Production scheduling problems of steelmaking-continuous casting process in dynamic production environment  

作　　者：Zhong Zheng Jian-yu Long Xiao-qiang Gao 

机构地区：[1]College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China [2]College of Economics and Business Administration, Chongqing University, Chongqing 400044, China

出　　处：《Journal of Iron and Steel Research International》2017年第6期586-594,共9页

基　　金：financially supported by the National Natural Science Foundation of China(Nos.51474044 and 50574110);Key Projects of Chongqing Science and Technology Research Projects ( No. CSTC2011AB3053)

摘　　要：A concept of production scenario for the steelmaking continuous casting production process and the mathe- matical description of such concept were proposed. The production scenario was described with the varia- tion of the equipment status and the production material properties based on the executing production schedule. Then, the dynamic characteristics of the production process could be described with the evolu tion process of production scenario. Through analyzing the influence of the dynamic production scenario on production scheduling, three key points about the scheduling problems were identified： the problem for integrating the schedules of different batches that is non-neglected when making a schedule, the problem for matching the material flow with the schedule that should be solved when implementing a schedule, and the problem for eliminating the deviations between the initial schedule and implemented schedule that should be solved when rescheduling in a disturbed environment. Finally, a set of experiments were con- ducted, and the results demonstrated that making the production schedule and solving the rescheduling problem for steelmaking continuous casting process with addressing the above three problems improve the adaptability of the schedule in dynamic environment.A concept of production scenario for the steelmaking continuous casting production process and the mathe- matical description of such concept were proposed. The production scenario was described with the varia- tion of the equipment status and the production material properties based on the executing production schedule. Then, the dynamic characteristics of the production process could be described with the evolu tion process of production scenario. Through analyzing the influence of the dynamic production scenario on production scheduling, three key points about the scheduling problems were identified： the problem for integrating the schedules of different batches that is non-neglected when making a schedule, the problem for matching the material flow with the schedule that should be solved when implementing a schedule, and the problem for eliminating the deviations between the initial schedule and implemented schedule that should be solved when rescheduling in a disturbed environment. Finally, a set of experiments were con- ducted, and the results demonstrated that making the production schedule and solving the rescheduling problem for steelmaking continuous casting process with addressing the above three problems improve the adaptability of the schedule in dynamic environment.

关 键 词：SchedulingReschedulingSteelmakingContinuous castingDisturbanceProduction scenario 

分 类 号：TF758[冶金工程—钢铁冶金]