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首页> 外文会议>International Symposium on Computer Applications in Metals Processing Aug 26-29, 2001 Toronto, Ontario, Canada >MATHEMATICAL MODELLING OF SQUEEZE CAST MAGNESIUM ALLOY AZ91D
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MATHEMATICAL MODELLING OF SQUEEZE CAST MAGNESIUM ALLOY AZ91D

机译：挤压铸造镁合金AZ91D的数学建模

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摘要

A mathematical model has been developed to simulate heat transfer and solidification phenomena of squeeze cast magnesium alloy (AZ91D). The model was based on the control-volume finite difference approach and on the enthalpy method. The computation was carried out to understand the effect of varying processing parameters, such as applied pressure, die temperatures, on the solidification and cooling behaviors of AZ91D. The model computed the temperature distributions, the cooling curves, the shape and position of the phase front, and total solidification time of a cylindrical squeeze casting. The predicted results show that high applied pressures and low die temperatures result in high heat transfer across casting/die interface, and consequently solidification and cooling rates increase.
机译：已开发出数学模型来模拟挤压铸造镁合金（AZ91D）的传热和凝固现象。该模型基于控制量有限差分法和焓法。进行计算是为了了解变化的加工参数（例如施加的压力，模具温度）对AZ91D的凝固和冷却行为的影响。该模型计算出了圆柱形挤压铸件的温度分布，冷却曲线，相前部的形状和位置以及总凝固时间。预测的结果表明，较高的施加压力和较低的模具温度会导致整个铸件/模具界面之间的热传递较高，因此，固化和冷却速率会提高。

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