Mining & CrushersGrinding Mill Liners
SAG mill shell liner / head liner
SAG mill liners: large single castings (500–1500 kg). Profile: lifter bars + shell plates. Mn steel dominates for large SAG (impact energy high). White iron for ball mills (lower impact, high abrasion). OEM (FLSmidth, Metso Outotec, Thyssenkrupp) drawing controlled.
Specifications
Material
Mn steel Mn18Cr2 (high impact); 27%Cr white iron (high abrasion); Martensitic Cr15MoNi; Rubber-metal composite (some designs)
Grades
Mn18Cr2
Material Class
White IronMn Steel
Service Conditions
abrasionimpact loading
OEM References
FLSmidthMetsoThyssenkrupp
Common Processes
Sand casting (large – typically resin / furan no-bake for shell liners up to 1000+ kg); heat treat (Mn: solution anneal; white iron: destabilise + temper)
NDT & Inspection
Chemical analysis; hardness profile (white iron 620–680 HBN; Mn: austenitic microstructure); dimensional (lifter height, face profile); microstructure; VT; Charpy impact (Mn); weight per piece
Typical Specs & Notes
SAG mill liners: large single castings (500–1500 kg). Profile: lifter bars + shell plates. Mn steel dominates for large SAG (impact energy high). White iron for ball mills (lower impact, high abrasion). OEM (FLSmidth, Metso Outotec, Thyssenkrupp) drawing controlled.