研究生: |
張嘉儒 CHIA-JU CHANG |
---|---|
論文名稱: |
改善鋁合金凸緣翹曲特性之研究 The study of improving warped characteristics of aluminum alloys during flange forging |
指導教授: |
向四海
Su-Hai Hsiang |
口試委員: |
黃佑民
You-Min Huang 徐瑞坤 Ray-Quen Hsu |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 機械工程系 Department of Mechanical Engineering |
論文出版年: | 2005 |
畢業學年度: | 93 |
語文別: | 中文 |
論文頁數: | 81 |
中文關鍵詞: | 凸緣鍛造 、間隔環高度 、翹曲 |
外文關鍵詞: | flange forging, ring gap height, warping |
相關次數: | 點閱:261 下載:5 |
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本論文主要研究鋁合金凸緣鍛造成形過程中所產生的翹曲現象,
文中所採用有關模具及製程的參數包括:模具轉角、持溫時間、胚料加熱溫度、間隔環高度、材料種類、胚料直徑、摩擦條件及表面處理等。經一系列之實驗後觀察鍛造成品之翹曲現象,進行分析翹曲之發生原因並尋找有效解決翹曲之對策。
經由實驗結果可獲得以下之結論:第一、模具截角設計可以有效改善翹曲現象。第二、較大的間隔環高度與乾摩擦可以改善翹曲問題。第三、在乾摩擦條件下若素材之表面加以拋光處理,可以獲得最佳凸緣外形輪廓和最佳的凸緣底面。第四、素材之表面有車削處理可以提供良好的潤滑效果並降低鍛造負荷。由本論文對於鋁合金凸緣鍛造所產生翹曲之原因探討及解決翹曲所採取之對策確有其成效,藉此,希望對於學術研究及相關產業能有所助益。
The main purpose of this study aims to investigate the warping problems during flange forging process of aluminum alloys. The process parameters considered in this study are die corner radius, hold time at a specified temperature, billet heating temperature, ring gap height, type of material, billet diameter, friction condition, and surface treatment. After a series of experiments , the warping characteristics of the flange forging are analyzed and the effective solutions to solve the warping problem can be found.
Through the experiments the following conclusions can be made : First, die corner for chamfer design can improve the warping phenomenon effectively. Second, the larger ring gap height and dry friction can improve warping problem. Third, polish treatment of the billet can obtain the best flange outer protruding shape and the best bottom flatness in the dry friction condition. Forth, turning treatment of the billet diameter can offer the good lubrication result and reduce the pressure of forging. These results of this study do offer some useful knowledge about the warping problem of aluminum alloys flange forging process. By doing so, this report will be useful to the academic and relative industries.
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