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根据企业铸造过程的原始工艺,利用三维ProCAST软件建立轴座铸件浇注系统模型,并对铸造充型和凝固过程进行模拟,观察温度场和流场的变化情况,预测铸造缺陷的位置。对模拟结果进行分析,并改进初始工艺方案。对优化后的不同方案进行模拟分析,结果表明,通过改变浇注位置,将底注式改为顶注式能使金属液有效充满型腔,且增加冷铁能有效地加快热节处金属液的冷却速度,从而减少缩孔、缩松等缺陷,提高铸件质量。利用振动铸造机对铸造过程施加振动,验证了多维振动有助于提高金属液的充型能力。
According to the original process of the enterprise casting process, the three-dimensional ProCAST software is used to build the casting system model of the shaft seat casting. The filling and solidification process of the casting is simulated. The changes of the temperature field and the flow field are observed to predict the location of the casting defects. Analyze the simulation results and improve the initial process plan. Simulation results show that by changing the pouring position, changing the style of bottom betting to top pouring can effectively fill the cavity with molten metal, and adding cold iron can effectively speed up the hot metal Cooling rate, thereby reducing shrinkage, shrinkage and other defects, improve casting quality. Vibrating casting machine is used to vibrate the casting process, which proves that the multi-dimensional vibration helps to improve the filling ability of molten metal.