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针对一体化生产过程中连铸出坯顺序与热轧轧制顺序的协调问题,提出了计划顺序协调因子,并在此基础上建立了有利于提高直接热装(DHCR)比例的热轧批量计划优化模型.模型在满足热轧轧制工艺的基础上充分考虑了铸坯连铸出坯计划与热轧轧制计划的协调.采用改进遗传算法——两交换启发交叉算法对模型进行了求解.最后,针对大批量少品种和小批量多品种两组板坯对某钢厂2250 mm和1580 mm轧线进行了仿真,仿真结果表明模型可以大大减少铸坯因顺序不协调而引起的在进入加热炉前的等待时间,进而提高板坯DHCR比例.
In the light of the coordination between the order of continuous casting and the order of hot rolling in the process of integrated production, the scheduling order coordination factor is put forward. On the basis of this, the hot rolling batch plan which is helpful to increase DHCR ratio is established Optimization model.The model is based on the hot rolling process to fully consider the slab casting and blanking plans and hot rolling plan coordination.Adopted improved genetic algorithm - two exchange heuristic crossover algorithm to solve the model. Finally, the simulation results of 2250 mm and 1580 mm rolling lines for two large slabs of small and small batches and multi-varieties show that the model can greatly reduce the slagging caused by the uncoordinated order of slabs Waiting time in front of the furnace increases the DHCR ratio of the slab.