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Rollers play a key role in industrial production, especially in the paper, steel, plastics, textile and other industries. Due to long-term use and harsh working conditions, rollers may suffer different degrees of damage, common damage types include wear, cracks, corrosion, deformation and surface defects. It is more intuitive to understand how to determine whether a roll has reached its service life through a practical case. Below are practical examples from several different industries, including paper, steel and printing, which demonstrate the key factors and methods for determining the service life of rollers.
1、Paper industry: calender roll
Case background: In paper production lines, calender rollers are used to improve the smoothness and gloss of paper. With the increase of use time, the wear of the surface of the calendering roller will cause the quality of the paper to decline.
Judging basis:
Surface condition: Check the surface of the calendering roller for obvious wear marks, pits or corrosion. Use a microscope to check whether the surface roughness exceeds the standard.
Paper quality: Whether the produced paper has corrugations, streaks or reduced gloss, which may be a direct result of calendering roller wear.
Maintenance records: Check the maintenance records of the calendering roller, including when it was last repaired or replaced, and whether the wear rate has increased.
Conclusion: When the surface wear of the calendering roll is serious, the paper quality decreases significantly, and the maintenance cost exceeds the cost of the new roll, it indicates that the calendering roll has reached its service life.
2、Steel industry: cold roll
Case background: Cold rolls are used in steel production to roll steel plates to the desired thickness, and their surface hardness and wear resistance are critical to product quality.
Judging basis:
Hardness change: The surface hardness of the cold roll is regularly measured and compared with the hardness value of the new roll. A significant decrease in hardness may indicate material fatigue.
Surface defects: Check for cracks, peeling or pits that can affect the surface quality of the rolled steel sheet.
Production efficiency: Observe whether the rolling speed is reduced or the thickness of the steel plate is uneven due to the deterioration of the performance of the roller.
Conclusion: When the hardness of the cold roll decreases, serious defects appear on the surface, and the production efficiency and product quality are negatively affected, it indicates that the cold roll has reached its service life.
When repairing the damaged roll, the most appropriate repair method should be selected according to the specific condition of the damage and the use environment of the roll. As a thermal spraying company, Jinan Tianmeng Thermal spraying company focuses on customers, constantly improves service quality, and is committed to providing customers with high-quality surface repair solutions. The company always takes "customer first" as its business philosophy, and constantly optimizes products and services to meet the changing needs of customers to ensure the smooth progress of projects and coating quality.
Rollers play a key role in industrial production, especially in the paper, steel, plastics, textile and other industries. Due to long-term use and harsh working conditions, rollers may suffer different degrees of damage, common damage types include wear, cracks, corrosion, deformation and surface defects. It is more intuitive to understand how to determine whether a roll has reached its service life through a practical case. Below are practical examples from several different industries, including paper, steel and printing, which demonstrate the key factors and methods for determining the service life of rollers.
1、Paper industry: calender roll
Case background: In paper production lines, calender rollers are used to improve the smoothness and gloss of paper. With the increase of use time, the wear of the surface of the calendering roller will cause the quality of the paper to decline.
Judging basis:
Surface condition: Check the surface of the calendering roller for obvious wear marks, pits or corrosion. Use a microscope to check whether the surface roughness exceeds the standard.
Paper quality: Whether the produced paper has corrugations, streaks or reduced gloss, which may be a direct result of calendering roller wear.
Maintenance records: Check the maintenance records of the calendering roller, including when it was last repaired or replaced, and whether the wear rate has increased.
Conclusion: When the surface wear of the calendering roll is serious, the paper quality decreases significantly, and the maintenance cost exceeds the cost of the new roll, it indicates that the calendering roll has reached its service life.
2、Steel industry: cold roll
Case background: Cold rolls are used in steel production to roll steel plates to the desired thickness, and their surface hardness and wear resistance are critical to product quality.
Judging basis:
Hardness change: The surface hardness of the cold roll is regularly measured and compared with the hardness value of the new roll. A significant decrease in hardness may indicate material fatigue.
Surface defects: Check for cracks, peeling or pits that can affect the surface quality of the rolled steel sheet.
Production efficiency: Observe whether the rolling speed is reduced or the thickness of the steel plate is uneven due to the deterioration of the performance of the roller.
Conclusion: When the hardness of the cold roll decreases, serious defects appear on the surface, and the production efficiency and product quality are negatively affected, it indicates that the cold roll has reached its service life.
When repairing the damaged roll, the most appropriate repair method should be selected according to the specific condition of the damage and the use environment of the roll. As a thermal spraying company, Jinan Tianmeng Thermal spraying company focuses on customers, constantly improves service quality, and is committed to providing customers with high-quality surface repair solutions. The company always takes "customer first" as its business philosophy, and constantly optimizes products and services to meet the changing needs of customers to ensure the smooth progress of projects and coating quality.
