Introduction to Truck Brake Linings Brass-Free Mixture
Truck brake linings brass-free mixtures are an environmentally conscious innovation in brake linings friction materials, designed to eliminate hazardous heavy metals while maintaining high braking efficiency and durability. These brake linings mixes integrate advanced synthetic fibers, ceramic particles, and steel reinforcements to achieve compliance with global regulations (e.g., RoHS) and deliver reliable performance for heavy-duty vehicles. Below is a detailed analysis of their composition, technical specifications, advantages, and storage protocols.
Technical Parameters
The table below summarizes the key properties of brass-free brake linings formula:
| Parameter | Specification | Remarks |
|---|---|---|
| Metal Content | 0% Brass, ≤15% Steel Fibers | Complies with eco-regulations |
| Friction Coefficient (μ) | 0.38-0.42 (Dry) | Stable under dynamic conditions |
| Density | 2.4-2.8 g/cm³ | Optimized for heat dissipation |
| Operating Temperature | -40°C to 600°C | Resists thermal degradation |
| Wear Rate | ≤0.4 cm³/MJ | Enhanced longevity |
| Compressive Strength | ≥280 MPa | Suitable for heavy loads |
| Shore Hardness | 55-70 Shore D | Minimizes drum wear |
Key Advantages
- Eco-Friendly Composition
The brake linings mixture eliminates brass and other toxic metals, aligning with stringent environmental standards (e.g., EU Directive 2000/53/EC). - Reduced Noise and Vibration
Ceramic additives and layered fiber structures dampen vibrations, ensuring quieter operation compared to traditional metallic linings. - Thermal Stability
High ceramic content (20-30%) enables consistent friction performance even under repeated high-temperature braking. - Corrosion Resistance
Steel fibers and synthetic binders prevent oxidation, ideal for humid or salt-exposed environments . - Cost Efficiency
Lower wear rates reduce replacement frequency, lowering total ownership costs .
Storage and Packaging
- Moisture Protection: Packaged in vacuum-sealed, anti-static polybags with desiccants to prevent moisture absorption.
- Temperature Control: Store in dry environments below 35°C; avoid direct sunlight .
- Stacking Guidelines: Maximum 6 layers per pallet to prevent deformation .
- Shelf Life: 18 months in unopened original packaging.
Application of Brake Linings Mixes
The brake linings formula is compression-molded at 150-200°C and 20-25 MPa pressure to ensure uniform density and adhesion to the shoe plate. Post-curing treatments enhance surface hardness and thermal conductivity. Manufacturers like Hubei Feilong and Hangzhou Feiying utilize automated production lines to achieve daily outputs exceeding 8,000 sets .
By combining regulatory compliance with robust engineering, brass-free brake linings provide a sustainable and high-performance solution for modern commercial vehicles.