Primetals Technologies said the caster can produce ultrathick slabs up to 460 mm thick. The single roll DynaGap (SRD) segments enable Wuyang to adjust each roll gap as parameters change including steel grade, cooling rate and casting speed. The SRD segments deliver 5,000 kilonewtons of force per roll to create advanced internal microstructures in the slab while maintaining consistently high mechanical properties. 

The machine has a new method for setting up the ideal caster roll geometry by cutting unsteady bulging by 50% to allow for faster casting speeds and greater productivity. Primetals Technologies’ Smart Segment works with a dry-casting machine design using Eco-Star rolls. These rolls improve slab surface quality and reduces surface defects using an internal cooling system to handle high temperatures. 

Wuyang said the new caster will allow them to meet demand for steel products in industries such as offshore wind power, nuclear power steel, pressure vessels and engineering machinery. 

The companies said they intend to continue their collaboration to develop new steel grades on the ultrathick caster over the coming years.