 HRC, which helps to resist material wear. The hardness of the matrix material is lower, usually between 200-300 HBW, to maintain sufficient toughness.
  • Tensile strength and yield strength:
    The matrix material provides high tensile strength and appropriate yield strength to ensure that the tooth plate does not fracture when subjected to high stress.
    The specific tensile strength and yield strength depend on the type of matrix material and heat treatment process used.
  • Elongation and impact toughness:
    The matrix material usually has good elongation and impact toughness, which can absorb impact energy and prevent the tooth plate from cracking under impact load. Although the wear-resistant layer is hard, its elongation and impact toughness are relatively low. Therefore, it is necessary to ensure a good bond with the matrix during design to utilize the toughness of the matrix.
  • Wear resistance:
    The wear resistance of the double metal tooth plate is significantly better than that of a single material tooth plate, especially when handling abrasive materials, the presence of the wear-resistant layer greatly extends the service life of the tooth plate.
  • Heat resistance and corrosion resistance:
    Depending on the materials selected, the double metal tooth plate may have certain heat resistance and corrosion resistance, suitable for working in different environmental conditions.

Frequently Asked Questions