6061鋁合金薄殼管件旋壓成型加工與機械性質研究

The research of 6061 aluminum alloy tube spinning and mechanical properties technology

謝統生(Toong-Sheng Shieh)

指導教授 ： 蘇 艾教授

元智大學/工程學院/機械工程學系/碩士(2006年)

摘要

本論文主要係藉由6061鋁合金旋型性的探討，找尋出6061鋁合金旋壓成型加工參數，並將研究結果回饋做為高精度、高強度不等內徑油箱外殼旋型研製方案訂定、旋型工具設計及加工規劃等相關之參考。
依研究與實驗結果顯示，結合多道次順流旋型與縮口旋型技術及固溶和自然時效之熱處理，可製造大直徑(超過400 mm)，高精度、高強度非等內徑之油箱外殼。故將退火後之6061擠型鋁管，經由T4處理後車製成13mm厚旋胚，採用數組不同外形之滾輪，搭配合適之減縮率、主軸轉速、進給速率、滾輪軸向間距等參數，進行二次以上之順流旋型後，再執行內台階的縮口旋型，旋製帶有內凸緣之大型油箱外殼，於工程上最為可行且是最經濟的一種加工製程。

關鍵字

塑性加工 ； 旋壓成型加工、彎旋型 ； 剪旋型、流旋型、 縮口旋型

並列摘要

In this thesis, we study on the spinnability of the 6061 Aluminum Alloy and find out the optimum manufacturing parameters of the flow-forming process. The result of study can be directly applied to design the appropriate forming tools and plan the fabrication process for the high precision, high strength, thin-wall tube of the long range
missile.
From the research and experiment result, a multi-step forward flow–forming process combined with neck-In forming technique and typical solution and nature aging heat-treatment have been developed to fabricate the large diameter (more than 400mm), long- thinned, high strength, high precision and complex geometry - varied inner and outer diameter of cylindrical fuel tank. In order to obtain the reliable and economic manufacturing process, choosing the commercial annealed 6061-extrusion tube and applying the T4 solution heat-treatment, machining the tube’s wall-thickness to 13mm as preform. Then using different geometry of shape rollers and selecting the appropriate reduction ratio of wall thickness for each spinning path, adjusting the mandrel revolution speed, shape roller traveling feed rate, interval distance of rollers and performing multi-step flow-forming process, finally applying the neck-in forming process to obtain the strengthen rib
on the inner side of final product.

並列關鍵字

Plastic forming ； Spinning, Contour Spinning ； Shear Spinning , Flow Spinning, Neck-In Spinning.

參考文獻

Engineering, pp.26~29,1970. 14.F. J. Pistol, " Spinning, Shear Forming And Flow Forming ", Sheet

1.Yih Chang, Chin-An Huang, Wen-Chen Han, Song-Ching Chang, Yao-Ti Hung, Toong-Sheng Shieh ,Yu-Pu Chiu and Chien-Chun Wang”Mechanical Properties and Microstructure Investigation of Thermomechanical Spinning of AA 2014 Aluminum Tubes”, International Conference on Thermomechanical Processing of Steel and Other Materials, Wollongong, Australia,pp.1095~1101, 1997.

2.Chin-An Huang, Yih Chang, Song-Ching Chang, Wen-Chen Han, and

Toong-Sheng Shieh, “Tube Spinnability of AA 7075 Aluminum Alloy”,

3.S.-C. Chang, C.-C. Wang, C.-A. Huang, Y. Chang, T.-L. Chen,