9th ECCC European Continuous Casting Conference – ECCC 2017

HADEED commitment to improve steel quality is emphasized by the installation of Dynamic Soft Reduction (DSR) system at slab casters. The system purpose is to improve steel internal quality in terms of reduced internal cracks and centerline segregation, which will lead to higher quality of hot rolled coils. A comparative study conducted to evaluate the influence of dynamic soft reduction system on centerline macro-segregation of API grades. Sulfur-print as a qualitative method was not sufficient to provide clear distinguish of alloying elements concentrations. In addition, Electron Probe Micro Analyzer (EPMA) was utilized as a quantitative method to determine elemental concentration of slab samples. The analysis revealed a decrease in Manganese macro-segregation compared to slabs produced without DSR system. In addition, the study shows the benefits of DSR system in terms of uniform distribution of steel alloying elements by better quality of produced hot rolled API-X60 coils.