Why does the steel rolling equipment machinery vibrate?

Feb 27, 2024

There are many reasons why steel rolling equipment machinery vibrates during operation, including mechanical structure, process parameters, operation and maintenance, etc. The following is a detailed analysis of mechanical vibration problems in steel rolling equipment:

1. Mechanical structural factors:

Equipment design defects: If there are defects in the design of steel rolling equipment, such as unreasonable equipment structure, too large or too small fitting gaps between components, insufficient bearing support stiffness, etc., it may cause the equipment to vibrate during operation.

Equipment wear and tear: As the use time of steel rolling equipment increases, the parts inside the equipment will wear out, such as gears, bearings, etc. Wear will cause the fit gap to become larger, causing shock and vibration when the equipment is running.

Equipment imbalance: If there is an imbalance in the rotating parts of the steel rolling equipment, such as rolls, drive shafts, etc., centrifugal force will be generated during high-speed rotation, causing the equipment to vibrate.

2. Process parameter factors:

Rolling force fluctuations: During the rolling process, instability in the rolling force will cause vibrations in the rolling equipment. Rolling force fluctuations may be caused by uneven raw material size, uneven roll wear, changes in rolling speed, etc.

Improper rolling temperature control: The rolling temperature that is too high or too low will affect the stability of the rolling process and may cause vibrations in the rolling equipment.

Improper adjustment of rolling speed: Rolling speed that is too fast or slow may cause vibration in the rolling equipment. Improper speed adjustment will affect the stability of the rolling process and cause equipment vibration.

3. Operation and maintenance factors:

Irregular operation: If the operator operates irregularly during operation, such as improper starting and stopping operations, inaccurate adjustment parameters, etc., it may cause vibration in the steel rolling equipment.

Insufficient maintenance: Regular maintenance is essential to ensure equipment operates normally. Proper maintenance, such as poor lubrication, incomplete cleaning, etc., may prevent the equipment from vibrating.

Environmental factors: Environmental factors can impact steel rolling equipment, causing vibration.

Above is the four-row cylindrical roller bearing with C4 clearance.

For the above reasons, the following measures can be taken to reduce mechanical vibration of steel rolling equipment:

Optimize equipment design: During the equipment design stage, factors such as the structural rationality, stiffness, and strength of the equipment should be fully considered to avoid equipment vibration caused by design defects.

Strengthen equipment maintenance: Regularly maintain the steel rolling equipment, including replacing worn parts, cleaning the inside, checking equipment fasteners, etc., to ensure that the equipment is in good operating condition.

Control process parameters: During the rolling process, process parameters such as rolling force, rolling temperature, and rolling speed should be strictly controlled to maintain the stability of the process and reduce equipment vibration.

Improve operating level:

• Strengthen the training and management of operators.

• Improve the operating level and standard awareness of operators.

• Avoid equipment vibration caused by improper operation.

Improve environmental conditions: Keep the equipment operating environment clean and dry and reduce the impact of dust and other environmental factors on the equipment.

The most important thing is to choose rolling mill bearings with high quality and stable operation, which is an important factor in ensuring the smooth operation of rolling mill equipment.

To sum up, the mechanical vibration of steel rolling equipment is a complex problem that needs to be analyzed and solved from multiple aspects. By optimizing equipment design, strengthening equipment maintenance, controlling process parameters, improving operating levels, and improving environmental conditions, the mechanical vibration of steel rolling equipment can be effectively reduced, and the equipment's operational stability and production efficiency can be improved.