Hybrid direct hot charge rolling production for specific reheating furnace mode

The hybrid direct hot charge rolling (DHCR) production of continuous casting to hot rolling and the production mode of reheating furnaces were analyzed. A schedule model of reheating furnaces based on hybrid DHCR production was established. On the basis of meeting the requirements of the reheating furnace process, the model considers the waiting time before slabs entering the reheating furnaces and the idle time of the hot rolling mill. The Tabu search algorithm was used in the model. Finally, two slab groups, which are few varieties with large quantities and many varieties with small quantities, were simulated in a 1 580 mm hot rolling line for specific and non-specific reheating furnace modes. Simulation results show that the specific reheating furnace mode can significantly improve the thermal efficiency of reheating furnaces.