Study On Optimization For Steel-making Logistics Based On EXTEND Simulation

Faced with the situation of current Chinese steel productivity excess, it will be a a key on how to raise the competition ability for domestic steel enterprises.Steelmaking is a corl process for modern steel production,which is a multi-step flow process that has many characteristics including multi-process,mixing by intermittent and continuous,furthermore,it is a complex mixed dynamic system which has multi-stage on production,convey, storage and intersecting parallels traffic between ground and air.It is helpful to optimize the manufacture process by studing on production logistics in steelmaking,so as to improve the equipment utilization and reduce the cost ,and finally, increasing enterprise's competitive power effectively.This paper study on the logistics in steelmaking process based on system simulation.EXTEND is a simulation platform software with high flexibility and expansibility which could simulate the discrete and continous system.It has lots of advantages including interaction, used repeatedly, scope, visibility, connectivity, scalability and technical support by the company,consequently,it is used widely at home and abroad.The user could build accurate and trusted model efficiently by the tools in the software.At present,there is a application in iron and steel domain that is the railway planning in Baosteel company.This paper used EXTEND software in building the model of steelmaking logistics on condition analyzing its characteristic.Then made the the Steelmaking Plant of Panzhihua Iron and Steel Corporation for example that study on the logistics optimize in steelmaking process based on the block of Evolutionary Optimizer in EXTEND software .It has been shown that: EXTEND could make the process of modeling to complex logistics system efficiently because of its modularization and hierarchical.The system of steelmaking logistics has excellent ability to EXTEND and secondary development.The results of simulating experiment shows:all of the data flow of the system which is modeled by EXTEND is in the normal.The production plan optimized by the evolutionary reduce the average time by 4.76% compared to the practical production.The simulation system could used to analysis the complex logistics and make the production plan by assistant decision-making in steelmaking process.