The metallographic structure of high-chromium alloy cast iron is on a martensite matrix, inlaid with enough high-hardness M7C3 carbides. Its hardness is HV1300-1800, and it is lath-shaped and discontinuously distributed. Therefore, high chromium alloy cast iron has both quite high hardness (HRC≥58) and sufficient toughness (αK≥6J/cm2). The overall toughness of the composite lining plate is good, so it is suitable for various types of ball mills, large, medium and small. Based on many years of experience in making lining plates, our company has further improved the process. According to the requirements of different lining plates, we have appropriately added nickel, molybdenum, vanadium, copper and other alloys. Based on the original production process, we adopt alloying and inoculation processes to produce A new generation of bimetallic high-alloy composite wear-resistant lining plate is launched. The hardness of the working surface reaches (HRC58-63). The non-working surface is made of alloy steel. The overall toughness ∝K≥20J/cm2 and longer service life are currently the best in the country. anti-wear lining.
The alloy lining plate has high hardness and can be matched with high-hardness steel balls. Lining plates with different hardness can also be designed according to different working conditions to reduce steel ball consumption. The life of the lining plate is extended and does not deform, which reduces the amount of maintenance and overhaul times, reduces the labor intensity of workers, and reduces costs.
It has been proved by the practice of many manufacturers that the service life of the bimetallic high-alloy composite ball mill lining plate produced by our company is 3 times that of the high manganese steel lining plate and 2 times that of the high carbon medium chromium multi-component alloy steel lining plate. If it is used for grinding Coal, the service life can reach 8-10 years.
The lining plates produced by our company have been used in many companies to crush iron ore, aluminum ore, gold ore, etc., and are also used to crush materials that are difficult to crush such as inferior coal and anthracite. The operation is safe and reliable, and has brought considerable benefits to users. economic benefits.
