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Manganese Alloy Liners are wear-resistant liners for ball mills, rod mills, and semi-autogenous grinding (SAG) mills, crafted from manganese-chromium alloy with work-hardening properties. Their surface hardness increases from 200-250 BHN to 400-550 BHN under repeated impact, extending service life by 2.5x compared to carbon steel liners—critical for reducing maintenance downtime in mining and cement plants.
Work-Hardening Mechanism: Austenitic microstructure transforms to martensite under impact, creating a hard wear layer while retaining core toughness, ideal for high-impact grinding environments.
Segmented Design: Interlocking segments with bolted connections simplify installation, reducing replacement time from 8 hours to 3 hours for a standard ball mill.
Corrosion Resistance: Added 1-2% nickel enhances rust resistance in wet grinding processes (e.g., mineral slurry), preventing liner degradation in humid environments.
SAG Mills: Lining mill shells in copper and iron ore mines, handling feed sizes up to 150mm with high impact loads.
Cement Ball Mills: Protecting mill cylinders from clinker and limestone abrasion, ensuring consistent grinding efficiency.
Rod Mills: Lining grinding chambers for aggregate production, maintaining uniform particle size in concrete aggregates.