At ArcelorMittal Bremen GmbH, located in Germany, a significant technological advancement was achieved with the integration of the pickling line and tandem cold mill, facilitated by Primetals Technologies. This strategic coupling was designed to optimize the production process, reduce costs, and enhance the surface quality of cold-rolled steel. The project involved comprehensive engineering and equipment supply, culminating in 2012, with further enhancements slated for completion by 2014. This initiative was pivotal for the Bremen plant, which supports key industries such as automotive, construction, and domestic appliances through its cold-rolling mill's capabilities.
Challenge
ArcelorMittal Bremen faced the challenge of improving production efficiency and product quality in their cold-rolling operations. The plant, equipped with a 4-stand, 4-high tandem mill, needed to address inefficiencies linked to the separate operations of the pickling line and the tandem cold mill. This separation resulted in extended throughput times due to the necessity of threading strips through rolling stands and handling coils between processes. Additionally, the aim was to minimize surface defects and create uniform product properties, crucial for meeting the high standards of industries like automotive manufacturing. Addressing these issues required a seamless integration of processes to maintain competitiveness and fulfill escalating market demands.
Solution
Primetals Technologies delivered a comprehensive solution by supplying essential mechanical equipment and implementing the coupling of the pickling line to the tandem cold mill. Key components included a welding table with strip centering and strip clamps, helical turning devices, a 6-strand looper, and bridle and steering rolls. This equipment facilitated the smooth transition from pickled coil production to a continuous coupled mode. By integrating these sections into a single, streamlined process, the plant significantly increased its output. This coupling allowed for continuous strip flow, reducing the need for coil handling and intermediate storage, thus enhancing the overall efficiency. Moreover, the backup roll chock revamp and the supply of Morgoil bearing components contributed to the improved performance and longevity of the mill operations.
ArcelorMittal Bremen, Germany, PLTCM, coupling section, looper
ArcelorMittal Bremen, Germany, PLTCM, coupling section, looper
Benefits
- Higher production rates through continuous processing
- Improved yield from reduced strip head and tail end threading
- Enhanced strip quality with uniform properties and minimal surface defects
- Reduced operational costs, including lower roll consumption and personnel expenses
- Decreased electrical energy usage and maintenance requirement
Conclusion
- The coupling of the pickling line and tandem cold mill at ArcelorMittal Bremen significantly boosted production capacity and product quality.
- Strategic integration led to cost reductions and operational efficiency improvements.
- The project exemplified effective collaboration between Primetals Technologies and ArcelorMittal Bremen, setting a benchmark for future advancements in steel manufacturing.
- The revamped system supports diverse industries by delivering high-quality steel products with optimized delivery times.
- The installation's success underscores the importance of technological innovation in maintaining competitive advantage within the steel industry.
