Speaker
Description
Heavy beams producers selected Danieli technology to apply Thermo-Mechanical Control Process (TMCP) at their rolling mills.
Thanks to this process, the product portfolio can be expanded with high strength beams in fine-grained structural grades according to the European (EN 10025-4) and American (A913/A913M) standards.
High-strength beams offer substantial savings in construction in terms of material weight and fabrication costs (mainly welding) for a wide range of applications, such as high-rise buildings, long-span bridges, constructions in seismic areas, and offshore structures.
These beams are obtained through TMCP from low-alloy grades chemistry steels that provide excellent weldability (no pre-heating required) while achieving good toughness at low temperatures.
The thermo-mechanical control process is performed by Selective Flange Cooling (SFC) in combination with Quenching & Self-Tempering (QST), treating the entire beam.
The SFC equipment is installed at the entry and exit sides of the reversing finishing mill through cooling side guides, followed by the QST system at the exit side.
Danieli QST-treated beams have been industrially produced over the past ten years. Results demonstrate the QST system’s ability to exceed the most demanding global requirements.
Furthermore, recent tests carried out at the Danieli Research Center demonstrated that a tuned nozzle configuration grants better cooling efficiency and water savings of up to 30% compared to the previous version.