Back-up and Structural rolls are cast using static casting technology. Mold designs have been developed to ensure the optimum in consistent solidification characteristics and roll barrel surface quality.
Each mold design incorporates massive barrel and bottom neck chills, resin bonded sand top necks and insulated feeder heads together with an integral bottom pour runner and ingate system. These designs ensure rapid solidification rates in the roll barrel while maintaining the best possible liquid metal feed during roll solidification. The pouring system incorporates a tangential ingate to provide smooth clean metal flow with minimum turbulence during mold fill.
Ladle treatment technology is incorporated in the static casting process to ensure the highest possible nucleation potential for grain refinement together with uniformity and consistency of casting temperature. The combination of UES UK static casting and metal treatment technologies ensure that all rolls produced have a consistent fine grain barrel structure, sound centerline quality and high integrity roll journals.