Chinese steel producer orders powerful continuous caster from Primetals

Wuyang Iron and Steel has placed an order with Primetals Technologies for a 1-strand continous caster with several record-breaking features. The caster will be implemented at Wuyang’s plant in Wugang, Henan province, and is set to become the world’s most powerful of its kind. Moreover, it will produce the world’s thickest slabs, measuring up to 460 millimeters in thickness.

Thanks to the new equipment, Wuyang will be able to manufacture plates for heavy-gauge applications like the shipbuilding and wind turbine sectors. Annual capacity will be at one million tons of high-quality slabs. Products of such thicknesses are usually produced with ingot casters or vertical casters, both of which are not as cost-effective and efficient as Primetals Technologies’ new type of bow-type continuous slab caster.

Single Roll DynaGap (SRD) segments from Primetals Technologies allow for the dynamic alignment of individual roll gaps when changing parameters that influence the production, like steel grade, cooling grade, and casting speed. The SRD segments enable forces of 5,000 kilonewton per roll, corresponding to the weight of 15 fully loaded trucks. These extraordinary strong forces ensure sophisticated internal microstructures of the slabs, while keeping the mechanical properties at a consistent and high quality.

The caster will also feature Primetals Technologies’ new and ground-breaking method for establishing ideal caster-roll geometry as early as at the design stage. This solution reduces unsteady bulging by 50 percent, enables higher casting speeds, and leads to greater productivity.

The tried-and-tested oscillator will be carefully designed with the philosophy of compensating for heavy weights by utilizing cascaded leaf springs, which helps to run the oscillator at dramatically reduced energy consumption levels.
Primetals Technologies’ continuous bending and straightening concept, Smart Segment, in combination with a dry-casting machine design that includes the Eco Star rolls results in significantly improved slab-surface quality. The Eco Star rolls’ internal cooling system is optimized to withstand the high temperatures needed to minimize surface defects during the dry-casting process.

Source and Photo: Primetals