Design And Development On Visual Simulation System Based On ActiveX Component Technology For Logistics In Steel-making Process

Steel-making process is a key process in steel manufacture process. Logistics in steel-making process is a hybrid complex dynamic system of discrete event and continue process with physical and chemical change of materials. It is essential for someone to make reasonable planning and scheduling in order to achieve production of smooth logistics, quality steel and efficient cost. System simulation is a means to simulate real world with the help of model. Simulating the logistics in steel-making process is beneficial to preparation of reasonable plan and scheduling scheme for the process.In this thesis, a visual simulation system for logistics in steel-making process is developed on the basis of cellular automaton model for the logistics in steel-making process by applying ActiveX technology. The software package of the system has also been validated based on investigation on simulating the logistics in The Vanadium-extracting and Steel-making Plant of Panzhihua Iron and Steel-making Plant of Panzhihua Iron and Steel Corporation.It is shown that the software can be used to build the simulation model and integrate dynamically simulation kernel by ActiveX technology and object-oriented methodology. The software has friendly interface and good function in visualizing model, result and evaluating logistics. A series of tests for simulating logistics in steel-making process have been conducted based on inputs of 100% continuous casting at Vanadium-extracting and Steel-making Plant of Panzhihua Iron and Steel Corporation(PISCO). It has been shown that when the casting cycles of three casters are in regular range, it is essential for continuous casting to ensure online quantity of hot metal, which is 10 ladles and varies from 9.29 ladles to 10.23 ladles. As the arrival of hot metal from blast furnace speeds up, online quantity of hot metal rises constantly. When the arrival of the hot metal from blast furnace exceeds 3 ladles/40min, online quantity of hot metal is almost independent on the arrival of the hot metal from blast furnaces.The conditions of three casters in continuous casting depend on the arrival of the hot metal from blast furnaces and charging period of converters .It is good for casting to improve arrival of the hot metal from blast furnaces and charging period of converters. When the arrival of the hot metal from blast furnaces is at low speed, e.g. 3 ladles every 60mins, it becomes a bottleneck that will break down continuous casting. Speeding up the arrival of the hot metal from blast furnaces, e.g. over 3 ladles every 40mins, charging period of converters will become a bottleneck throughout process of steel-making and continuous casting. When the arrival of the hot metal from blast furnaces exceeds 3 ladles/40min, charging period of converter is almost independent on to the arrival of hot metal from blast furnaces.Bottleneck before LF process varies with the arrival of the hot metal from blast furnaces and conditions of working procedures before the LF process. When the arrival of the hot metal from blast furnaces is a low rate of 3 ladles every 60mins and the charging period of converters is long, such as 14mins every blast or 10mins every blast, the bottleneck is at desulfurization working site. In the other cases, the bottleneck is converter working site. Even though converter is not bottleneck, it has a profound influence on the steel-making process. Because its mean waiting ratio is slightly lower than mean waiting ratio at bottleneck working site.The simulation system for logistics in steel-making process, which is based on ActiveX technology, is valid for simulating logistics in steel-making process. It is of good expansibility and expected to be beneficial for complex steel manufacturing process by adding component used in operation site and selecting proper simulation algorithm.