Product Overview
UHMWPE (Ultra-High Molecular Weight Polyethylene) Wear Resistant Plates deliver dynamic surface protection across chutes, hoppers, silos, and conveyors. Engineered to withstand continuous abrasion, aggressive sliding contact, and severe particle impact, these plates maintain low surface friction to prevent bridging and flow blockage.
Technical Specifications
|
Property |
Typical Value |
Unit |
|
Material Base |
100% Virgin UHMWPE |
- |
|
Molecular Weight |
1.5 - 10.0 |
Million g/mol |
|
Density |
0.930 - 0.944 |
g/cm³ |
|
Shore D Hardness |
65 - 69 |
Shore D |
|
Tensile Strength at Yield |
20.0 - 24.0 |
MPa |
|
Tensile Modulus |
1,000 - 1,200 |
MPa |
|
Notched Izod Impact Strength |
> 160 (or ~30) |
kJ/m² (ft·lbf/in) |
|
Elongation at Break |
> 300 |
% |
|
Dynamic Friction vs. Steel |
0.12 - 0.14 |
Dry Surface |
|
Static Friction vs. Steel |
0.15 - 0.17 |
Dry Surface |
|
Water Absorption (24h) |
Nil (< 0.01) |
% |
|
Melting Point |
135 - 143 |
°C |
|
Service Temperature Range |
-200 to +80 |
°C |
Key Performance Characteristics
Superior Wear and Abrasion Resistance: The ultra-long polymer chains resist surface degradation under continuous abrasive friction, outlasting traditional carbon steel in wet or abrasive sliding conditions.
Ultra-Low Surface Friction: A self-lubricating coefficient of dynamic friction (0.14 against steel) promotes non-stick flow, preventing wet coal, clay, and fine minerals from packing or arching.
Impact Absorption: High notched impact strength absorbs repeated drop force from falling rock and ore without cracking, chipping, or undergoing brittle fracture.
Chemical and Corrosion Immunity: Completely immune to rust, moisture absorption, and chemical attack from most industrial acids, alkalis, and inorganic salts.
Application Areas
Mining and Mineral Processing: Ore transfer chutes, hopper liners, skip cars, vibration screens, and dump pockets.
Coal Handling and Power Plants: Storage bunkers, coal silos, surge bins, boiler feed chutes, and train unloaders.
Aggregates and Cement Production: Sand/gravel hoppers, concrete mixer liners, chute bottoms, and aggregate transfer points.
Bulk Logistics and Conveyors: Skirting boards, slider beds, chain guide rails, transfer points, and chute side-walls.
Heavy Mobile Equipment: Off-highway dump truck body liners, scraper beds, excavator buckets, and front-loader buckets.
Molecular Weight Selection Guide
Matching the proper molecular weight grade to operational severity ensures balanced wear life and cost-efficiency:
1.5-3.0 Million Grade (Standard Wear)
Suitable for light-to-medium friction applications, including agricultural handling, general packaging guides, and low-impact grain chutes.
5.0 Million Grade (High Abrasion)
Engineered for continuous material sliding, mid-sized particle impact, and moderate volume bulk handling systems.
8.0-10.0 Million Grade (Severe Duty)
Designed for extreme mining, heavy ore transfer, dynamic slurry contact, and severe impact areas.
Standard Plate Dimensions and Thickness Range
Available Thickness: Standard production ranges from 6 mm to 300 mm. Thickness selection depends on particle mass, drop height, and target wear life.
Standard Pressing Mold Sizes:
- 1260 x 3080 mm
- 1050 x 4150 mm
- 1510 x 4150 mm
- 1550 x 5150 mm
- 1325 x 6200 mm
- 1510 x 4510 mm
Custom Sizing: Custom panel dimensions can be cut directly from primary master sheets to match target equipment frames.
Custom Machining and Fabrication Capabilities
Engineered components are delivered ready for installation directly from CAD files:
CNC Panel Profiling
Precision perimeter cutting, edge chamfering, radius profiling, and expansion slots.
Hole Processing
Straight drilling, counterboring, 45°/60° countersinking, and slotted bolt clearance patterns.
Drawing-Based Production
Direct fabrication from 2D (DWG/DXF/PDF) or 3D (STEP/IGES) engineering models with standard ISO 2768 tolerances.
Quality Assurance
Every production lot undergoes rigorous inspection before release:
Viscosity-average molecular weight verification and pure virgin resin input checks.
Laser-verified panel length, width, thickness, hole center distances, countersink depth, and flatness.
Verification of finish smoothness, edge deburring, and total absence of internal voids or inclusions.
Installation Guidelines
Bolted Attachment: Uses countersunk steel bolts, weld-on studs with step washers, or elevator bolts to maintain a flush sliding surface.
Thermal Expansion Accommodation: Oversized or slotted bolt holes compensate for the thermal expansion and contraction of PE materials across temperature swings.
Substructure Layout: Panels must be backed fully by flat steel or structural framework to prevent deflection under heavy loads.
Packaging and International Logistics
Surface Protection: PE protective film covers finished liner surfaces against dirt, oil, and transport scratching.
Export Palletizing: Placed on heavy-duty, fumigated wooden or steel pallets, secured with edge protectors and high-tensile strapping.
Machined Component Packing: Pre-machined parts are individually grouped, crated in custom wooden boxes, and labeled for simple on-site sorting.
Frequently Asked Questions
Q: How do I determine whether to increase plate thickness or upgrade the molecular weight?
A: High abrasion with continuous sliding calls for higher molecular weight (5M-10M). High particle drop impact requires increased plate thickness alongside structural backing.
Q: Can UHMWPE wear plates fully replace manganese or steel wear liners?
A: Yes, in applications governed by sliding wear, fine-to-medium particle impact, flow clogging, or chemical corrosion. For massive primary rock impact (>250 mm lump size from extreme drop heights), hybrid steel-rubber-ceramic solutions may be required.
Q: Are pre-drilled liner panels fully ready for drop-in field installation?
A: Yes. Precision CNC cutting produces finished panels matching your hole patterns, allowing immediate installation without field drilling or trimming.
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