关键词: 热轧计划, 不兼容钢种, 出炉温度, 主体材, 单亲遗传算法

Abstract: For the compiling problem of hot rolling planning,the hot rolling regulations of the subject sheet were given by considering the factors of incompatible steel grade,and a multi-objective mathematical model was established based on an addition objective of the minimum tapping temperature jump penalty value.A partheno-genetic algorithm was designed with model features,and the basic parameters of this algorithm and the penalty value of objective function were discussed in depth to enhance the applicability and computational efficiency of the algorithm.In addition,the disposal strategy for number and infeasible solution of hot rolling planning were put forward to improve the algorithm performance.Furthermore,the simulation experiment by considering the existence and absence of incompatible steel was adopted which utilized steel grade,specifications,optimized rolling orders and inventory dates as the initial data,and the results showed that the algorithm and model could solve the hot rolling planning problem with incompatible steel grades effectively,and the obtained hot rolling plan was accurate.

Key words: hot rolling planning, incompatible steel grades, tapping temperature, subject sheet, partheno-genetic algorithm