Le 3-roll plate rolling machine is one of the most common types and is suitable for medium-thick plates. According to the different structures, the 3-roll plate rolling machine can be further divided into symmetrical and asymmetrical (initial clamping) types. Symmetrical 3-roll plate rolling machines are usually used for applications that require high precision and uniform bending, while asymmetrical types are suitable for bending heavy and thick materials.

Le 4-roll plate rolling machine is usually used for thicker plates and complex geometries. This type of rolling machine has higher precision and flexibility, and can handle larger plate thicknesses and more complex bending tasks.

In addition, plate rolling machines can also be divided into mechanical and hydraulic types according to different working principles.

Steel is one of the most common rolled materials and is suitable for shipbuilding, boilers, chemical equipment and other fields. Other available materials include stainless steel, aluminum, carbon steel, copper, some alloy materials, etc.

A metal plate rolling machine usually consists of three or four rollers, which can be fixed or adjustable.

In a 3-roll plate rolling machine, the rollers are arranged in a triangle, with the upper roller in the middle and the lower rollers on both sides. As the metal plate passes between the upper and lower rollers, it is gradually bent into the desired shape by the pressure and friction of the rollers.

UN 4-roll plate rolling machine adds a side roller to the three-roll type, which not only pre-bends the metal plate, but also provides additional support and stability during the bending process.

As the metal plate passes through the rollers, it is subjected to pressure applied by the rollers. This pressure can be provided hydraulically or mechanically. The rotation and movement of the rollers gradually deform the metal plate in the continuous bending process, eventually forming the desired shape.

• Before starting operation, the operator should have received proper training, fully understand the structure, function and performance of the metal plate rolling machine, and understand the machine's controls, emergency stop function and safety protocols.
• When in use, the operator should wear well-fitting work clothes, safety glasses, protective gloves, steel shoes and ear plugs to protect against flying debris, noise and other potential hazards. Avoid wearing loose or fragile jewelry.
• Before each use, conduct a comprehensive inspection of the plate rolling machine to ensure that all parts and components are in good working condition, especially the rollers, bearings, hydraulic systems and emergency devices.
• Before starting the rolling process, ensure that the workpiece is properly placed and secured to prevent sliding or shifting. Use appropriate lifting equipment (such as cranes or forklifts) to move heavy or oversized materials, ensuring that the material weight is within the machine's carrying capacity.

• Keep the rolling machine clean, especially around the moving parts and rollers to prevent dust, oil and impurities from accumulating.
• Regularly lubricate the moving parts of the machine, including the main drive, reducer, upper roller lifting guide, rollers on both sides of the sliding bearing, etc.
• Regularly check the various parts of the machine, including bearings, gears, rollers, frames, hydraulic systems, etc.
• If any problems or signs of wear are found, repairs or maintenance should be arranged to avoid more serious problems.

1. Uneven plate thickness is one of the most common problems. Possible causes include inconsistent materials, incorrect roller pressure, or operator error. The solution is to check the consistency of the material, adjust the roller pressure, or retrain the operator.

2. The plate may be misaligned during the rolling process, resulting in a final product that does not meet the requirements. This is usually caused by the plate not being properly aligned or the roller position being improperly adjusted.

3. Overloading can cause excessive wear or damage to the rollers, and may even cause equipment failure. Ensuring that the load capacity of the equipment is not exceeded is an important measure to avoid this problem.