Beginners Guide

Information Sources:
Van Reenen & Nichols
Poly Hi Solidur
Multotec

Types of liners

Chutes, silos, bins and hoppers are lined with three basic liner types. Each type has specific installation patterns and procedures.

The three basic types are:

1.Hard - Wearing Steel Plates:- To protect the chute plates from excessive wear.

These liners are manufactured from steel plates with different properties and grades of hardness.

Mineral Hardness

When the average hardness of the materials is lower than that of the wear plate, the plate is exposed to only moderate wear.
However, when the hardness of the material is higher than that of the wear plate, a wearing-down process begins.
The harder the minerals the more rapid the wear.
The harder the wear plate the greater the wear resistance.

Some of the more common names are: Mild steel, Grade 50b, Cor Ten, Bennox, Roq Tuf, Roq Last, Chromium Carbide, etc.
Different types are used for different applications and advice from experts is recommended w.r.t. selections.

2.Hard - Wearing Ceramic Tiles:- To protect the chute plates from excessive wear.

Ceramic dry pressed, high alimina ceramic tiles are normally manufactured in standard sizes.

Custom made tile and shapes are also available for specific applications.

3.Low Friction UHMWPE:- To improve the flow of material across the chute plates.

UHMW, UHMW-PE and UHMWPE are three different ways to describe Ultra High MolecularWeight Polyethylene.

Companies manufacture UHMW in sheet and rod shapes.

Sheet and rod shapes can be machined into finished parts.

UHMW is used in applications like wear plates skids plates, wear pads, sprockets, bogie wheels, conveyer flights, scrapers, bushings, gears, gearing, canning line and wear guides.

UHMW qualities include non-stick, wear resistant, abrasion resistant, self lubricating, friction resistant, impact resistant,chemical resistant.

UHMW in some instances replaces steel, aluminum and polyurethane.

Liners are manufactured from sheets and are quite easily installed and offer: increased flow, reduction in wear and the elimination of bridging, ratholin and caking of material to container sides.