Thermal crown analysis of the roll in the strip casting process

Numerical Simulation of Thermal Field of Work Roll during Top Side-pouring Twin-roll Casting of Steel

“…And the casting speed was found having a great effect on the roll surface temperature by analysis of the heat flux, which would also be analyzed in this paper. Park et al 5) studied the thermal crown of the roll in the strip casting process based on the thermal distribution analysis of the roll sleeve. Li et al 6) analyzed the thermal field of work roll during the hot strip rolling, where the study was focused on the temperature of roll surface and could not reflect the temperature variation with respect to depth in the roll.…”

Progress in Strip Casting Technologies for Steel; Technical Developments

“…48) This can lead to uneven strip profiles which can cause enormous problems during subsequent rolling steps. Finite element analysis, incorporating shrink-fit effect and plastic deformation, has shown that the thermal crown for a typical TRC roll is 'M' shaped.…”

“…48) One feature that exists in all strip casting operations is the presence of a triple point -the point where a three-phase interface forms as the liquid melt comes into contact with the solid cooling substrate in a gaseous shrouding environment. This gas can be adjacent, or not, to the refractory wall.…”

“…48) Only a few rolling steps, a finishing step and conventional coiling, are required. Figure 23 provides a comparison of the typical equipment and processing stages involved in various continuous casting processes.…”

A finite element analysis for asymmetric contraction after coiling of hot-rolled steel

“…The hot coil is cooled from 500-700 • C to room temperature over a 4-5-day period under natural air cooling conditions as presented by Park et al (1998) and Saboonchi and Hassanpour (2007). In most hot strip rolling processes, the phase transformation of steel was finished on the run-out table (ROT) before coiling , and the hot coil is normally cooled down but maintaining the cylindrical shape (Park et al, 2009). However, asymmetric contraction occurs in an actual mill during cooling after the coiling of hot-rolled steel, which has significantly large hardenability due to high content of carbon or other alloying elements and shows incomplete phase transformation prior to coiling, as shown in Fig.…”