Introduction to Truck Brake Linings Metallic-Based Mixture
Truck brake linings metallic-based mixtures are high-performance brake linings friction materials engineered for heavy-duty braking systems. These formulations integrate metallic components (e.g., iron, copper, steel fibers) with binding resins and additives to achieve superior heat dissipation, durability, and consistent friction performance. Below is a detailed analysis of their composition, technical specifications, advantages, and storage protocols.
Technical Parameters
The table below outlines key properties of metallic-based brake linings mixes:
| Parameter | Specification | Remarks |
|---|---|---|
| Metallic Content | 50-70% (Iron, Copper, Steel Fibers) | Enhances thermal conductivity and wear resistance |
| Density | 2.6-3.2 g/cm³ | Balances structural integrity and weight |
| Friction Coefficient (μ) | 0.35-0.45 (Dry) | Stable across speeds and temperatures |
| Operating Temperature | -50°C to 700°C | Resists thermal fade and deformation |
| Compressive Strength | ≥300 MPa | Withstands high hydraulic pressure |
| Wear Rate | ≤0.5 cm³/MJ | Extended service life for heavy loads |
| Shore Hardness | 60-75 Shore D | Optimized for drum contact and noise reduction |
Key Advantages
- Exceptional Thermal Stability
Metallic elements like iron and copper efficiently dissipate heat, minimizing brake fade during prolonged braking . - High Durability
Steel fiber reinforcement in the brake linings formula reduces wear rates by 30% compared to organic alternatives, ideal for high-mileage trucks . - Consistent Friction Performance
The brake linings mixture maintains stable friction coefficients under varying conditions, ensuring reliable stopping power . - Noise Reduction
Additives like graphite minimize vibration and squeal, enhancing driver comfort . - Compatibility
Designed for seamless integration with cast iron or composite brake drums, reducing compatibility issues .
Storage and Packaging
- Moisture Resistance: Packaged in sealed, moisture-proof materials to prevent oxidation of metallic components .
- Temperature Limits: Store in environments between -10°C and 40°C to avoid material degradation.
- Stacking: Limit stacking to 5 layers to prevent deformation of linings .
- Shelf Life: 24 months in original, unopened packaging .
Application of Brake Linings Mixes
The brake linings formula is molded under high pressure (15-30 MPa) and vulcanized to ensure adhesion between the friction layer and backing plate. Post-production testing includes shear strength (≥3.8 MPa) and thermal cycling resistance to meet OEM standards . For specialized applications, manufacturers adjust metallic ratios to optimize performance for specific truck models or operating conditions .
By combining advanced metallic alloys with precision engineering, these brake linings deliver unmatched reliability for commercial vehicles in extreme environments.