Steel Reversing Cold Rolling Mills

The steel reversing cold rolling mill is a versatile solution designed to meet the challenges of small to medium-sized production capacities and special steel grades. In the steel industry, achieving high-quality production with flexibility and efficiency is crucial. The reversing cold mill addresses these challenges by offering a compact design and advanced features that ensure stable operation and uncompromising strip quality.

In reversing cold mills, the tension reels are strategically placed at both ends of a single or two-mill-stand arrangement. This configuration allows for quick changes in rolling parameters for each coil, making it ideal for smaller-lot production of various product types, including high-grade silicon steel. The compact size and simple design facilitate easy access to equipment and machinery for maintenance purposes, while operation can be stopped and restarted flexibly. The advanced features reversing cold mills from Primetals Technologies, based on the UC-MILL principle, ensure stable operation and uncompromising strip quality to meet strict tolerance requirements.

Single-Stand Reversing Cold Mill

A single-stand cold rolling mill is capable of producing 100,000 to 400,000 tons annually, depending on the product mix. Rolling schedules can be carried out with an even or odd number of passes to maximize mill availability and performance. The UC-MILL, equipped with work roll bending, intermediate roll bending, intermediate roll shifting, and all-straight-roll application, ensures enhanced flatness control. Strip flatness measuring equipment mounted at one or both ends of the mill, combined with multi-zone work roll cooling, meets the highest demands for flatness.

Two-Stand Reversing Cold Mill

Two-stand reversing cold mills developed by Primetals Technologies combine the flexibility of single-stand reversing mills with the capacity of conventional coil-to-coil tandem mills at substantially reduced investment costs. Steel rolled in two-stand reversing cold mills is suitable for a wide range of applications, offering the best possible performance in terms of quality and productivity. A two-stand reversing cold mill can deliver capacities of between 300,000 tons annually of thin-gauge products or one million tons and more of thicker-gauge products.

HYPER UC-MILL

The HYPER UC-MILL is a newly developed mill featuring even smaller work rolls to achieve high performance of strip gauge and flatness control for high-strength steel (HSS) rolling. It is also applicable for the production of high-grade, non-grain-oriented silicon steel and thin products. The optimized combination of roll diameters brings out the best performance of the HYPER UC-MILL. In overall comparison, the HYPER UC-MILL’s work roll diameter is reduced by 20-30% from that of the standard UC-MILL to further reduce rolling force and the number of passes. The MH spindle is the fundamental technology to transmit the required torque for the HYPER UC-MILL.

Benefits of Reversing Cold Mills from Primetals Technologies

• High production capacity and yield
• Flexible, low-cost rolling for a wide range of products, especially for small order lots
• Tight strip thickness and shape tolerances
• Minimum off-gauge length
• High surface quality
• Second stand can serve as a skin pass mill
• Smaller work rolls and optimized roll diameter combination with intermediate and back-up rolls
• Work roll-driven system for high flatness controllability