在实际压铸实验的基础上, 求解了铸件--铸型界面换热系数$h$与铸件凝固速率$v$的关系. 结果表明, 二者呈线性变化关系: h=kh-v?v+ω(其中, 斜率$k_{h-v}$为铸型初始表面温度及铸件厚度的函数, ω为常数); 通过线性拟合确定kh-v和ω值, 从而确立换热系数与铸件凝固速率的关系. 这种关系同时适用于镁合金AM50和铝合金ADC12.
Based on die casting experiments, metal--die interfacial heat transfer coefficient (IHTC or h) was determined, and it is found that the IHTC changes linearly with the solidification rate v, i.e., h=kh-vv+ω, where kh-v is a function of the initial die surface temperature and the casting thickness while ω is a constant. Both kh-v and ω can be calculated by applying the regression method. Such relationship between h and v is suitable for both AM50 magnesium alloy and ADC12 aluminum alloy.
参考文献
| [1] | |
| [2] | |
| [3] | |
| [4] | |
| [5] | |
| [6] | |
| [7] | |
| [8] | |
| [9] | |
| [10] | |
| [11] | |
| [12] | |
| [13] | |
| [14] | |
| [15] | |
| [16] | |
| [17] | |
| [18] | |
| [19] | |
| [20] | |
| [21] | |
| [22] | |
| [23] | |
| [24] | |
| [25] | |
| [26] | |
| [27] | |
| [28] | |
| [29] | |
| [30] | |
| [31] |
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