Cold Bin Liner Plate

Function

By wearing predictably in place of the structural bin shell, liner plates extend bin body service life by a factor of five or more. Maintaining liner thickness also preserves the designed hopper-angle geometry that promotes free aggregate flow; worn or missing panels at hopper corners and the lower bin angles create ledges and pockets where material bridges or hangs up, disrupting the consistent aggregate flow rate on which feed metering accuracy depends. A bridging event requires operator intervention and introduces a feed gap that shows as a temperature excursion in the dryer.

Construction & quality

Abrasion-resistant quenched and tempered steel plate to 400–500 HB (AR400 equivalent or hardox-grade), thickness 8 mm to 20 mm depending on panel position (floor panels typically 16–20 mm; wall panels 10–14 mm). Plates are laser-profiled or plasma-cut to match bin geometry, formed to the required angles, and drilled with countersunk M16 or M20 bolt holes for a flush interior surface that prevents material snagging. Edges de-burred and corners radiused. No surface coating is applied — the through-hardened plate surface is the functional wear face.

When to replace

• Plate thickness below 4 mm as measured by ultrasonic thickness gauge or at inspection
• Through-wear exposing the structural bin shell plate behind the liner
• Elongated bolt holes allowing liner movement and audible rattle during bin loading
• Visible gouging channels on the floor liner directing material off-centre toward bin edges
• Material bridging at bin hopper angles due to loss of smooth taper geometry from worn corners