Comparative study on special and non-special reheating furnace mode based on simulation technology

This paper analyzed hybrid DHCR production of continuous casting-hot rolling (CC-HR) and the production model of reheating furnaces. The scheduling model of reheating furnaces based on hybrid DHCR production was established. On the basis of meeting the requirements of the reheating furnaces process, the model considered the waiting time before slabs entering the reheating furnaces and the idle time of the hot rolling mill. Then, the model was solved by tabu Search. Finally, two slab groups which were few varieties and large quantities and many varieties and small quantities were simulated in the 2250mm hot rolling line for special reheating furnaces mode and non-special reheating furnaces mode. The simulation results showed that it can significantly improve thermal efficiency of reheating furnaces in the specific reheating furnaces mode.