Views: 0 Author: Site Editor Publish Time: 2025-04-08 Origin: Site
As an innovative small and medium-sized enterprise in Tianjin in 2024, Tianjin Beyond Technology Development Co., Ltd. has been deeply engaged in the research and development of polymer materials. Its UHMWPE Liner Sheet (ultra-high molecular weight polyethylene liner) and HDPE Sheet (high-density polyethylene liner) have become the preferred solutions for truck linings, coal bunker linings, chute linings and other scenarios in coal mining, transportation and storage, relying on their core advantages such as high wear resistance, high self-lubrication and low water absorption. The following is an analysis from three aspects: material properties, application scenarios and industry value:
Material properties: performance parameters and technological innovation
1. UHMWPE Liner Sheet: Super wear resistance and self-lubrication
Wear resistance: UHMWPE's wear resistance is 7 times that of carbon steel, and the friction coefficient is as low as 0.1-0.3 (ASTM D1894 standard). It can withstand long-term impact and friction of sharp materials such as coal and ore. When used for truck linings, the surface scratch depth is only 1/5 of that of steel plates.
Self-lubrication: Molecular structure optimization achieves zero lubricant dependence, coal sliding resistance is reduced by 30%, and the risk of coal bunker arching is significantly reduced.
Low temperature resistance: It still maintains an impact strength of ≥30kJ/m² at -50℃, which is suitable for winter operations in northern open-pit coal mines.
2. HDPE Sheet: Lightweight and chemical corrosion resistant
Low density and high toughness: The density is only 0.93-0.97g/cm³, which is 60% lighter than steel, and supports modular installation and quick disassembly.
Corrosion-resistant and anti-static: It is resistant to acid, alkali, and salt corrosion (pH 2-12), with a surface resistivity of ≤1×10⁶Ω·m, and meets the explosion-proof standards of the coal industry (MT558.1-2005).
3. Common advantages
Low water absorption: Water absorption rate <0.01% (GB/T 1034 standard), no risk of expansion and deformation in high humidity environments.
Environmentally friendly and recyclable: The material supports 100% melt regeneration, and waste linings can be recycled into pallets, pads and other components to reduce solid waste emissions.
Application scenarios and functional design
1. Dump Truck Liners
Impact protection: 3-15mm thick UHMWPE Liner Sheet is used to cover the inner wall of the car, fixed by bolts or welding, reducing the wear of the car body caused by material loading and unloading, and extending the maintenance cycle to 5 times that of traditional steel linings.
Cost reduction and efficiency improvement: Taking an open-pit coal mine in Shanxi as an example, after the transformation of 50 coal transporters, the annual average maintenance cost was saved by more than 100,000 yuan/vehicle, and the equipment downtime was reduced by 1,200 hours.
2. Coal Silo Liners
Anti-arching design: The surface diamond embossed texture (friction coefficient 0.15) combined with self-lubricating properties improves the unloading efficiency by 40% and avoids blockage in the bin caused by static friction.
Flame retardant and corrosion resistant: Resistant to erosion by coal gangue sulfide and acidic water, with a service life of 8-10 years, and the comprehensive cost is 50% lower than that of metal liners.
3. Chute Liners
Resistance reduction and energy saving: UHMWPE lining can reduce the power demand of conveying motors by 15%-20%, and save 50,000 kWh/km annually. At the same time, the modular buckle design reduces the intensity of manual installation by 60%.
Intelligent monitoring upgrade: UHMWPE lining embedded with wear sensors can monitor thickness changes in real time and warn of replacement cycles, promoting the construction of smart mines.
Technological breakthroughs and industry competitiveness
1. Material composite process
Multi-layer co-extrusion technology: surface dense wear-resistant layer (0.5mm) + core impact-resistant layer (2-10mm) composite structure, comprehensive performance improved by 25%.
Molecular weight optimization: Control the molecular weight of UHMWPE to 1.5 million, balancing wear resistance and impact strength.
2. Economic value comparison
Life cycle cost: UHMWPE lining has a service life of 8-10 years, does not require anti-corrosion and anti-rust treatment, and the comprehensive cost is 50% lower than that of metal.
International competitiveness: Export products have passed the EU CE certification and are used in the lining of overseas mines and port bulk carriers, reducing bulkhead wear by 30%.
Tianjin Beyond Technology's UHMWPE Liner Sheet and HDPE Sheet have redefining the safety and efficiency standards of material conveying equipment in the coal industry with wear resistance, self-lubrication and low maintenance as their core competitiveness. Its technological advantages are not only reflected in the breakthrough of material performance, but also through intelligent upgrading and circular economy model, it promotes the transformation of mining engineering to green and intelligent. In the future, with the continuous optimization of ultra-high molecular weight polyethylene modification technology, Beyond will further consolidate its leading position in the field of global mining materials.
