中文摘要：

一个方法基于死扔实验，数学建模在高压力期间为热流动密度( HFD )和界面的热转移系数( IHTC )的决心被介绍死扔( HPDC ) process.Experiments 用步形状扔和商业镁合金被执行， AM50.Temperature 侧面被测量并且记录了使用在die 内嵌入的热电偶。基于这些温度读物， HFD 和 IHTC 成功地被决定，计算结果证明在金属死的 HFD 和 IHTC 连接在快阶段注射进程以后严厉地正确的增加直到接近他们的最大的值，在哪个以后他们到直到dies 低级的大部分的值减少被打开。热转移行为的不同模式在 die 并且在不同厚度扔之间被发现。扔越薄， HFD 和 IHTC 越快速到达了他们的稳定的状态。另外，为 HFD 和 IHTC 值的值是不同的在之间死并且在不同厚度扔。

英文摘要：

A method based on die casting experiments and mathematic modeling is presented for the determination of the heat flow density （HFD） and interfacial heat transfer coefficient （IHTC） during the high pressure die casting （HPDC） process.Experiments were carried out using step shape casting and a commercial magnesium alloy,AM50.Temperature profiles were measured and recorded using thermocouples embedded inside the die. Based on these temperature readings,the HFD and IHTC were successfully determined and the calculation results show that the HFD and IHTC at the metal-die interface increases sharply right after the fast phase injection process until approaching their maximum values,after which their values decrease to a much lower level until the dies are opened.Different patterns of heat transfer behavior were found between the die and the casting at different thicknesses.The thinner the casting was,the more quickly the HFD and IHTC reached their steady states.Also,the values for both the HFD and IHTC values were different between die and casting at different thicknesses.