本文選題：鋁合金封口 + 旋壓�。� 參考：《長春理工大學》2017年碩士論文

【摘要】：本文主要利用旋壓工藝研究鋁合金氣瓶封口成形。旋壓工藝成形技術作為一種先進的塑性成形工藝,已經(jīng)廣泛應用于國防軍工和航空航天領域。旋壓成形占據(jù)鋁合金氣瓶成形的絕大部分,對其核心工藝的研究有著重要的參考意義。本文采用ABAQUS進行實際封口過程的有限元模擬,分析了成形機理和成形過程中的受力情況。同時從旋壓溫度、進給量等方面研究其對鋁合金封口成形的影響。通過有限元模擬得到合理的實驗參數(shù),為以后實際生產(chǎn)提供理論支持。研究結果如下。(1)通過有限元模擬分析鋁合金封口過程,可以得出封口過程中鋁合金的應力應變狀態(tài)。旋輪與坯料接觸區(qū)域受力為三向應力狀態(tài),徑向旋壓分力最大,切向旋壓分力最小。(2)通過不同的工藝參數(shù)進行有限元分析,然后得到比較合理的一組參數(shù)。合適的溫度以及旋輪進給量都是影響封口質量的重要參數(shù)。(3)根據(jù)實驗結果,分析實驗過程中出現(xiàn)缺陷的原因,坯料缺陷、工藝參數(shù)等都跟封口缺陷的產(chǎn)生有關,同時根據(jù)缺陷提出了相應的預防措施。通過有限元模擬跟實驗的結果對比表明:有限元模擬得到的結果起到一定的參考作用,但不能完全依賴于模擬的結果,還需要通過實驗來進一步優(yōu)化工藝參數(shù),最后得到最優(yōu)的工藝方案。
[Abstract]:In this paper, the spinning process is used to study the seal forming of aluminum alloy cylinder. As an advanced plastic forming technology, spinning process has been widely used in the field of national defense and aerospace industry. Spinning forming accounts for the majority of aluminum alloy cylinder forming, which has important reference significance for the study of its core technology. In this paper, Abaqus is used to simulate the actual sealing process by finite element method, and the forming mechanism and the stress during the forming process are analyzed. At the same time, the effect of spinning temperature and feed rate on aluminum alloy seal forming was studied. Reasonable experimental parameters are obtained by finite element simulation, which provides theoretical support for practical production in the future. The results are as follows: 1) the stress and strain state of aluminum alloy can be obtained by finite element simulation. The contact zone between the rotary wheel and the blank is in a three-direction stress state, the radial spinning force is the largest, and the tangential spinning force is the smallest. The finite element analysis is carried out through different process parameters, and then a more reasonable set of parameters is obtained. Appropriate temperature and feed rate of rotary wheel are important parameters affecting sealing quality. According to the experimental results, the causes of defects in the experiment process, blank defects, technological parameters and so on are all related to the production of sealing defects. At the same time, the corresponding preventive measures are put forward according to the defects. The comparison between finite element simulation and experimental results shows that the results obtained by finite element simulation play a certain reference role, but can not be completely dependent on the results of simulation, and need to be further optimized by experiments. Finally, the optimal process scheme is obtained.
【學位授予單位】：長春理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TG306

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本文編號：2008239