Conveyor Belt scratches are one of the common issues in belt conveyor systems. Timely and effective repairs not only restore the belt to normal operation but also extend its service life, reducing downtime and resource wastage. As a technician involved in roller lagging and conveyor belt splicing/repair, here are some common methods and steps for repairing belt damages:
1. Cold Vulcanization Repair
Cold vulcanization is ideal for long-distance scratches and localized belt damage.
Repair Process: Grind the damaged area and clean it with a cleaning agent to remove contaminants.
Apply a layer of cold vulcanizing cement and let it dry completely. Apply a second layer, and when it is semi-dry, adhere the CN-layer repair strip to the damaged area.
Use a roller to press the repair strip firmly for strong adhesion.
Advantages: The repair strip’s corrosion resistance and wear resistance, combined with the high-strength bonding properties of cold vulcanizing glue, provide excellent protection for the damaged section of the belt.
2. Rubber Repair Agent Quick Fix
This method is suitable for emergency repairs of surface wear, localized damage, or sealing belt joints.
Repair Process:
Grind the damaged area and clean it thoroughly.
Directly apply the rubber repair agent to fill and smooth the damaged section.
Advantages:
This method requires minimal materials, is simple to execute, cures quickly at room temperature, and allows the belt to be used immediately after repair.
3. Hot Vulcanization Repair
Hot vulcanization is recommended for severe damage, such as tears in steel cord conveyor belts, requiring high-strength bonding.
Repair Process: Prepare the damaged area and apply hot vulcanizing glue.
Attach an uncured rubber sheet to the damaged section.
Use a vulcanizing machine to apply heat and pressure, fusing the uncured rubber and belt into a single unit.
Advantages: Hot vulcanization provides the strongest and most durable repair.
Disadvantages: It is labor-intensive, time-consuming, and requires specialized equipment and expertise.
Recommendations for Belt Repair
Cold Vulcanization: It is the most recommended method due to its strong adhesion and ease of application, making it ideal for most repair scenarios.
Hot Vulcanization: For steel cord conveyor belts or when the repair needs to handle high tension and loads, hot vulcanization is the premium option.
Rubber Repair Agent: Used for small-scale or emergency repairs.
Choosing the right repair method and materials based on the specific damage to the belt is critical to maintaining efficiency and prolonging the life of the belt conveyor system.