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Fabrication

When does UHMW-PE lining beat a steel wear liner?

UHMW-PE wins where material is sticking, bridging or freezing rather than abrading — coal and damp ore chutes, bins and hoppers. Its low friction keeps flow moving and it weighs an eighth of steel. Abrasion resistant steel still wins on high impact, sharp rock and temperatures above about 80 C.

The two liner types fail in different ways, so the selection follows the problem, not the price per square metre.

Choose UHMW-PE when the complaint is hang-up, carry-back, bridging or plugging: wet coal, clay-bearing ore, grain, cement in humid conditions, or any sticky fines. Its surface friction is roughly a third of steel's, it is self-lubricating, it damps noise, and at about 0.93 g/cm3 a sheet can be installed by hand where a steel plate needs lifting gear.

Choose abrasion resistant steel when the complaint is impact or gouging: primary crusher discharge, rock boxes, large lump sizes, grizzly decks and anywhere a lump can hit the surface rather than slide along it. UHMW-PE also loses its properties above roughly 80 C continuous and is not suitable near hot clinker or sinter.

Many plants end up with both: steel in the impact zone, UHMW-PE in the sliding and convergent sections of the same chute. That combination usually gives the longest interval between shutdowns, which is the number that matters.

Axicor supplies UHMW-PE in PE1000 and PE8000 grades in sheet and machined liner form, and the 400 to 600 HBW abrasion resistant plate for the impact sections, cut to the same drawing.

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