A new HD (high definition) spray technology was implemented and successfully commissioned in the two-strand slab caster of a global steel producer in the last quarter of 2017.
SMS group retrofitted the two strands of the vertical bending caster at ArcelorMittal Bremen one after the other and put them back into operation within one month of one another. The goal of the retrofit was to improve secondary cooling and slab quality.
At ArcelorMittal Bremen, 220-millimeter-thick steel slabs are cast with a maximum width of 2,670 millimeters.
“We are very satisfied with the HD spray technology,” said Kai Küstner, project manager for the caster retrofit at ArcelorMittal Bremen. “The SMS group team was very committed and supported our trusting cooperation. This enabled smooth commissioning.”
The HD spray system developed by SMS group is a scalable water distribution and control system. Compact HD spray boxes fitted close to the spray nozzles, and not in the water distribution room, take over the function of control valves, reducing the required interconnecting pipework. Pneumatically operated pressure control valves and the related automation system form the centerpiece of the HD spray system. The secondary cooling water is distributed and controlled only just before the cooling nozzles.
ArcelorMittal Bremen produces over 3.5 million tons of flat steel every year.
