In this paper, aiming at focusses on many problems existing in the mathematical model of temperature change in the low-pressure casting solidification process of aluminum alloy wheel hub, there is a big gap between the simulation and the actual temperature change, which affects the research on the solidification defects of the wheel hub. In order to study the solidification behavior of aluminum alloy hub in low-pressure casting process, the mathematical model describing the temperature change in the process of casting solidification is established by using different solidification latent heat methods. through finite element simulation and experiment, the temperature change in the process of aluminum alloy (A356) solidification is obtained to compare the difference between the temperature change described by different mathematical models, simulation and experiment. The results show that the temperature numerical model of "the temperature compensation heat capacity method" proposed in this paper is most consistent with the simulation temperature change during the solidification process of the aluminum alloy wheel in the simulation mold, which lays a good theoretical foundation for the study of the low-pressure casting process of the aluminum alloy wheel hub.

中文翻译：

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铝合金轮毂低压铸造凝固潜热的数值模拟

本文针对铝合金轮毂低压铸造凝固过程中温度变化数学模型中存在的许多问题，模拟与实际温度变化之间存在较大差距，影响了研究。轮毂的凝固缺陷。为了研究铝合金轮毂在低压铸造过程中的凝固行为，采用不同的凝固潜热方法建立了描述铸件凝固过程中温度变化的数学模型。通过有限元模拟和实验，获得了铝合金（A356）凝固过程中的温度变化，以比较不同数学模型描述的温度变化之间的差异，模拟和实验。结果表明，本文提出的“温度补偿热容量法”的温度数值模型与模拟模具中铝合金车轮凝固过程中的模拟温度变化最为吻合，为今后的研究奠定了良好的理论基础。铝合金轮毂低压铸造工艺的研究。