Conveyor belts are used in many industries, transporting materials from one point to another. In environments where high temperatures are prevalent, standard conveyor belts may not withstand the heat, leading to premature wear and tear. This is where heat resistant conveyor belt comes into play.
In this buyer’s guide, we will explore the key considerations, materials, specifications, and applications of heat-resistant conveyor belts to help you make an informed decision.
What is a Heat Resistant Conveyor Belt?
Heat-resistant conveyor belts are specially designed to handle high temperatures, making them ideal for a variety of applications. These belts find applications in industries such as steel manufacturing, foundries, cement production, glassworks, and more, where elevated temperatures are constantly challenging.
Heat Resistant Conveyor Belt Materials
The most common materials used in heat-resistant conveyor belts are:
Rubber: Rubber is a good all-around material that can withstand temperatures up to 250°F (121°C). It’s also abrasion-resistant and has a good grip.
Silicone: Silicone can withstand even higher temperatures, up to 500°F (260°C). It’s also resistant to chemicals and oils.
PTFE (Teflon): PTFE is the king of heat resistance, able to handle temperatures up to 600°F (315°C). It’s also very slippery, making it ideal for applications where materials need to slide easily.
PBO (Polybenzoxazole): PBO is a newer material that offers excellent heat resistance (up to 800°F (427°C)) and chemical resistance. It’s also very strong and wear-resistant.
Specifications to Consider:
When buying a heat resistant conveyor belt, there are a few important specifications to consider:
Temperature rating: This is the most important specification, as it will determine what temperature the belt can safely handle. Different belts are designed for low, medium, or high-temperature applications.
Width: The width of the belt will need to be wide enough to accommodate the materials being conveyed.
Thickness: The thickness of the belt will depend on the weight of the materials being conveyed.
Tensile strength: The tensile strength of the belt will need to be strong enough to handle the tension of the materials being conveyed.
Cover thickness: The cover thickness is the thickness of the rubber or other material on the top and bottom of the belt. A thicker cover will provide better protection against wear and tear.
Heat Resistance Grade: Conveyor belts are classified into different heat resistance grades, such as T1, T2, T3, and T4. The grade indicates the maximum temperature the belt can withstand.
Cover Compounds: Consider the type of cover compound used on the belt. Common cover compounds include heat-resistant fabric, rubber, or a combination of both.
Applications for Heat Resistant Conveyor Belts
Heat-resistant conveyor belts are used in a variety of industries, including:
Steel Industry: Heat-resistant conveyor belts are essential for transporting hot metal components within steel mills.
Cement Manufacturing: Conveying materials through the various stages of cement production where high temperatures are involved.
Foundries: Handling hot and heavy materials in foundry processes, including casting and molding.
Glassworks: Moving glass products through high-temperature processes such as annealing and tempering.
Tips for Choosing the Right Heat Resistant Conveyor Belt
When choosing a heat-resistant conveyor belt, it’s important to consider the specific needs of your application. Here are a few tips:
Define Your Needs:
First, understand your needs such as;
- What is the maximum and peak temperature of the material you’ll be conveying? Different belt materials have varying heat resistance capacities.
- Is the material abrasive, sharp, oily, or sticky? Certain belt covers perform better with specific material properties.
- Consider belt speed, length, tension, and pulley diameter. Some belts might have limitations based on these factors.
Select the Appropriate Belt Type:
- Rubber Belts: These are commonly used for moderate heat applications.
- Neoprene Belts: Suitable for applications involving moderate heat and oil exposure.
- EPDM (Ethylene Propylene Diene Monomer) Belts: These belts are resistant to high temperatures and environmental factors.
- Silicone Belts: These have excellent heat resistance and are suitable for applications involving food processing.
Determine Belt Construction:
- Fabric Reinforcement: Choose the right type and number of fabric layers based on the load and tension requirements.
- Covers and Coatings: Consider special covers or coatings that provide additional protection against heat, abrasion, and chemicals.
Consider Material Compatibility:
Ensure the conveyor belt material is compatible with the substances it will come into contact with during operation, such as chemicals, oils, or abrasive materials.
Evaluate Thermal Conductivity:
Low thermal conductivity helps in minimizing heat transfer from the hot material to the belt. This is especially important in applications with extremely high temperatures.
Check Belt Flexibility and Tension Requirements:
Ensure that the chosen belt can handle the required tension and is flexible enough to navigate the conveyor system.
Consider Maintenance and Lifespan:
Evaluate the ease of maintenance and the expected lifespan of the conveyor belt. A durable and low-maintenance belt can result in cost savings over time.
Budget Considerations:
While it’s important to prioritize performance and durability, consider your budget constraints. Balance your requirements with cost-effectiveness.
Frequently Asked Questions
Are there any special considerations for food processing applications requiring heat resistant conveyor belts?
Yes, for food processing applications, it’s crucial to choose belts that comply with food-grade standards. Silicone belts are often a good choice, providing both heat resistance and compliance with food safety regulations.
How often should I perform maintenance on a heat-resistive conveyor belt?
The frequency of maintenance depends on factors such as the operating conditions, material conveyed, and overall wear and tear. Regular inspections, cleaning, and lubrication can help extend the lifespan of the belt. Follow the manufacturer’s guidelines for maintenance intervals.
Why is material compatibility important when selecting a heat resistant conveyor belt?
Ensuring the material is compatible with substances it will come into contact with during operation, such as chemicals, oils, or abrasive materials, prevents premature wear and tear.
How important is thermal conductivity in a heat-resistant conveyor belt?
Low thermal conductivity minimizes heat transfer from the hot material to the belt, which is crucial in applications with extremely high temperatures.
By following these tips, you can be sure to choose the right heat resistant conveyor belt for your needs. We hope this blog post has been helpful.