Engineering Thermoplastics for Harsh Mining Conditions
by admin-ha
Plastics in mining have to cope with abrasion, impact, water, oil and wide temperature swings. Engineering plastics are designed for exactly these demands and are replacing metal in a growing number of components.
What Are Engineering Thermoplastics?
Thermoplastics soften when heated and harden when cooled, which makes them ideal for injection moulding. Engineering grades offer higher strength, toughness and wear resistance than everyday commodity plastics.
Common Engineering Plastics in Mining
Nylon (polyamide)
Nylon is tough, wear resistant and has low friction. It is widely used for bushings, wear pads and gears. Nylon absorbs some moisture, which can affect dimensions, so grade selection matters in wet conditions.
Acetal (POM)
Acetal is stiff, dimensionally stable and has low friction, making it suitable for precision parts and components exposed to moisture.
UHMW polyethylene
UHMWPE has outstanding abrasion and impact resistance and very low friction. It is usually machined or compression moulded rather than injection moulded, and is common in liners and wear strips.
Polyurethane
Not a rigid thermoplastic in most mining uses, but polyurethane elastomers are essential for guards, slides and impact parts. Compare them in polyurethane vs rubber vs steel.
How to Choose the Right Material
| Requirement | Good candidates |
|---|---|
| Sliding wear and low friction | Nylon, acetal, UHMWPE |
| Impact absorption | Polyurethane, UHMWPE |
| Dimensional stability in water | Acetal |
| Complex shapes in volume | Injection-mouldable grades such as nylon and acetal |
Benefits Over Metal
- No corrosion
- Lighter components
- Less wear on mating parts
- Lower cost at volume
See how this plays out in plastic vs metal drilling segments.
Get Expert Material Advice
We help customers select the right material for their component and manufacture it in-house. Read about custom injection moulding for mining.
Frequently Asked Questions
What plastics are used in mining equipment?
Common choices include nylon, acetal, UHMW polyethylene and polyurethane elastomers, chosen for wear, impact and moisture resistance.
Can plastic parts replace metal in mining?
Yes, for many wear and guiding components. Plastics resist corrosion, reduce weight and protect mating parts. Highly loaded or high-temperature parts may still need metal.
Which plastic is best for wet mining conditions?
Acetal and UHMWPE are dimensionally stable in water. Some nylon grades absorb moisture, so the right grade should be chosen carefully.
Can you help choose a material for my part?
Yes. Mining Parts Australia can recommend a suitable engineering plastic and manufacture the component in-house.
Talk to Mining Parts Australia
Send us a part number, photo or description and our team will source it for you. Browse the product list, explore our services or contact us on (07) 5535 2228. For the bigger picture, read our complete guide to mining parts in Australia.
Posted in Custom Manufacturing