Extend the service life of work rolls and increase production

Work rolls are very important mechanical equipment in rolling mills, and extending their service life is of great significance to improving production efficiency and reducing costs. This article will introduce how to extend the service life of work rolls through correct material selection, precise manufacturing processes, good surface treatment, correct installation and maintenance, rational use, keeping clean, regular replacement and technical upgrades.

Keyword:work rolls, life of work rolls

work rolls

Correct selection of materials

Material selection is one of the key factors in the service life of work rolls. When selecting work roll materials, factors such as material strength, wear resistance, corrosion resistance, and fatigue resistance need to be considered. At the same time, it is also necessary to comprehensively consider factors such as the working environment of the work roll and the requirements of the workpiece to select the appropriate material.

Precise manufacturing process

The manufacturing process also has a great impact on the service life of the work roll. Precise manufacturing technology can ensure the accuracy and stability of the work roll and increase the service life of the work roll. During the manufacturing process, strict quality control and testing of work rolls are required to ensure that their quality and performance meet the requirements.

Good surface treatment

Surface treatment can enhance the wear resistance and corrosion resistance of the work roll and increase its service life. Commonly used surface treatment methods include shot peening, carburizing and quenching, nitriding treatment, etc. When selecting a surface treatment method, factors such as the material and use environment of the work roll need to be considered to ensure the effectiveness and reliability of its surface treatment.

Proper installation and maintenance

Proper installation and maintenance are critical to the service life of your work rolls. When installing the work roll, it is necessary to ensure its accuracy and stability to avoid problems such as deflection and vibration. In daily use, regular inspection and maintenance of the work roll is required, including lubrication, cleaning, adjustment, etc., to ensure its normal operation and service life.

fair use

Reasonable use can reduce wear and damage of the work roll and increase its service life. During operation, it is necessary to avoid overloading and overloading, and avoid problems such as bending and deformation of the work roll. At the same time, factors such as rolling speed and temperature need to be reasonably controlled to ensure the normal operation and performance of the work rolls.

keep clean

Keeping the work rollers clean avoids corrosion and contamination and increases their service life. During work, it is necessary to prevent iron filings, dust, oil and other impurities from entering the work roller to avoid damage to it. At the same time, the work roll needs to be cleaned and maintained regularly to ensure its cleanliness and performance.

Regular replacement

Regular replacement can prevent the service life of the work roll from being affected by wear and aging. In a steel rolling mill, a reasonable replacement plan needs to be developed based on the use and wear degree of the work rolls to ensure their timely replacement and extension of their service life.

Technology upgrade

With the continuous advancement of science and technology, new technologies and new materials are constantly emerging, which has greatly improved the service life of work rolls. Through technological upgrades, the work roll can be optimized and improved to improve its performance and service life. For example, the use of advanced surface treatment technology and the use of new wear-resistant materials can increase the service life of the work roll.

When using work rolls, you need to pay attention to the following points:

Operational safety:

Before replacing the work roll, the power supply to the main machine and all surrounding auxiliary rotating equipment must be cut off, and the operator command must be returned to the zero position. It is strictly prohibited to stand on roller conveyors and push beds without power outage.

Dedicated operation:

When changing the roller, there must be a dedicated person to command and operate it. The operator must obey the command of the commander and ring the bell for one minute before starting the roller changing equipment. Only after confirming that it is safe and safe can the equipment be started.

Check the wire rope: Check all wire ropes carefully before changing the roller. It is forbidden to use broken strand wire ropes.

Avoid cross operations: When the support roller is raised and lowered, you must confirm that no one is working around the lower support roller before inching up and down. When pulling down the support roller to lift it up and down, you must make sure that the shaft end clamping plate is fully opened to prevent the bolt from breaking and causing injury. Before the upper support roller returns, it must be confirmed that there is no one around the upper support roller and the water cutting plate before commanding the operation.

Check the status of the equipment: before pulling out the full set of support rollers, you must confirm whether the water cutting plate is open, whether all clamping plates are open, and there is no one around before you can command the inching to pull out.

Pay attention to personal safety: When commanding the crane to disassemble and install the support roller lifting pin, the command gesture must be clear to avoid injury to people due to broken wire ropes. When cleaning the support roller ladder pad slide frame and foreign objects on the track, a safety guardian must be installed to prevent foreign objects from falling on the cross operation and injuring people. It is strictly forbidden to stand under the pressing hydraulic cylinder to prevent the cylinder from falling and injuring people.

Avoid accidents: It is strictly forbidden to stand directly under the universal shaft and flat head to prevent accidents caused by failure of the clamping device. It is strictly forbidden to stand around the cardan shaft balancing device to prevent accidents.

Confirm the operation status: Before installing the support roller, you must confirm whether there is anyone working in the track, carriage and archway before you can install the roller. Before balancing the upper support roller, you must confirm that there is no one on the water cutting board before directing the operation.

The above are some things to pay attention to when using work rolls. Engineers in rolling mills must strictly abide by relevant regulations and operating procedures during their work to ensure work safety. At the same time, the equipment must be inspected and maintained regularly to ensure the normal operation of the equipment.

 

MM GROUP is one of the professional roll manufacturing base in China, which supply all kinds of large-size rolls for iron and steel enterprises with production capacity of 100,000 tons of all kinds of hot strip mill rolls, section mil rolls, rod mil rolls, cold rolling m rolls, casting and forging backup rolls.

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