Application exploration of medium carbon and low alloy wear-resistant steel on ball mill compartment plate

    
    Introduction
    
    Medium carbon and low alloy wear-resistant steel is widely used in ball mill liners, especially those of the compartment plate. Its hardness, impact toughness, and wear-resistant performance are much higher than those of other conventional materials. Through its mechanical properties and carefully designed structure, this steel is capable of continuously working under harsh working conditions, and its service life is much longer than that of other materials.
    
    Understanding Medium Carbon and Low Alloy Wear-Resistant Steel
    
    Medium carbon and low alloy wear-resistant steel is a kind of iron-based alloy with an adequate amount of carbon and some alloy elements such as chromium, molybdenum, and element vanadium. Thanks to proper amino acid solution of its constituent materials, this steel possesses very good mechanical properties such as high strength, high toughness and strong wear resistance, not only at room temperature but also at a high temperature of 400~500℃.
    
    Structure and Performance of Medium Carbon and Low Alloy Wear-resistant Steel
    
    As the key part of a ball mill compartment, the medium carbon and low alloy wear-resistant steel has to work hard and bear the load of material. Therefore, the requirement of structure is very strict. As shown in the figure below, the medium carbon and low alloy wear-resistant steel has high-quality toughening structure with pre-designed metal grains. The combination of grains and fine-grained carbide distributed in multiple directions, provides the steel with excellent strength and toughness, as well as improved wear-resistant properties.
    
    Figure 1: The structure and performance of medium carbon and low alloy wear-resistant steel
    
    In terms of performance of the medium carbon and low alloy wear-resistant steel, its hardness is usually more than HB500 and its impact toughness is more than 175J, which greatly guarantees its strength and toughness under harsh working conditions, such as the intense impact of big rocks. In particular, the wear-resistant ability of the steel is better than that of other materials, allowing its components to be used for a long time in a ball mill compartment. Moreover, the oxidation resistance of this steel is far better than that of common steel, so it will not corrode in the high-temperature and humidity work environment.
    
    Application of Medium Carbon and Low Alloy Wear-resistant Steel on Ball Mill Compartment Plate
    
    The middle shell of the ball mill compartment is mostly designed with the medium carbon and low alloy wear-resistant steel, as shown in the figure below. This kind of steel is characterized by its high strength, superior toughness, excellent oxidation resistance and strong wear-resistant performance, making it extremely suitable for the liners of the ball mill compartment plate. In addition, the fine-grained carbide distributed in the medium carbon and low alloy wear-resistant steel has the advantages of strong impact resistance and hardness, ensuring that the ball mill compartment plate can withstand a large impact load without deformation.
    
    Figure 2: Application of medium carbon and low alloy wear-resistant steel on the ball mill compartment plate
    
    Conclusion
    
    In summary, the medium carbon and low alloy wear-resistant steel has been proven to be an excellent choice for the liners of a ball mill compartment plate. Thanks to its unique structure and superior performance in hardness, impact toughness, and wear resistance, this steel is capable of withstanding the test of time in harsh working environment and provides the ball mill with longer working service life.

---