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针对陶瓷成型工艺中出现的气孔缺陷,建立能准确描述陶瓷料浆充填过程的数学模型,以典型结构的A-95陶瓷试样为例,研究入口压力和尺寸对料浆充填流动过程的影响。通过对料浆充填流动过程的动态模拟分析,发现工艺参数不同时料浆充填过程有明显区别,对最终卷气分布有直接影响,其中低进口压力时底部涡旋区卷气严重,而高进口压力时最易发生卷气的区域则出现在中心圆弧处。
Aiming at the defects of pores in ceramic forming process, a mathematical model was established to accurately describe the filling process of ceramic slurry. Taking A-95 ceramic sample with typical structure as an example, the influence of inlet pressure and size on the filling and flowing process of slurry was studied. Through the dynamic simulation analysis of slurry filling flow process, it is found that there is a significant difference between the different filling process parameters of the slurry, which has a direct impact on the final gas distribution. In the case of low inlet pressure, The area where pressure is most prone to curl occurs at the center arc.