Integrated production planning of steelmaking-continuous casting-hot rolling considering coordination between casting and rolling

ZHENG Zhong; WANG Yong-zhou; LU Yi; GAO Xiao-qiang

doi:10.13228/j.boyuan.issn0449-749x.20200124

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Iron and Steel ›› 2020, Vol. 55 ›› Issue (12) : 107-113. DOI: 10.13228/j.boyuan.issn0449-749x.20200124

Integrated production planning of steelmaking-continuous casting-hot rolling considering coordination between casting and rolling

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Abstract

Integrated production planning of steelmaking-continuous casting-hot rolling is a complex combinatorial optimization problem with multi-objectives and multi-constraints. From the perspective of facilitating a multi-process production organization,an integrated production planning strategy that is planned separately by sub-process and coordinated by casting and rolling is proposed. From the strategy,charge plan,casting plan,and hot rolling plan are respectively made according to the production targets and constraints of steel-making,continuous casting and hot rolling with the slab as the basic unit. Then,the casting and rolling coordination optimization is carried out to obtain an integrated production plan from the casting and rolling connection relationship. In the coordination of casting and rolling,the goal of reducing the time difference between casting and rolling,which would increase the hot charging ratio,is used to optimize and coordinate the interface between continuous casting and hot rolling. According to the production order data,production plan objectives,and constraints of a steel plant,the effectiveness of the integrated production planning method is verified by comparing model simulation calculation and production performancedata.

Key words

steelmaking-continuous casting-hot rolling / production planning / integrated method / coordination model / time difference between casting and rolling

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ZHENG Zhong, WANG Yong-zhou, LU Yi, et al. Integrated production planning of steelmaking-continuous casting-hot rolling considering coordination between casting and rolling[J]. Iron and Steel, 2020, 55(12): 107-113 https://doi.org/10.13228/j.boyuan.issn0449-749x.20200124

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