Rolling scheduling of reheating furnaces in steel production when some furnaces may not be available at times

doi:10.16511/j.cnki.qhdxxb.2020.26.036

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Abstract A model is presented here for scheduling of reheating furnaces that are used after continuous casting and before hot-rolling when some of the furnaces may not be available at certain times which leads to constraints on the scheduling. The constraints that occur in actual production lines are modeled in a mixed-integer programming model to minimize the combined costs of the adjusted schedule, select the transport path for each job and determine the furnace allocations. A heuristic algorithm for rolling scheduling is used to update the model and decompose the problem with partial reuse of existing results to improve the dynamic scheduling efficiency. Simulations show that the algorithm can provide real-time and effective scheduling.

Keywords reheating furnace temperature holding pit machine non-availability rolling scheduling mixed-integer programming

Issue Date: 26 August 2021

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	QIAN Peng
	WU Cheng
	SONG Shiji
	DING Jianya

Cite this article:

QIAN Peng,WU Cheng,SONG Shiji, et al. Rolling scheduling of reheating furnaces in steel production when some furnaces may not be available at times[J]. Journal of Tsinghua University(Science and Technology), 2021, 61(10): 1166-1176.

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http://jst.tsinghuajournals.com/EN/10.16511/j.cnki.qhdxxb.2020.26.036 OR http://jst.tsinghuajournals.com/EN/Y2021/V61/I10/1166

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