Introduction to Truck Brake Shoes Sintered Mixture
Truck brake shoes sintered mixtures are high-performance brake shoes friction materials engineered for extreme durability and thermal stability in heavy-duty braking systems. This brake shoes formula utilizes a sintering process, where metallic powders (e.g., iron, copper, graphite) are fused under high pressure and temperature, creating a dense, wear-resistant structure ideal for demanding applications. Below is a detailed analysis of its composition, technical specifications, advantages, and storage guidelines.
Technical Parameters
The table below summarizes the critical properties of sintered brake shoes mixes:
| Parameter | Specification | Remarks |
|---|---|---|
| Metallic Content | 70-85% (Iron, Copper, Graphite) | Enhances thermal conductivity and wear resistance |
| Density | 3.5-4.2 g/cm³ | High-density structure reduces porosity |
| Friction Coefficient (μ) | 0.40-0.50 (Dry) | Stable under heavy loads and high speeds |
| Operating Temperature | -50°C to 800°C | Minimizes thermal fade at extreme heat |
| Compressive Strength | ≥450 MPa | Withstands intense hydraulic pressure |
| Wear Rate | ≤0.3 cm³/MJ | Extended service life (80,000–200,000 km) |
| Shore Hardness | 75-90 Shore D | Optimized for high-pressure drum contact |
Key Advantages
- Superior Heat Resistance
The sintered brake shoes mixture excels in heat dissipation, maintaining stable friction even at 800°C, critical for downhill braking or overloaded trucks . - Exceptional Durability
High metallic content and sintering process reduce wear rates by 30% compared to conventional semi-metallic mixes, ideal for mining or construction vehicles . - Consistent Braking Performance
The brake shoes formula ensures minimal friction variation across wet, dry, or icy conditions, enhancing safety. - Noise and Vibration Control
Graphite additives in the brake shoes friction materials dampen vibrations, reducing squeal and harshness. - Customizable Formulations
Manufacturers adjust brake shoes mixes by varying metal-to-graphite ratios to meet OEM-specific requirements for torque or noise levels.
Storage and Packaging
- Moisture Protection: Store in vacuum-sealed, anti-corrosion packaging to prevent oxidation of metallic components .
- Temperature Limits: Avoid exposure to temperatures exceeding 45°C or below -20°C to preserve structural integrity.
- Stacking: Maximum 4 layers to prevent deformation of sintered friction layers.
- Shelf Life: 18 months in unopened, factory-sealed containers.
Application of Sintered Mixes
The brake shoes mixes are pressed at 25-40 MPa and sintered at 900-1100°C to bond metallic particles . Post-production, they undergo quality tests for shear strength (≥4.5 MPa) and thermal shock resistance. These materials are widely used in off-road trucks, trailers, and industrial machinery requiring high reliability.
By integrating advanced sintering technology with robust material science, this brake shoes mixture ensures unmatched performance in the most challenging operational environments.