Φ220/Φ600×800 4 hi cold rolling mill
Brand name: HANI
Packing Details : Wooden box with fumigation or Wooden Fram or Steel Frame
Delivery Details: 30~60days or Based on the quantity
Shipping: Sea freight、Land freight、Air freight
HANI focuses on cold rolling mill equipment technology, safeguarding your production.
Product Details
As a leading manufacturer in the metallurgical machinery sector, we present our flagship Φ220/Φ600×800 4 hi cold rolling mill, engineered for exceptional precision and performance in metal strip processing applications. This advanced 4 hi cold rolling mill represents the pinnacle of cold rolling technology, offering superior control, efficiency, and versatility for modern metalworking facilities seeking to maximize productivity while maintaining the highest quality standards.
The 4 hi cold rolling mill configuration provides significant advantages over conventional two-high mills, particularly in achieving precise thickness control, excellent surface finish, and enhanced shape control for a wide range of materials. Our Φ220/Φ600×800 model has been meticulously designed to deliver outstanding performance across various industrial applications, from precision strip production to specialized metal forming operations.
Technical Specifications and Performance Capabilities
Our Φ220/Φ600×800 4 hi cold rolling mill incorporates cutting-edge engineering solutions to address the most demanding production requirements. With a maximum rolling force of 600 tons and processing speeds of 80-150 meters per minute, this 4 hi cold rolling mill system delivers exceptional throughput without compromising on precision or quality control.
| Technical Parameter | Specification | Performance Value |
|---|---|---|
| Model | Φ220/Φ600×800 | Four-high reversible configuration |
| Work Roll Diameter | Φ220mm | Hardened and ground to precision tolerances |
| Backup Roll Diameter | Φ600mm | High-strength forged steel construction |
| Roll Body Length | 800mm | Maximum strip width capacity |
| Material Input Range | 3.5×700mm | Thickness × Width (mm) |
| Finished Product Range | 0.2×700mm | Thickness × Width (mm) |
| Maximum Rolling Force | 600 Tons | Hydraulic pressure system |
| Rolling Speed | 80-150 m/min | Variable frequency control |
| Drive Configuration | Work roll or backup roll drive | Configurable based on application |
| Thickness Control | Hydraulic AGC | Automatic gauge control system |
| Main Motor Power | 361-500 kW | Adjustable based on material requirements |
| Coiler System | Hydraulic four-prism cone | Quick-change mandrel design |
| Control System | Eurotherm 590 digital + PLC | Full digital control architecture |
Advanced Engineering Features of Our 4 hi Cold Rolling Mill
The Φ220/Φ600×800 4 hi cold rolling mill incorporates numerous technological innovations that set it apart from conventional rolling equipment. The four-high configuration, with smaller work rolls supported by larger backup rolls, enables processing of harder materials and thinner gauges with superior flatness control compared to two-high mill designs.
Hydraulic AGC System
Our hydraulic Automatic Gauge Control (AGC) system ensures consistent thickness tolerance throughout the entire rolling process. This advanced 4 hi cold rolling mill technology continuously monitors and adjusts roll gap position based on real-time feedback from high-precision sensors, compensating for thermal expansion, roll wear, and material variations to maintain tight thickness tolerances of ±0.005mm or better.
Eurotherm 590 Digital Control System
The integration of the Eurotherm 590 digital drive system with PLC programming provides unparalleled process control capabilities. This sophisticated control architecture for our 4 hi cold rolling mill enables precise speed synchronization, tension control, and profile management through an intuitive operator interface with comprehensive data logging and analysis functions.
Hydraulic Roll Changing System
Designed for maximum operational efficiency, our Φ220/Φ600×800 4 hi cold rolling mill features a complete hydraulic roll handling system including roll balancing, roll changing, and roll positioning mechanisms. This system reduces roll change times by up to 70% compared to manual systems, significantly increasing production availability while enhancing operator safety.
Versatile Material Processing Capabilities
One of the most significant advantages of our Φ220/Φ600×800 4 hi cold rolling mill is its exceptional versatility in processing various metals and alloys. The equipment has been specifically engineered to handle:
- Mild Steel: From hot rolled pickled coils to fully processed cold rolled strip with excellent surface quality
- Alloy Steels: Including high-strength low-alloy (HSLA) grades requiring precise thickness control
- Copper and Copper Alloys: From pure copper to specialized brass and bronze formulations
- Aluminum and Alloys: Various temper conditions from O to H18 with excellent flatness control
- Stainless Steels: Austenitic, ferritic, and martensitic grades with precise thickness reduction
The flexibility of this 4 hi cold rolling mill configuration allows operators to optimize the rolling schedule based on specific material characteristics, achieving optimal reduction rates while maintaining excellent strip quality and surface finish.
Industrial Applications and Production Value
The Φ220/Φ600×800 4 hi cold rolling mill serves critical roles across numerous industries where precision metal strip is essential:
- Automotive Industry: Production of high-precision components, electrical contacts, and structural elements
- Electronics Manufacturing: Precision strip for connectors, contacts, and semiconductor lead frames
- Appliance Manufacturing: Decorative and functional components requiring consistent thickness and surface quality
- Construction Sector: Specialized metal components for architectural applications
- Renewable Energy: Precision materials for solar panel frames and wind turbine components
By investing in this advanced 4 hi cold rolling mill technology, manufacturers gain significant competitive advantages through reduced scrap rates, lower energy consumption per ton of processed material, and the ability to command premium pricing for superior quality products.
When properly integrated into a complete production line, the Φ220/Φ600×800 4 hi cold rolling mill from HANI can achieve production efficiencies exceeding industry standards by 15-20% while maintaining exceptional quality control parameters.
Frequently Asked Questions About Our 4 hi Cold Rolling Mill
Q: What advantages does a 4 hi cold rolling mill offer over a 2-high mill configuration?
A: The 4 hi cold rolling mill design provides several critical advantages: smaller work rolls reduce contact area with the strip, enabling greater reduction per pass; backup rolls provide rigid support to prevent work roll deflection; improved strip shape control through specialized roll crown and bending systems; ability to process harder materials and thinner gauges; and extended roll life due to reduced bending stresses on work rolls.
Q: How does the hydraulic AGC system maintain thickness consistency?
A: Our hydraulic AGC (Automatic Gauge Control) system on the 4 hi cold rolling mill employs high-response servo valves and precision position sensors that continuously monitor strip thickness. The system makes thousands of adjustments per minute to the roll gap position, compensating for variations in incoming material thickness, temperature fluctuations, roll wear, and mechanical deflections. This closed-loop control system ensures thickness tolerances within ±0.5% of target gauge.
Q: What maintenance schedule is recommended for optimal performance?
A: For continuous operation of your 4 hi cold rolling mill, we recommend daily inspection of hydraulic systems and lubrication points; weekly calibration of sensors and control systems; monthly comprehensive inspection of roll bearings, drive couplings, and structural components; and quarterly full system diagnostics including hydraulic fluid analysis and electrical system verification. Proper maintenance extends equipment life by 30-40% compared to standard schedules.
Q: Can the Φ220/Φ600×800 4 hi cold rolling mill be integrated with existing production lines?
A: Absolutely. Our engineering team at HANI specializes in seamless integration of the 4 hi cold rolling mill into existing production environments. The control system architecture supports multiple communication protocols (Profinet, Modbus, Ethernet/IP) to ensure compatibility with upstream and downstream equipment. Custom interface development is available to match your specific production requirements and data management systems.
Q: What is the expected ROI for this 4 hi cold rolling mill investment?
A: Based on industry data from installations over the past five years, customers typically achieve full ROI on their 4 hi cold rolling mill investment within 18-24 months through reduced scrap rates (typically 5-8% improvement), higher throughput capacity (15-25% increase), energy efficiency gains (10-15% reduction in kWh/ton), and premium pricing opportunities for higher quality products. The extended service life of 20+ years provides exceptional long-term value.
Superior Engineering for Maximum Production Value
The Φ220/Φ600×800 4 hi cold rolling mill represents the culmination of decades of metallurgical engineering expertise and manufacturing innovation. Every component has been meticulously designed, tested, and refined to deliver exceptional performance across the most demanding production environments.
When you invest in this advanced 4 hi cold rolling mill technology, you’re not simply purchasing equipment—you’re gaining a strategic production advantage that translates to higher quality products, reduced operational costs, and enhanced market competitiveness. The precision engineering, robust construction, and intelligent control systems ensure consistent performance day after day, year after year.
Our commitment to excellence extends beyond equipment delivery to comprehensive technical support, operator training, and ongoing optimization services to ensure your 4 hi cold rolling mill continues to deliver maximum value throughout its operational life. With proper maintenance and operation, this equipment will serve as the productive cornerstone of your metal processing operations for decades to come.
For manufacturers seeking to elevate their production capabilities while maintaining strict quality control standards, the Φ220/Φ600×800 4 hi cold rolling mill offers an unmatched combination of performance, reliability, and value in today’s competitive metal processing industry.
HANI is one of China’s leading professional cold rolling mill manufacturers, providing complete cold rolling systems to steel companies worldwide. HANI focuses on designing and manufacturing integrated cold rolling solutions that meet the industry’s highest standards of precision, efficiency, and durability. Our engineering expertise lies in providing turnkey cold rolling production lines to optimize the performance of modern steel manufacturing plants.
