Introduction to Truck Brake Shoes Sintered Metallic Mixture
Truck brake shoes sintered metallic mixtures are high-performance brake shoes friction materials designed for extreme durability and thermal stability in heavy-duty braking systems. Utilizing a brake shoes formula that combines powdered metals (e.g., iron, copper, and steel alloys) under high-pressure sintering, these brake shoes mixes deliver unparalleled resistance to wear, heat, and mechanical stress. Below is a detailed analysis of their technical specifications, advantages, and storage guidelines.
Technical Parameters
The table below outlines key properties of sintered metallic brake shoes mixture:
| Parameter | Specification | Remarks |
|---|---|---|
| Metallic Content | 60-80% (Iron, Copper, Steel alloys) | Enhances heat dissipation and structural integrity |
| Density | 5.8-6.5 g/cm³ | Optimized for high load-bearing capacity |
| Friction Coefficient (μ) | 0.40-0.50 (Dry) | Stable under high-speed braking |
| Operating Temperature | -50°C to 800°C | Resists thermal degradation and fade |
| Compressive Strength | ≥450 MPa | Withstands extreme hydraulic pressure |
| Wear Rate | ≤0.3 cm³/MJ | Extended service life in harsh conditions |
| Porosity | 10-15% | Facilitates heat dissipation and noise reduction |
Key Advantages
- Superior Heat Resistance
The sintered metallic structure ensures efficient heat dissipation, minimizing brake fade even at temperatures exceeding 700°C . - Exceptional Wear Resistance
High metallic content and sintering process reduce wear rates by 30-40% compared to conventional brake shoes friction materials . - Noise and Vibration Control
Controlled porosity and alloy composition dampen vibrations, reducing squeal during braking. - High Mechanical Strength
Sintered metals provide compressive strength up to 450 MPa, ideal for heavy trucks and off-road vehicles. - Environmental Adaptability
Performs reliably in extreme climates, from sub-zero temperatures to desert heat .
Storage and Packaging
- Moisture Protection: Packaged in vacuum-sealed, moisture-proof materials to prevent oxidation of metallic components .
- Temperature Limits: Store in environments between -20°C and 50°C to avoid material degradation.
- Stacking Guidelines: Limit stacking to 4 layers to prevent deformation of sintered layers.
- Shelf Life: 36 months in unopened, original packaging.
Application of Brake Shoes Mixes
The brake shoes mixes are sintered under pressures of 50-100 MPa and temperatures up to 1200°C to bond metallic particles into a cohesive matrix. Post-production, they undergo rigorous quality checks for hardness (70-85 HRB) and shear strength (≥5.0 MPa). Custom formulations are available to meet OEM specifications, such as adjusting copper content for reduced rotor wear .
This advanced brake shoes mixture combines cutting-edge sintering technology with robust material science, making it the preferred choice for commercial vehicles operating in demanding environments.