Introduction to Corundum in Brake Shoes Formulas
Corundum, a crystalline form of aluminum oxide (Al₂O₃), has emerged as a significant component in brake shoes formulas. Its unique properties make it a valuable addition to the Brake Shoes Mixture, enhancing the performance of Brake Shoes Friction Materials.
Technical Parameters
| Parameter | Value |
|---|---|
| Chemical Formula | Al₂O₃ |
| Density | Approximately 3.95 – 4.1 g/cm³ |
| Mohs Hardness | 9 (very hard, second only to diamond on the Mohs scale) |
| Melting Point | Around 2040 °C |
| Thermal Conductivity | 30 – 46 W/(m·K) |
Advantages
1. High Friction Performance
Corundum’s extreme hardness allows it to provide a high and consistent coefficient of friction in Brake Shoes Mixes. This ensures reliable and efficient braking, reducing the stopping distance of vehicles. When the brake shoes come into contact with the brake drum or disc, the hard corundum particles bite into the surface, generating the necessary frictional force to slow down or stop the vehicle.
2. Wear Resistance
Due to its high hardness, corundum is highly resistant to wear. In the harsh environment of braking systems, where there is continuous friction and heat generation, corundum helps to maintain the integrity of the brake shoes. This results in a longer service life for the brake shoes, reducing the frequency of replacement and maintenance costs.
3. Thermal Stability
With a high melting point and good thermal conductivity, corundum can withstand the high temperatures generated during braking. It helps to dissipate heat quickly from the braking surface, preventing the brake shoes from overheating. Overheating can lead to brake fade, a phenomenon where the braking performance deteriorates due to a decrease in the coefficient of friction. By maintaining thermal stability, corundum ensures consistent braking performance even under heavy or continuous braking conditions.
4. Chemical Inertness
Corundum is chemically inert, which means it does not react easily with other substances in the Brake Shoes Ingredients or in the surrounding environment. This property helps to preserve the chemical stability of the Brake Shoes Formula, preventing degradation and ensuring long – term performance.
Storage and Packaging
Storage
- Dry Environment: Corundum should be stored in a dry place to prevent moisture absorption. Moisture can cause clumping or affect the chemical properties of the material, which may in turn impact its performance in the brake shoes formula.
- Temperature Control: It is advisable to store corundum at a stable temperature. Extreme temperature fluctuations can potentially cause physical changes in the material.
- Separation from Reactive Substances: Keep corundum away from substances that could react with it, such as strong acids or alkalis, to maintain its chemical integrity.
Packaging
- Sealed Containers: Corundum is typically packaged in sealed bags or containers to prevent the ingress of moisture and contaminants. Common packaging materials include plastic bags, drums, or bulk bags, depending on the quantity.
- Labeling: Each package should be clearly labeled with the product name, batch number, technical specifications, and any relevant safety information to ensure proper handling and identification.
In conclusion, corundum plays a crucial role in brake shoes formulas, contributing to the high – performance and reliability of braking systems. By understanding its technical parameters, advantages, and proper storage and packaging methods, manufacturers can effectively utilize corundum in their brake shoes production.