Abstract

We used a finite element method for the computer simulation of the temperature field in the apparatus of hot vacuum pressing (HVP) of alumina powder blanks. We considered the temperature dependence of the properties of the materials of the apparatus elements and the contact thermal and electrical resistances. The results of the calculations agreed to the laboratory temperature measurements, which confirms the reliability of the model. The results of computer experiments show that by selecting the materials of the HVP apparatus elements, we can create a practically uniform temperature field in the sample at the final stage of the sintering process and decrease significantly energy consumption in the entire sintering process. Depending on the arrangement of the equipment of the working cell of the HVP apparatus, the consideration of contact resistances can significantly affect the results of predicting the homogeneity of the temperature field of the sample during HVP.

中文翻译：

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利用模拟对热真空压制中的Al 2 O 3工件的温度场进行均质化

摘要

我们使用有限元方法对氧化铝粉末坯料的热真空压制（HVP）设备中的温度场进行计算机模拟。我们考虑了设备元件材料的性能以及接触热阻和电阻的温度依赖性。计算结果与实验室温度测量结果吻合，证实了模型的可靠性。计算机实验结果表明，通过选择HVP装置元件的材料，我们可以在烧结过程的最后阶段在样品中创建一个几乎均匀的温度场，并在整个烧结过程中显着降低能耗。根据HVP设备工作单元的设备布置，