Four advanced mill configurations for hot strip production

Objective. Greatly differing mill configurations are available today for th e production of hot strip. Discussed in the following, therefore, are four very dissimilar hot strip production lines built over the past five years. Summary. Among the featured mills are a 450 m long conventional wide hot st rip mill in Taiwan and a thin-slab casting-rolling mill with a length of ju st 190 m in Korea. A comparison of the four mills reveals their technical f eatures. The roughing trains, incorporating heavy edgers and special proces s control elements, permit large width reductions. The new mandrelless coil box is used for the first time both in conventional mills and in thin-slab casting-rolling lines. A profile and flatness control concept, featuring re liable measuring systems and precise models, guarantees optimum product pro perties.