In the metallurgical industry’s pursuit of “high output, premium quality, and low consumption”, a rolling mill with high stiffness, precision, and stability has become the key to steel enterprises enhancing their core competitiveness. With years of profound insights into industry needs and technical accumulation in R&D and manufacturing, our high-stiffness short-stress rolling mill series has been widely adopted by major steel mills worldwide. Covering diverse rolling scenarios such as bars, wires, and narrow strip steel, these products have gained market recognition for their outstanding performance.
I. Core Product Advantages: Redefining Rolling Mill Performance Standards
1. High-Stiffness Design for Superior Product Precision
- Short-Stress Line Structure: Compared with traditional housing-type rolling mills, the stress loop is significantly shortened. Based on Hooke’s Law, elastic deformation is greatly reduced, delivering higher mill stiffness. This effectively controls equipment bounce during rolling (on-site measured bounce ≤ 0.2mm), ensuring strict control over the dimensional tolerance of finished products to meet high-precision rolling requirements.
- Optimized Force Transmission: Four high-strength tie rods replace traditional housings to bear rolling loads, featuring a short transmission path and dispersed load distribution. The rolling force distribution angle in rolling bearings exceeds 150°, reducing the peak unit load by over 50%. This extends the service life of bearings and bearing housings while lowering equipment failure rates to ensure stable continuous production.
- Dual-Side Axial Positioning: Models of Φ350 and above are equipped with dual-side axial positioning structures as standard, further enhancing operational stability. This avoids product quality fluctuations caused by positioning deviations during rolling, making them particularly suitable for high-speed, heavy-load rolling scenarios.
2. Flexible Adjustment & Stable Operation: Balancing Efficiency and Reliability
- Precise Roll Gap Adjustment: Supports dual-mode adjustment (hydraulic motor and manual symmetric adjustment) with a 7-level precision for the screw-down worm gear pair. It enables symmetric fine-tuning of the roll gap to prevent wedge-shaped reduction. Some models are equipped with axial spherical limit devices (roll axial runout ≤ 0.07mm), further ensuring product dimensional accuracy and reducing defect rates.
- Stable Balancing System: Adopts elastic damping shock absorbers, laminated spring elastic damping balance, or a combination with hydraulic auxiliary balance (standard for Φ550, Φ650, and other models), providing more stable balance performance that dynamically adapts to rolling loads. The built-in spring balance damper minimizes downtime caused by damper damage, increasing equipment operational efficiency with an annual effective operating time of over 8,000 hours.
- Multi-Scenario Lubrication Adaptation: Offers flexible lubrication options (grease, air-oil, or combined) based on customer production needs. It adapts to different rolling temperatures, speeds, and environmental conditions—meeting the lubrication requirements of high-temperature, high-speed rolling while withstanding harsh working conditions such as humidity and dust, ensuring long-term stable equipment operation.
- Low-Vibration Design: With a low center of gravity and small overturning moment, combined with an elastic damping shock absorption system, vibration amplitude during operation is significantly reduced. This not only minimizes equipment wear but also reduces impact on workshop structures and resonance effects on surrounding equipment.
3. Lightweight Structure & Easy Maintenance: Reducing Total Cost of Ownership
- Compact, Lightweight Design: The mill features a compact structure, weighing only 1/3 of traditional housing-type rolling mills. This reduces workshop infrastructure load requirements and transportation costs. The efficient roll and stand replacement process—using an offline integral core replacement mode—greatly shortens downtime, improving roll change efficiency by over 60% compared to traditional mills and helping customers boost capacity utilization.
- Low-Maintenance Characteristics: Mechanical tie rods and bearing housings adopt multi-layer coated sealing devices, providing excellent waterproof, dustproof, and corrosion-resistant performance. This adapts to the dusty, high-humidity harsh environment of metallurgical workshops, reducing the frequency and cost of daily maintenance. Key components are made of rigorously selected and heat-treated materials, manufactured with high-precision processing equipment to ensure long-term durability, with a mean time between failures (MTBF) exceeding 1,200 hours.
- Modular Design: Core components are assembled modularly, with high interchangeability of wearing parts for easy replacement without specialized tools—lowering skill requirements for maintenance personnel. A complete list of wearing parts and reserve recommendations is provided to avoid prolonged downtime due to spare part shortages.
II. Diverse Product Series: Covering Full-Scenario Rolling Needs
Tailored to different rolling specifications and capacity requirements, we offer a comprehensive range of short-stress rolling mill series, including universal rolling mills and four-high finishing mills for strip steel. Core parameters cover small-to-large scale rolling scenarios. Below are key performance indicators of representative series:
Note: The above parameters are for reference only. Custom adjustments are available based on customers’ actual production requirements—including core parameters such as roll diameter, roll body length, and rolling force. The mills can also adapt to rolling needs of different raw material types (mild steel, alloy steel, stainless steel, etc.) to ensure seamless integration with production lines.
III. Services & Commitments: Customer-Centric Value Co-Creation
1. Customized Solutions
Beyond standard models, we provide end-to-end customized services—from equipment design and manufacturing to installation and commissioning—based on customers’ production line layout, raw material specifications, finished product requirements, workshop space constraints, and compatibility with existing equipment. Our professional technical team conducts on-site surveys and demand analysis to deliver targeted technical solutions, ensuring seamless integration with existing production systems and dual improvements in capacity and product quality.
2. Full-Lifecycle Services
- Documentation Delivery: Provides complete technical documents (electronic + hard copy), including general assembly drawings, wearing part diagrams, operation manuals, maintenance guides, assembly adjustment data, and certificates of conformity—facilitating post-operation maintenance and personnel training.
- Commissioning & Acceptance: Each mill undergoes factory assembly and no-load test runs to ensure smooth operation and precise component coordination. On-site, a professional technical team provides full support for no-load and load commissioning, offering operation and maintenance training to ensure customers’ personnel master equipment usage skills until the mill meets expected performance standards. A 1-year warranty is provided after acceptance. For quality issues during the warranty period, we offer rapid response and arrange cross-border technical support with free replacement parts for repairs.
- Long-Term Technical Support: After commissioning, a dedicated customer service file is established with regular follow-ups to monitor equipment operation and provide maintenance advice. 7×24-hour remote technical consultation is available for production-related technical challenges, with on-site support provided when necessary—helping customers optimize production processes, improve rolling efficiency, and extend equipment service life.
- Spare Part Supply Guarantee: Spare part warehouses are located in multiple global regions, with sufficient stock of common wearing parts. Fast response to spare part requests and efficient delivery via international logistics minimize waiting time and downtime losses.
3. Proven Industry Track Record
Our products have served numerous key domestic and international projects, including high-speed bar/wire composite lines, section steel production lines, and narrow strip steel production lines. Customers span large steel groups, metallurgical equipment integrators, and small-to-medium rolling enterprises in multiple countries and regions worldwide. Proven to operate stably under diverse climatic conditions, raw material types, and capacity scales, our mills have earned a strong reputation for reliability, precision, and cost-effectiveness—empowering customers to achieve capacity growth and product quality upgrades.
IV. Contact Us: Unlock Efficient Rolling Excellence
If you are seeking cost-effective, reliable rolling mill equipment or customized metallurgical solutions, please contact us via:
- WhatsApp: +86 13613814286
- Email: hengyuan6@hotmail.com
We look forward to partnering with you to drive the green, efficient, and high-quality development of the metallurgical industry through advanced short-stress rolling mill technology!
