Rolling Mill Flywheel

High-Inertia Flywheel for Steel Rolling Mills

The Rolling Mill Flywheel is a critical energy storage and buffering component used in steel rolling mills. It plays an essential role in stabilizing rotational speed, balancing load fluctuations, and reducing peak power demand during heavy-duty rolling operations. By storing kinetic energy during low-load periods and releasing it during high-load moments, the flywheel ensures smooth and stable operation of the rolling mill drive system.

Rolling mill flywheels are widely applied in hot rolling mills, section steel rolling mills, bar and wire rod mills, plate mills, and seamless tube rolling lines, especially in production lines with large impact loads and frequent speed changes.

Applications

The Rolling Mill Flywheel is commonly used in:

• Hot rolling mills

• Section steel rolling mills

• Bar and wire rod production lines

• Plate and strip rolling mills

• Seamless tube rolling mills

• Reversible rolling mills and roughing stands

It is especially suitable for rolling mills with high starting torque, heavy load impact, and intermittent rolling conditions.

Functions and Advantages

The main functions of the Rolling Mill Flywheel include:

• Energy Storage & Release
  Stores excess energy when the motor load is low and releases it instantly during rolling peaks, reducing power fluctuation.

• Load Balancing
  Effectively smooths impact loads caused by biting, rolling, and sudden load changes.

• Reduced Motor Capacity Requirement
  Allows the use of smaller motor capacity while still meeting peak torque demands, reducing initial investment costs.

• Stable Rolling Speed
  Improves speed stability of the rolling mill, enhancing product dimensional accuracy and surface quality.

• Extended Equipment Service Life
  Reduces mechanical shock and electrical stress on motors, gearboxes, and couplings.

Working Principle

During rolling mill operation, the flywheel rotates synchronously with the drive system. When the rolling load is low, the motor accelerates the flywheel, storing kinetic energy. When the rolling load increases suddenly, the flywheel releases stored energy, assisting the motor in driving the mill.

This energy buffering effect significantly reduces power peaks, improves system efficiency, and ensures smooth rolling performance under heavy-duty conditions.

Design and Manufacturing Features

• High-Inertia Design
  Optimized mass distribution ensures maximum energy storage capacity with stable rotation.

• High-Strength Materials
  Manufactured from high-quality carbon steel or alloy steel to ensure strength, fatigue resistance, and long service life.

• Precision Machining
  Dynamic balancing and precision machining guarantee smooth operation at high rotational speeds.

• Customizable Structure
  Flywheel dimensions, weight, and inertia can be customized according to rolling mill capacity, motor power, and production requirements.

• Excellent Safety Performance
  Strict quality control and balance testing ensure safe and reliable long-term operation.

Production Process

• Raw material selection

• Forging or casting

• Rough machining

• Heat treatment

• Finish machining

• Dynamic balancing test

• Surface protection and packaging

Each flywheel undergoes strict inspection to ensure compliance with international quality standards.

Quality Assurance

• Dynamic balance test report

• Dimensional inspection report

• Material certificate

• Heat treatment report (if required)

All products are manufactured under a strict quality management system to ensure stable performance and long service life.

Packing & Delivery

• Packed in strong export-standard wooden cases or steel frames

• Anti-rust treatment applied before shipment

• Suitable for sea, land, and multimodal transportation

• Delivery time: typically 30–45 days depending on design and quantity

Why Choose Our Rolling Mill Flywheel

• Rich experience in rolling mill equipment supply

• Proven performance in steel plants worldwide

• Custom engineering solutions for different rolling lines

• Stable quality and competitive pricing

• Professional technical support and after-sales service

Our Rolling Mill Flywheels are designed to help steel producers improve energy efficiency, reduce operational costs, and ensure stable high-quality rolling production.