20-hi Cold Rolling Mill Overview

The 20-hi cold rolling mill is a high-precision rolling equipment in the field of metal processing. It achieves the rolling of extremely thin strips (with a thickness of up to 0.001mm) through a multi-roll system structure and is widely used in the production of high-end materials such as stainless steel, silicon steel, and copper foil. Its core design, through the stepped arrangement of 20 rolls, disperses the rolling force and significantly enhances the plate shape control ability.
Technical features and advantages
Multi-roller system structure
The 1-2-3-4-10 roll system configuration (1 working roll +2 first intermediate rolls +3 second intermediate rolls +4 third intermediate rolls +10 support rolls) is adopted, effectively reducing the influence of rolling force on the lateral deformation of the strip, ensuring that the thickness tolerance is within ±0.001mm.
Intelligent control system
Integrating hydraulic AGC (Automatic Thickness Control), plate shape detector and dynamic bending roll technology, it can adjust the roll gap and rolling pressure in real time to meet the requirements of different materials and processes.
High-performance application scenarios:
In the field of new energy: Producing copper foil and aluminum foil for lithium batteries to meet the demand for extremely thin current collectors in high-energy-density batteries.
Precision electronics: Rolled ultra-thin stainless steel strips, used as base materials for flexible circuit boards (FPC).
Industry impact and development trends
With the explosive growth of the 5G and new energy vehicle industries, the 20-hi cold rolling mill has become a key equipment in improving material properties, such as reducing the loss of grain-oriented silicon steel. In the future, the rolling parameters will be optimized through AI algorithms to further reduce energy consumption and extend the service life of the roll system.