When choosing a rolling mill, you need to consider the following key factors:
Production requirements
Determine the required rolled product specifications, including the size range and accuracy requirements of plates, strips, bars, wires, etc.
Evaluate production capacity, that is, the output that needs to be produced per hour or day.
Rolling mill type
Common types of rolling mills include two-roll mills, four-roll mills, six-roll mills, etc. Different types of rolling mills differ in rolling capacity, plate shape control and accuracy.
For example, four-roll mills are generally suitable for medium and thick plate rolling, and six-roll mills can provide better plate shape control in thin plate rolling.
Rolling process
Consider whether it is hot rolling or cold rolling. Different processes have different requirements for rolling mills.
Understand the pass arrangement in the rolling process (pass arrangement refers to the order and distribution of the steel billet through multiple rolling passes during the rolling process. Pass arrangement needs to consider many factors, such as steel type, billet size, finished product size requirements, rolling mill equipment capacity, etc.
Reasonable pass arrangement can ensure the smooth progress of the rolling process and improve product quality and production efficiency), reduction system (the reduction system involves the amount of reduction of the steel billet by the roller in each rolling pass.
The size of the reduction directly affects the rolling force, rolling torque, deformation degree of the rolled piece, and dimensional accuracy of the product. When determining the reduction system, certain principles should usually be followed.
For example, under the premise of ensuring equipment capacity and product quality, try to use a larger pass reduction to improve production efficiency; at the same time, pay attention to the reasonable distribution of reduction between passes to avoid excessive rolling force or uneven deformation in some passes) and other process parameters to determine whether the performance of the rolling mill can meet the requirements.
Control accuracy
If the product has high requirements for dimensional accuracy and surface quality, it is necessary to choose a rolling mill with a precise control system, such as automatic thickness control (AGC), automatic flatness control (AFC), etc.
Equipment reliability and maintenance
Choose a manufacturer with a good reputation and reliable quality to ensure the long-term stable operation of the rolling mill.
Understand the maintenance requirements and spare parts supply of the equipment to reduce downtime and maintenance costs.
Energy efficiency
Pay attention to the energy consumption of the rolling mill and choose energy-saving equipment to reduce production costs.
Budget
Determine the specifications and configuration of the rolling mill according to the project budget, and try to control the investment cost while meeting production needs.
Installation and commissioning
Ensure that the supplier can provide professional installation and commissioning services to ensure the smooth operation of the rolling mill.
After-sales service
Choose a manufacturer that can provide timely and effective after-sales service and technical support to solve problems that may arise during use.
Taking the above factors into consideration, the most suitable rolling mill can be selected according to specific production needs and conditions to achieve efficient and high-quality rolling production.
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