CementRaw Mill
Raw mill grinding roller / tyre (VRM roller shell)
Roller shell profile matched to table segment. Replaced by sliding over axle – bore dimensional accuracy critical. Same OEM drawing control as table. Hard-facing option: welded overlay (Chromocarbide / tungsten carbide) applied post-casting for life extension.
Specifications
Material
27%Cr Hi-Chrome white iron; Martensitic Cr15MoNi; Ni-Hard IV; composite (cast + welded hard-facing)
Grades
Ni-Hard IV
Material Class
White IronHi-ChromeNi-Hard
Common Processes
Sand casting (roller shells are ring-form castings – resin sand / furan); heat treat (Hi-Cr: destabilise + temper)
NDT & Inspection
Chemical analysis; hardness profile (surface and cross-section); microstructure; dimensional (profile taper, bore for roller axle fit); VT; weight
Typical Specs & Notes
Roller shell profile matched to table segment. Replaced by sliding over axle – bore dimensional accuracy critical. Same OEM drawing control as table. Hard-facing option: welded overlay (Chromocarbide / tungsten carbide) applied post-casting for life extension.
⚠ Caveats
Replaced by sliding over axle – bore dimensional accuracy critical.