| The sliding gate system is a device to control the flow rate of molten steel. It plays animportant role in the process of steel-making. When using it, the thermal stress caused by rapidtemperature change will lead to cracks and peeling even collapse, which will shorten its life,thereby affect the normal operation of the entire production process. Accompanied by the rapidinnovation of computer hardware, the continuous development of CAE technology, and finiteelement analysis methods and software provide reliable mechanical analysis techniques tolarge-scale steel-making equipment in recent years.Sliding gate is the subject object of the study, contrast and study the thermal stress of thedifferent shape of the skateboard. New design tools and methods such as three-dimensionalmodeling techniques, finite element method are used. Obtain the temperature field and thermalstress field in the initial temperature field, as well as thermal stress distribution in the differentshapes in the casting process, and contrast and analyze, provide a theoretical basis for thestructural design and improvement.Author studied the relevant literatures about sliding gate to understand the structure of thesliding gate system. Then research on the relevant theories of application of finite elementmethod in analysis of temperature, stress and heat-structure coupled stress was carried out. Thepopular CAE software, analyzing process and the relevant function of the software used in thearticle was introduced.The three-dimension geometirc model of the sliding gate system was created by SolidWorks.Based on the geometric model, its three-dimension CAE model was created in HyperMesh usingmapped gridding and free gridding technique to ensure the quality of grids. The sliding gatesystem was a typical apparatus which endured high temperature and large load. When it wasworking, it suffered strcture stress and heat stress. It related to the heat-structure coupling stressfield. The indirect method was used in the article to compute the temperature filed of the modelfirst. Through the calculation of temperature field, in sliding gate’s pouring process, themaximum temperature of the refractory material, the supporting institutions and the drivingdevice were lower than the material’s creeping temperature.In this paper, using the finite element software ANSYS and CAE before processingsoftware HyperMesh, analysis different shapes sliding plates’ heat-structure coupled stress, tothe shape of the optimization of sliding plate, the research has guiding significance. Analysingthe sliding gate system’s heat-structure coupled stress, compare the thermal stress in differentforms of sliding plates.Lastly, in the chapter six, summed up all the works of this paper, and pointed out theinadequate research work which needs to be improved. |
