Product Overview
UHMWPE (Ultra-High Molecular Weight Polyethylene) Wear Lining Plates are high-performance engineering thermoplastics designed to protect chutes, hoppers, bins, silos, and transfer points from heavy sliding abrasion, continuous impact, and material blockage. Featuring an extremely low coefficient of friction and zero water absorption, these liners replace conventional steel plates, reducing equipment weight, downtime, and operational noise in bulk material handling.
Key Specifications
|
Parameter |
Specification |
|
Material |
UHMWPE (Ultra-High Molecular Weight Polyethylene) |
|
Molecular Weight |
3.5 – 9.2 Million g/mol |
|
Standard Plate Size |
2000 × 3000 mm (Custom sizes available) |
|
Thickness Range |
10 – 100 mm (Tolerance: ±0.3 to ±0.5 mm) |
|
Density |
0.93 – 0.95 g/cm³ |
|
Coefficient of Friction |
0.10 – 0.15 |
|
Shore Hardness |
D64 – D68 |
|
Continuous Temp. Range |
-200°C to +82°C |
|
Custom Processing |
CNC Cutting, Drilling, Countersinking, Slotting, Edge Chamfering |
Performance Advantages
Superior Abrasion Resistance: Outlasts AR400 carbon steel, stainless steel, and cast iron by several times under sliding slurry and bulk material abrasion.
Non-Stick & Flow Promotion: Ultra-low coefficient of friction (0.12) and zero water absorption prevent sticky, moist materials (wet coal, clay) from rat-holing or bridging.
High Impact Strength: High molecular mass absorbs heavy drop impacts without cracking, shattering, or permanent deformation.
Corrosion & Chemical Resistance: Highly inert to acids, alkalis, salts, and organic solvents, eliminating corrosion-induced flow restrictions.
Noise Reduction: High mechanical damping capacity significantly reduces industrial noise level during material dumping and transfer.
Key Industry Applications
Mining & Mineral Processing: Ore chutes, dump truck beds, skips, screens, and flotation cell linings.
Coal Handling & Power Plants: Coal bunkers, boiler feed hoppers, transfer chutes, and railcar discharge systems.
Agriculture & Grain Handling: Grain elevator buckets, storage silos, discharge spouts, and screw conveyor troughs.
Cement & Aggregate: Limestone bins, sand hoppers, batching chutes, and concrete mixer liners.
Ports & Bulk Terminals: Ship loader chutes, hopper cars, mobile feeder hoppers, and conveyor skirt boards.
Selection Guide by Thickness
10–20 mm (Light-Duty)
Recommended for fine powder handling, grain silos, sliding chutes, and light abrasion.
20–30 mm (Medium-Duty)
Standard specification for general coal handling, gravel bins, and aggregate hoppers.
30–50 mm (Heavy-Duty)
Ideal for high material drops, coarse ore transfer chutes, and high-impact areas.
50–100 mm (Extreme-Duty)
Designed for heavy mining applications, primary crushers, and severe impact points.
Material Grades
Virgin UHMWPE (Standard Grade): Natural white or green; offers the highest abrasion resistance and toughness for general bulk material lining.
Anti-Static Grade (ESD): Formulated with conductive additives to prevent static charge buildup in explosive dust environments such as coal mines and grain silos.
Flame Retardant Grade (UL94 V-0): Self-extinguishing material designed to meet strict underground mining and power plant fire safety codes.
UV Stabilized Grade: Outdoor-ready formulation enriched with carbon black or UV absorbers to prevent degradation from sun exposure.
High-Temperature Grade: Special thermal additives allow continuous operation up to 110°C in medium-load environments.
Manufacturing Control
Raw Material Integrity: 100% virgin polymer resin without unapproved recycled additives (reprocessed grades available upon explicit request).
Dimensional Inspection: Thickness ultrasonic gauge checks, full diagonal squareness checks, and hole-to-hole center measurement.
Batch Testing: Physical density checks, tensile tests, and lab batch verification matching EN 10204 3.1 certification.
Traceability: Order batch numbers stamped on sheet edges for quality control tracking.
Installation Best Practices
Fastener Selection
Counter-sunk oval bolts or weld studs recommended; bolt heads must sit 1.5–2.0 mm below the liner wear surface.
Expansion Joints
Maintain a minimum 3–5 mm expansion clearance between adjacent sheets to accommodate operational temperature changes.
Sectional Liner Layout
Modular panel arrangement simplifies manual handling and allows localized replacement of high-wear zones without removing the complete liner system.
Packaging and International Logistics
Protective Packaging: Heavy-duty protective stretch film wrapping, edge corner protectors, and IPPC-stamped fumigated wooden pallets or crates.
Container Loading Optimization: Standard 20ft and 40ft container layout designs to maximize payload weight while ensuring safe forklift unloading at destination ports.
Shipping Terms: FOB, CIF, CFR, DDP options provided with complete export documentation (MTC, Certificate of Origin, Packing List).
Frequently Asked Questions
Q: How do I select the proper UHMWPE molecular weight for my chute?
A: For light sliding abrasive powders, standard 3.5–4.5 Million g/mol is sufficient. For severe mining slurry and high impact material transfer, high-grade 7.5–9.2 Million g/mol is required for extended service life.
Q: Can UHMWPE liners be welded directly to steel bin walls?
A: UHMWPE cannot be directly welded to steel. Installation requires mechanical fasteners (countersunk bolts, weld studs) or plug welding using specialized steel insert disks.
Q: What information is required to get an accurate quotation?
A: Please provide sheet size (Length × Width), required thickness, quantity, target application (material handled, drop height, temperature), and CAD drawings if custom CNC machining is required.
Q: Are UHMWPE wear liners suitable for high-temperature applications above 100°C?
A: Standard UHMWPE softens under sustained temperatures above 80°C. For continuous operating temperatures above 100°C, alternative engineering polymers like Polyurethane, High-Temp UHMWPE grades, or Ceramics should be evaluated.
Q: Does UHMWPE absorb moisture when used in outdoor wet conditions?
A: No. Water absorption is less than 0.01%. It will not freeze, swell, or alter its structural dimensions when exposed to water, snow, or mud.
Q: Can we get pre-machined panels for quick field replacement?
A: Yes. We machine panels strictly according to your layout drawings, including pre-drilled countersunk holes and edge chamfers, for direct drop-in field installation.
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