Four Six Hi Reversing Cold Rolling Mill Factory China Suppliers
The Four/Six-Hi Reversing Cold Rolling Mill represents the pinnacle of precision metal processing, engineered to deliver superior thickness accuracy and surface quality. By integrating advanced PLC-driven basic and process automation, this system ensures seamless production cycles with a high degree of stability, making it an essential asset for high-end metal sheet manufacturing.
Equipped with a sophisticated closed-loop control system for tension and speed, the mill utilizes full digital DC speed control to eliminate fluctuations. The integration of comprehensive Hydraulic Automatic Gauge Control (AGC) and roll bending technologies allows for unprecedented control over the rolling profile, ensuring that every coil meets stringent industrial tolerances.
Detailed Parameters
| Automation System | PLC-based Process & Basic Automation | Speed Control | Full Digital DC Closed-Loop Control |
|---|---|---|---|
| Gauge Control | Hydraulic AGC (Forward, Feedback, Mass Flow) | Tension Control | Automatic Closed-Loop Tension System |
| Cooling Method | Roll Segmented Cooling Control | Working Roll Adj. | Positive/Negative Bending Control |
| Intermediate Roll | Positive Bending & Shift Control | Level Adjustment | Motor-driven Worm & Gear Mechanism |
| Roll Change | Quick Change for Working & Intermediate Rolls | Data Management | Integrated Collection, Display & Storage |
Key Advantages
Precision Gauge Control
Multi-mode AGC including forward, feedback, and mass flow monitoring for extreme thickness precision.
Rapid Roll Change
Optimized quick-change systems for working and intermediate rolls to minimize production downtime.
Advanced Automation
Matured PLC automation reduces manual intervention and increases operational consistency.
Real-time Monitoring
Integrated data display and storage system with an advanced fault diagnosis and alarm interface.
Profile Optimization
Precision bending and shift controls for intermediate and working rolls to ensure flatness.
Dynamic Adjustment
Quick rolling level adjustments via motor and worm gear for agile product transitions.
Product Gallery
Management Platforms
Process Automation
Fully integrated PLC control for streamlined production workflows.
Motion Control
Digital DC speed and closed-loop tension synchronization.
Diagnostics System
Real-time fault detection and instant alarm notification system.
Quality Monitoring
Mass flow AGC monitoring for constant gauge quality control.
Data Archiving
Comprehensive storage and I/O data management for traceability.
Hydraulic Logic
Precision hydraulic control for roll bending and shifting.
Investment Return Comparison
| Performance Metric | Standard Rolling Mill | Four/Six-Hi Reversing Mill |
|---|---|---|
| Thickness Tolerance | Moderate | Ultra-High Precision |
| Changeover Time | High / Manual | Low / Quick-Change System |
| Surface Quality | Variable | Consistent & Superior |
| Energy Efficiency | Standard | Optimized DC Speed Control |
| Maintenance Cost | Frequent | Reduced via Fault Diagnosis |
Frequently Asked Questions
Reversing mills allow the material to pass through the same set of rolls multiple times, providing greater flexibility in reduction ratios and reducing the number of required mill stands.
The Automatic Gauge Control (AGC) uses forward and feedback loops to adjust roll gaps in real-time, eliminating thickness variations and ensuring a uniform product.
The PLC handles both basic and process automation, coordinating speed, tension, and hydraulic systems to ensure the mill operates within optimized parameters.
Through positive/negative bending of working rolls and shift control of intermediate rolls, the mill compensates for roll deflection to maintain a flat profile.
Yes, its flexible speed and tension control, combined with adjustable roll bending, make it suitable for a wide range of metal alloys in the metal cutting and processing tool industry.
The system utilizes specialized mechanical interfaces and motor-driven adjustments that significantly reduce the time needed to swap working and intermediate rolls.
