热轧工作辊服役状态在线监测与主动再制造时机在线决策方法研究  

Research on On-line Monitoring of Service Status of Hot Rolled Work Rolls and On-line Decision-making Method for Active Remanufacturing

作　　者：宋守许[1,2] 张宇浩 蔚辰 李想[1,2] 徐瑞[1,2] SONG Shouxu;ZHANG Yuhao;WEI Chen;LI Xiang;XU Rui(School of Mechanical Engineering,Hefei University of Technology,Hefei 230009;Key Laboratory for Green Design and Manufacturing of Machinery Industry,Hefei University of Technology,Hefei 230009)

机构地区：[1]合肥工业大学机械工程学院,合肥230009 [2]合肥工业大学机械工业绿色设计与制造重点实验室,合肥230009

出　　处：《机械工程学报》2024年第24期56-65,共10页Journal of Mechanical Engineering

基　　金：国家自然科学基金资助项目(51975176)。

摘　　要：轧辊再制造工作具有良好的经济、环境和社会效益,但退役轧辊性能与退役时间不确定性问题影响着轧辊再制造工作的效率与成本。通过热轧制实验模拟实际工业轧制状况中高速钢工作辊性能指标退化,根据不同性能指标对轧辊以及轧制过程的危害程度,构建了包含硬度、磨损量、耐磨性、表面摩擦因数的轧辊状态评估指标集,并提出了贝塔分布-推土机距离方法用于融合轧辊状态评估指标集,构建出具有综合性的轧辊健康状态指标(Healthy indicator,HI)。基于指标HI将轧辊退化过程划分为磨合、稳定退化和迅速劣化三个阶段,基于Ville拐点监测方法确定了热轧工作辊主动再制造时机点。最后,采集不同状态下轧辊表面的涡流信号,提取涡流信号希尔伯特谱的能量和为工作辊退化特征,通过构建退化特征与HI映射模型,实现了高速钢工作辊综合性能退化的在线监测与定量表征,以及主动再制造时机的在线抉择。Performance and uncertain timeline to retirement affect efficiency and cost of work roll remanufacturing,which is beneficial for economy,environment and society.Investigates performance degradation of high-speed steel work rolls in the simulated rolling process.It presents an indicator set including hardness,wear amount,abrasion resistance,and surface roughness,illustrating harm to the work rolls and rolling.Based on the set and Beta-earth mover’s distance(Beta-EMD),it proposes a comprehensive health indicator(HI)of work roll,illustrating running-in,stable degradation and rapid deterioration.According to detection of Ville turning point,it becomes clear to remanufacture the hot work rolls.According to the Hilbert spectrum of the eddy current signals on the surface of the work rolls and the mapping models of degradation and HI,it is possible to conduct online monitoring of performance degradation of the high-speed steel work rolls,perform quantitative characterization and determine remanufacturing.

关 键 词：工作辊 Beta-EMD方法 健康指标 在线监测 再制造时机 

分 类 号：TG156[金属学及工艺—热处理]