鋁合金具有質輕、耐蝕性佳、導電性佳、易成形等優點，為冷鍛產業中使用最廣泛的金屬，而鍛造產品的小型化是目前主要製作與發展方向。
本研究針對A6061高長度直徑比胚料之冷鍛成型方式，採用DEFORM有限元素軟體為模擬工具，分析人工支台體(Abutment)冷鍛模具幾何設計與胚料之可成形性，並進行實驗以驗證其模擬分析之準確性與合理性，將實驗所得知結果，未來做為金屬鍛造加工之研發與應用參考。

In this paper, the closed die forming process is used to fabricate the dental abutment which is a crucial component of dental implant system. To perform high dimensional accuracy and keep high surface quality in the small parts, cold forging process was conducted. The forging process has the following advantages: time-consuming, high precision, mass production, high efficiency and lost cost. Aluminum alloy was selected to forge in this study. Different dimensions of length with different stroke were used to investigate the formability. Moreover, the variation of hardness of forged parts was also discussed. A finite element analysis (FEA) was built and process parameters such as punch speed and stroke associated with formability were studied. The results of this study revealed that the dental abutments were successfully formed. Moreover, numerical results have a good agreement with experimental results.

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