Journal of Shanghai Jiao Tong University ›› 2024, Vol. 58 ›› Issue (8): 1221-1230.doi: 10.16183/j.cnki.jsjtu.2023.173

• Mechanical Engineering • Previous Articles     Next Articles

Opportunistic Maintenance Modeling of Large-Scale Hot Rolling Production Line Based on Maintenance Priority and Dual Variable Time Window

MAO Wenxin, ZHOU Xiaojun()   

  1. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2023-05-04 Revised:2023-09-11 Accepted:2023-09-20 Online:2024-08-28 Published:2024-08-27

Abstract:

To solve the problem of differential maintenance demand caused by daily dynamic maintenance and periodic replacement of support rolls in large-scale hot rolling lines, a maintenance priority rule is introduced to identify maintenance judgment order of components under long distance condition and downtime constraint. A dual variable time window rule is constructed to identify whether components should be maintained and distinguish maintenance demand, and then a dynamic opportunity maintenance model is established for the system. The case study shows that the model can effectively solve the problem of differential maintenance scheduling for large-scale hot rolling lines under the constraints of maintenance resources and downtime, and has more cost advantages than the traditional time-window-based model.

Key words: large-scale hot rolling line, opportunistic maintenance, preventive maintenance, maintenance priority, variable time window

CLC Number: