High Precision 4Hi 6Hi Reversing Cold Rolling Mill Factory Suppliers in China
The Four/Six-Hi Reversing Cold Rolling Mill is a high-precision industrial solution engineered for superior metal sheet processing. Integrating advanced PLC-based automation and digital DC speed control, this system ensures exceptional stability and closed-loop tension management, enabling manufacturers to achieve precise thickness tolerances and high-surface-quality finishes across diverse metallic materials.
Designed for versatility and operational efficiency, the mill features a sophisticated Automatic Gauge Control (AGC) system, including forward, feedback, and mass flow monitoring. With integrated roll bending capabilities and rapid roll-change mechanisms, it minimizes downtime and maximizes productivity, making it an essential asset for modern cold rolling production lines seeking optimal material yield and consistency.
Detailed Parameters
| Control System | PLC-based Process Automation | Speed Control | Full Digital DC Closed-Loop |
|---|---|---|---|
| Tension Control | Automatic Closed-Loop System | AGC Types | Forward, Feedback, & Mass Flow |
| Cooling System | Segmented Roll Cooling Control | Work Roll Adj. | Positive/Negative Bending |
| Intermediate Roll | Positive Bending & Shifting | Level Adjustment | Motor with Worm Gear Drive |
| Roll Change | Quick-Change System (Work/Inter) | Data Management | Digital Collection & Storage |
Key Advantages
Precision Gauge Control
Advanced AGC systems ensure consistent thickness through real-time monitoring and feedback adjustment.
Rapid Roll Replacement
Quick-change mechanisms for working and intermediate rolls significantly reduce operational downtime.
Dynamic Roll Bending
Positive/negative bending of rolls eliminates crown and ensures uniform strip flatness.
Intelligent Monitoring
Equipped with comprehensive data display, fault diagnosis, and real-time alarm systems.
Optimized Thermal Control
Segmented cooling control maintains roll temperature for prolonged tool life and quality.
Seamless Automation
PLC-driven automation synchronizes speed and tension for flawless production flow.
Product Gallery
Management Platforms
Process Automation
Centralized PLC control for synchronized rolling parameters and production logic.
Speed Synchronization
Digital DC drive systems for precise velocity matching across the production line.
Diagnostic Alerts
Real-time fault diagnosis and alarm system to prevent unplanned outages.
AGC Monitoring
Integrated feedback loop for continuous thickness and mass flow optimization.
Data Archiving
Secure storage and input/output data systems for quality traceability.
Hydraulic Control
Precision hydraulic management for roll bending and gap adjustments.
Investment Return Comparison
| Performance Metric | Standard Mill | Our Reversing Mill |
|---|---|---|
| Thickness Tolerance | Moderate | Ultra-High Precision |
| Roll Change Time | Slow / Manual | Rapid / Optimized |
| Automation Level | Semi-Automatic | Full PLC Digital Control |
| Surface Quality | Standard | Premium / Mirror Finish |
| Operational Cost | Higher Waste | Low Waste / High Yield |
Frequently Asked Questions
A 4-Hi mill uses two work rolls and two backup rolls, while a 6-Hi mill adds an extra set of intermediate rolls. This allows for better control of roll deflection and superior flatness for thinner or wider strips.
AGC uses forward, feedback, and mass flow monitoring to adjust the roll gap in real-time, ensuring the output strip maintains a consistent thickness regardless of material variations.
Yes, the system is designed for versatility in the metal processing industry, supporting various cold-rolling applications for steel, aluminum, and other compatible alloys.
Segmented cooling allows for precise temperature management across the roll surface, reducing thermal deformation and extending the lifespan of the work rolls.
The mill utilizes a full digital DC speed control system and closed-loop tension control to ensure the material is held at the optimal tension during direction changes.
Yes, it is equipped with a sophisticated data collection and fault diagnosis system that triggers alarms for immediate corrective action, reducing unplanned downtime.
