CementKiln & Pyroprocessing
Kiln tyre (riding ring) – rotary kiln support tyre
One of the largest castings in cement – kiln tyre for large kilns 50–80 tonne weight. OD up to 8–10m diameter. Ovality and runout critical for smooth kiln rotation. Loose-riding design (designed clearance to shell) or fixed-riding. Careful pattern allowance for contraction on OD.
Specifications
Material
Cast Steel ASTM A148 Gr80-50 / Gr105-85; medium carbon alloy steel (Mn-Cr-Mo) – large tyre castings
Material Class
Cr-MoCast SteelAlloy Steel
Applicable Standards
ASTM A148 Gr80
Common Processes
Sand casting (resin / furan no-bake for very large ring castings – up to 30 tonne); or rolled ring + machined (for regular sizes); heat treat (Q&T)
NDT & Inspection
UT (full volume, ASTM E446 equivalent); MT; dimensional (OD, bore, face widths, ovality); hardness (HB 250–320 typical); VT
Typical Specs & Notes
One of the largest castings in cement – kiln tyre for large kilns 50–80 tonne weight. OD up to 8–10m diameter. Ovality and runout critical for smooth kiln rotation. Loose-riding design (designed clearance to shell) or fixed-riding. Careful pattern allowance for contraction on OD.
⚠ Caveats
Ovality and runout critical for smooth kiln rotation.