本研究主要是將商用顯微組織數值模擬系統應用於黃銅在真空連續鑄造過程中，其凝固行為及內部晶粒型態與大小之預測，並針對不同的實驗條件做實驗驗證。
本研究所選用主要方案為直徑8mm之C2600黃銅線材，實驗採用水平連續鑄造並針對不停澆鑄溫度及不同鑄造速度下進行實驗，最後再進行金相觀察。此外亦有另一組實驗為直徑為20mm之不同成分之黃銅棒材進行澆鑄溫度為1100℃且澆鑄速度為600mm/min之上引式連續鑄造實驗，並觀察其金相。
　　本研究使用ProCASTTM進行溫度場數值模擬，並與實驗結果作驗證以證實溫度場數值之可信度。接著利用3D-CAFÉTM模擬黃銅鑄件的成核成長型態，首先先針對一對照組方案進行其微組織模擬，以找出合適的模擬參數，並與實驗結果比對以證實此模擬參數之可信度。再利用此參數進行不同實驗參數下之微組織型態預測。最後，針對上述之模擬結果，進行實驗結果比對及實驗機構探討。

The research applies the numerical simulation on the vacuum continuous casting of brass predicting its solidification behavior and grain morphology and verifying the result by experiments with different experimental parameters.
The experiment aims at two different kinds of continuous casting facilities, the horizontal continuous casting for 8-mm-diameter brass rods and upward continuous casting for 20-mm-diameter brass rods. The three mainly experimental parameters are casting temperature, casting velocity and material composition.
The commercial software, ProCASTTM, is adopted in this thesis to simulate the temperature distribution and verify the experimental result. By using 3D-CAFETM, a module in ProCASTTM, the simulations of process of grain nucleation and grain growth is executed. First, a specific experimental parameter has been chosen to find out the simulated parameter. Next, verify the simulated parameter is correct with experiments. A series of the cases in different experimental parameters are employed with the simulated parameter. Finally, compare all the simulated results with experimental results and discuss the mechanism.

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