Polyurethane High-Frequency Precision Screen Mesh

Core Advantages

1. Micron-Level Precision Screening with Doubled Screening Efficiency

• Excellent Anti-Blocking and Self-Cleaning Mechanism: Polyurethane materials feature extremely low surface energy and an elastic recovery rate of over 95%. Under high-frequency vibration (typically 25Hz and above), the screen surface generates a strong “second harmonic” micro-vibration, effectively shaking off adhering moist particles and sticky materials. Combined with the tapered (trapezoidal) slot design that is narrower at the top and wider at the bottom, qualified particles pass through easily without getting stuck, fundamentally eliminating blockage of micro-sized openings.

• High Open Area and Precision: Thanks to advanced precision mold technology, the screen achieves extremely small slot tolerance (≤0.05mm) and high open area (up to 30%-45%). Even when processing materials with high moisture content or extremely fine particle sizes (e.g., 0.045mm – 2mm), it maintains extremely high throughput and separation accuracy, significantly improving concentrate grade or finished sand quality.

2. Superior Wear and Impact Resistance for Extended Service Life

• Excellent Physical Properties: Made of premium wear-resistant polyurethane, its abrasion resistance is 3-5 times that of ordinary rubber and 5-10 times that of metal wire mesh screens such as high-manganese steel. Under high-wear conditions such as mining and coal washing, it resists cracking and structural damage, greatly reducing the frequency of spare parts replacement and overall operating costs.

• Built-in Reinforcement Framework: High-strength steel wire or metal frameworks can be pre-embedded inside the panel, endowing the screen with extremely high tensile strength and tear resistance, capable of withstanding strong lateral tensile stress and coping with the dual challenges of heavy material bed pressure and high-frequency vibration.

3. Vibration Damping, Noise Reduction, Lightweight and Energy Saving

• Excellent Shock Absorption and Noise Reduction: The inherent damping characteristics of polyurethane effectively absorb impact energy from material falling and machine operation. Field measurements show that polyurethane fine screens reduce noise by 10-20 decibels compared to metal screens of the same specification, significantly improving the workshop working environment.

• Reduced Operating Energy Consumption: With a density only about 1/7 that of steel, the panels are extremely lightweight. While ensuring high mechanical strength, they significantly reduce the machine’s operational load, effectively saving electrical energy consumption during operation and extending the life of the vibrator.

4. Corrosion and Aging Resistance for Harsh Operating Conditions

• Excellent Chemical Stability: For wet screening environments, hydrolysis-resistant polyether polyurethane formulations are available; for dry screening, polyester formulations with superior wear resistance are preferred. Possesses extremely strong resistance to oil, acids and alkalis, and aging, enabling long-term stable operation over a wide temperature range of -30℃ to 80℃.

Technical Parameters

• Material: High-performance wear-resistant polyurethane elastomer (polyester or hydrolysis-resistant polyether type available depending on operating conditions; steel-wire reinforcement framework can be embedded upon request)

• Applicable Frequency: Suitable for high-frequency vibration equipment at 25Hz and above

• Dimensions: Supports various standard sizes (e.g., 840mm×1450mm, etc.) and thicknesses (typically 10mm – 50mm); customized non-standard sizes available per drawings

• Screen Opening Specifications: 0.045mm – 5mm (slot, square hole, round hole, and irregular anti-blocking hole customization supported; slot tolerance ≤0.05mm)

• Hardness Range: Shore 85A – 92A (balancing extreme anti-blocking elasticity and wear-resistant load-bearing requirements)

• Temperature Range: -30℃ to 80℃ (normal operating conditions; special formulations can withstand higher temperatures)

Application Areas

Widely used in mining beneficiation (wet fine classification and dewatering of iron ore, gold ore, copper ore, etc.), coal washing (raw coal classification, clean coal desliming and dewatering), sand and gravel aggregate plants (mechanized sand classification, fine sand recovery and dewatering), quartz sand production for glass raw materials, metal powder preparation, as well as solid-liquid separation and precision filtration operations in chemical, building materials, and environmental protection industries. Particularly suitable for various stacked high-frequency fine screens and medium-to-heavy-duty vibrating screening equipment with extremely high requirements for screening accuracy, anti-blocking performance, and processing capacity.