在鑄造過程之熱傳模式的分析中，模與金屬界面熱傳情形是一關鍵性的問題，若無法妥善地處理此界面條件，會直接影響分析的結果。最簡單的界面條件是假設模與（模穴中的）金屬是緊密接觸，即溫度與熱通量在此界面是連續的。但此項假設與真實情況會有所差異，而實際上是需要一界面熱阻或等效熱傳係數（h）來連接模與金屬兩邊的熱通量。同時此界面熱傳係數之獲得對模式研究者是非常重要的。
　　本研究針對濕砂模的鑄造，使用鋁、錫及鋅作為鑄造材料，以不同大小之圓柱體與矩形體作為鑄件模型，用熱電偶量測出凝固過程溫度場的變化情形，採用反算法求出金屬/砂模間界面之金屬溫度，進而求出傳出金屬界面之熱通量與等效熱傳係數。
　　本研究對於濕砂模與鑄件間之等效熱傳係數，已完成初步的研討工作，所得的成果可以作為日後更進一步研究及實際套裝軟體應用的基礎。　

　　In the heat-transfer analysis of a casting process, how to handle the heat transfer condition at the mold/metal interface is a key problem. If it is not manipulated properly, that will directly affect the final result of analysis. The simplest one is to assume that it is perfect contact at the interface (i.e., the temperature and the heat flux are continuous there). However, this deviates from the real condition and it needs a heat resistance or an effective heat transfer coefficient to connect the heat fluxes from both sides of the interface. To find the effective heat transfer coefficient is very important to the analyzer of casting processes.
　　This research, emphasizes on the castinng of sand mold, with the casting materials of aluminum, tin, and zinc, to produce casting model by different sizes of cylinder and rectangle. Also, to examine the temperature situation of the solidification process by thermal couple, and to count the metal temperature of the interface between metal and sand mold, in order to calculate the heat flux and effective heat transfer coefficient of the metal interface.
　　This research has finished the initial study of the effective heat transfer coefficient between sand mold and casting. The result can be the basics of the further research, and the application of package software in the future.

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