Methods of hot-rolled batch planning for seamless steel tube with machine maintenance
WU Zi-xuan
LI Tie-ke
ZHANG Wen-xin
WANG Bai-lin
Abstract：In this paper, a hot-rolled batch planning problem for seamless steel tube was extracted and defined from actual production under the condition of periodic machine maintenance.Due to the particularity of the seamless steel tube production, the problem was abstracted into a single machine scheduling problem with machine maintenance and setup times,and its mathematical model was established to minimize the total idle time and total setup time.Based on the feature that the setup time between batches depends on the specifications of steel tubes,a minimum rolling mill setup time rule was proposed,and it was proved to be optimal when the maintenance plan is not considered.In addition,a solving strategy and a cyclic solving architecture were furthermore established based on it,and a two-stage heuristic algorithm was designed. Finally,based on actual production data,experiments of different scale were carried out to evaluate the performance of the algorithm.The experimental results show that the algorithm can get a near optimal solution in a short time.Moreover,these results had been accordingly analyzed from practical point of views as well.
Keywords：seamless steel tubehot-rolled batch planningmachine maintenancesetup timesheuristic algorithm
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 1250-1259 )