As part of the upgrade, the 5-strand billet caster will be enhanced with a 200-ton withdrawal and straightening unit (WSU). Compared to the previous 130-ton system, the new setup will provide a significant capacity increase by generating a reduction force of 200 tons per reduction cylinder. This improvement will enable stronger internal crack control and higher product quality.
The project will also increase the number of reduction cylinders from nine to eleven in order to provide better strand control. By reducing the distance between the cylinders, the reduction forces will be distributed more evenly along the strand, thereby improving soft reduction accuracy and internal billet quality. The expanded soft reduction range will also provide greater flexibility in the production process.
A new secondary cooling concept developed by Primetals Technologies will also be integrated into the system, enabling production across a wider speed range. This new approach will support billet quality by allowing better control of higher strand temperatures.
As part of the modernization, the casting machine will be equipped with advanced secondary cooling and soft reduction technologies such as DynaPhase, Dynacs 3D, and DynaGap Soft Reduction 3D. In addition, a new electromagnetic stirring system will be commissioned. With the combined use of these technologies, high internal quality with a segregation index of 1.05 is targeted.
Following the upgrade, the line is expected to significantly improve its performance in the production of high value-added products such as bearing steel, high-strength spring steel, high-carbon wire rod, bridge wire rope, tire cord, and cold-heading fastener segments.
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