Material technology innovation and process breakthroughs in the mining crushing equipment wear-resistant parts industry.

Wear-resistant material technology is undergoing a transformation from a single material to a composite and high-performance one. Through composition optimization and process improvement, high-chromium cast iron maintains high hardness (more than 58HRC) while increasing impact toughness to more than 2.8J/c㎡, significantly extending the service life of accessories. By adjusting the composition of the hard phase and the bonding phase, the service life of the new hard composite wear material reaches 2-3 times that of traditional high manganese steel, and the cost is only a quarter of that of traditional cemented carbide, and the specific gravity is reduced by about 40%, showing excellent cost-effective advantages.
In terms of material substitution, rubber wear-resistant spare parts continue to increase their penetration rate in the field of mineral processing equipment due to their good wear resistance, long service life, light weight and strong corrosion resistance. At present, the replacement rate of rubber wear-resistant spare parts in the mineral processing process is less than 15%, and with the acceleration of the trend of large-scale mills, this substitution space will be further expanded, bringing structural growth opportunities to the industry.
In terms of process innovation, the combination of iron mold sand covering process and metal mold quenching technology increases the yield of ball castings by 10%, while realizing the recycling of coated sand and significantly reducing production costs. The integration and application of 3DP sand pattern printing technology and traditional resin sand process effectively solves the problem of casting defects of high-chromium liners, extending the service life of the product to more than 3 months, and significantly improving the surface treatment of stainless steel. The centrifugal casting process is successfully applied to the production of rolls with dual material structure, and the grains are refined through the "dual medium quenching and multiple tempering" process, so that the amount of steel is more than 2 times higher than that of ordinary rolls.