考虑下机约束的精轧机组工作辊机会维护建模  

Opportunistic Maintenance Modeling of Finishing Rolls Considering Dismounting Constraints

作　　者：贲旭瑞 周晓军[1] BEN Xurui;ZHOU Xiaojun(School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学机械与动力工程学院,上海200240

出　　处：《上海交通大学学报》2023年第8期996-1004,共9页Journal of Shanghai Jiaotong University

基　　金：国家重点研发计划(2020YFB1711103);国家自然科学基金(52075336)资助项目。

摘　　要：以钢铁精轧机组工作辊为对象,综合考虑轧辊磨损、机组两类故障、辊缝质量控制对故障损失、轧件质量损失与维护成本的影响,构建单辊维护模型以实现单辊维护周期的动态决策.在此基础上,考虑各轧辊磨削周期不同、下机周期相同、下机计划允许小幅调整等特殊场景,提出工作辊动态机会维护策略并构建决策模型,优化精轧辊组工作辊机会维护方案.实例分析表明,与传统的时间窗策略相比,动态机会维护策略在降低工作辊维护成本方面更具优势.A single roll maintenance model is established to realize the dynamic decision of single roll maintenance cycle by considering the influence of roll wear,unit faults,and roll gap quality control on accident loss,piece quality loss,and maintenance cost.Considering special scenarios such as different grinding cycles of each roll,the same unloading cycle and allowing small adjustment of dismounting schedule,a dynamic opportunity maintenance strategy of work roll is proposed and a decision model is constructed to optimize the work roll opportunity maintenance scheme of the finishing rolls.The case study shows that compared with the traditional time window strategy,the dynamic opportunity maintenance strategy has more advantages in reducing the maintenance cost of work roll.

关 键 词：精轧工作辊 轧辊磨损 磨削周期 机会维护 动态维护策略 

分 类 号：TH17[机械工程—机械制造及自动化]