A Detailed Guide to Prolonging the Life of Corrugating Rolls

Corrugating rolls are critical components in the production of corrugated cardboard, playing a crucial role in forming the fluted medium that gives the cardboard its strength. Extending the life of corrugating rolls not only enhances production efficiency and reduces costs but also ensures consistent product quality. Here is a detailed professional guide to achieving this goal:

1. Regular Maintenance and Inspection

Scheduled Maintenance

• Daily Checks: Inspect the rolls for any visible signs of wear, damage, or contamination.
• Weekly Maintenance: Clean the rolls thoroughly to remove any buildup of adhesive or paper dust.
• Monthly Inspection: Measure the roll diameters and check for any signs of uneven wear.

Detailed Inspection

• Visual Inspection: Look for any cracks, chips, or signs of corrosion.
• NDT Testing: Use non-destructive testing methods such as ultrasonic or magnetic particle inspection to detect internal flaws.

2. Corrugating Roll Storage

a. Corrugating rolls are not solid on the surface and are susceptible to moisture penetration from the environment, leading to corrosion and coating damage. They should be stored in a dry environment.

b. Upon delivery, the corrugating rolls are coated with silicone oil, effective for up to three months. If not used for an extended period, regularly reapply silicone oil to prevent moisture penetration and corrosion.

c. If the rolls are not in use and stored in a warehouse, clean the surface of any contaminants and apply silicone oil for protection.

3. Use of Corrugated Paper

a. The sand content in corrugated paper directly affects the lifespan of the corrugating rolls. High-hardness sand particles can cause dents and severe coating damage during the corrugation process.

b. Use corrugated paper with an ash content of less than 4%.

4. Intermittent Control of Corrugating Rolls

a. Regularly check the parallelism of the corrugating rolls, recommended once a month.

b. Ensure proper installation to avoid minimal gaps between the corrugating rolls and suction hood, which can cause abnormal wear.

c. The suction hood may loosen due to machine vibration. Regularly check the gap to avoid abnormal wear.

d. Regularly check the gaps between the corrugating rolls, pressure rolls, and glue rolls to prevent abnormal wear.

e. Vibration can loosen wind blades, causing T-shaped grinding areas to scratch the coating on the suction grooves. Regularly secure the wind blades.

f. During production, use the minimum cylinder or air pressure for the corrugating rolls and pressure rolls to avoid unnecessary wear.

g. When changing from a large to a small width, reduce the air or oil cylinder pressure accordingly to prevent excessive wear, especially when the rolls are in direct contact without paper.

5. Temperature Control

a. Before steaming the corrugating rolls, operate them for a few minutes to avoid abnormal deformation.

b. Regularly check the temperature of the corrugating rolls and pressure rolls to prevent temperature drops due to condensation.

c. If temperature anomalies are detected, ensure the correct position of the siphon pipe for smooth condensate discharge.

6. Adhesive Management

• Use high-quality adhesives that do not contain abrasive particles.
• Ensure the adhesive application system is well-maintained to avoid over-application, which can cause buildup on the rolls.

7. Material Quality Control

• Use high-quality paper with consistent moisture content to reduce stress on the rolls.
• Avoid using recycled paper with contaminants that can damage the rolls.

8. Eccentricity Adjustment

• Regularly check the eccentricity of the rolls to ensure even force distribution during rotation.
• Use professional equipment and techniques to adjust the eccentricity of the rolls, preventing uneven wear caused by eccentricity.

9. Training and Skill Development

• Train operators on the best practices for operating and maintaining corrugating rolls.
• Encourage regular skill development to stay updated with the latest techniques and technologies.

10. Corrugating Roll Cleaning

a. During production, adhesive and paper fibers may accumulate on the surface of the corrugating rolls. Clean the rolls promptly after production to prevent hardened adhesive from damaging the surface coating.

b. Do not use water to clean the rolls when they are hot.

c. After cooling, use water or gas to clean the rolls.

d. After cleaning, apply silicone oil to protect and maintain the roll surface.

11. Manufacturer Support and Service Agreements

• Establish service agreements with roll manufacturers for regular maintenance and emergency support.
• Leverage the expertise of vendors for advanced repair and refurbishment services.

Welcome to contact:[email protected]

Web:Shanghai Dasong Corrugating Roll Co., Ltd. (rmm-dasong.com)

WEB | Youtube | Instagram | Facebook