CAJ | 학술논문

时效成形在整体壁板的制造中有重要应用。整体壁板的时效成形一般在热压罐中进行，通过对真空袋抽真空达到壁板贴模的目的。真空膜破袋是时效成形工艺的主要事故，分为成形加载过程中的破袋和时效过程中的破袋。该文提出了补充成形概念，即破袋后零件在同一模具下可再次时效成形，不影响零件成形精度。以2124 T851铝合金为研究对象，借助商业软件ABAQUS模拟不破袋的时效成形和出现破袋后的补充成形，比较两种成形后零件尺寸偏差；对厚板试件进行补充成形试验验证，观察金相组织变化。通过对 T 型梁和带筋壁板仿真分析，零件成形最大偏差小于0.05 mm ，满足工程应用要求；试验表明，厚板试件的金相组织无明显变化，零件偏差在0.15mm以内，补充成形能有效弥补时效成形过程中出现的破袋缺陷。
시효성형재정체벽판적제조중유중요응용。정체벽판적시효성형일반재열압관중진행，통과대진공대추진공체도벽판첩모적목적。진공막파대시시효성형공예적주요사고，분위성형가재과정중적파대화시효과정중적파대。해문제출료보충성형개념，즉파대후령건재동일모구하가재차시효성형，불영향령건성형정도。이2124 T851려합금위연구대상，차조상업연건ABAQUS모의불파대적시효성형화출현파대후적보충성형，비교량충성형후령건척촌편차；대후판시건진행보충성형시험험증，관찰금상조직변화。통과대 T 형량화대근벽판방진분석，령건성형최대편차소우0.05 mm ，만족공정응용요구；시험표명，후판시건적금상조직무명현변화，령건편차재0.15mm이내，보충성형능유효미보시효성형과정중출현적파대결함。
The age forming takes an important role in making integral panel ,which usually be conducted in the autoclave .In or-der to paste the covering with membranes ,it needs to evacuate the vacuum bag .During aging forming process , the broken bag of vacuum membranes is one of the most important accident in age forming . The broken bags can be roughly divided into two kinds:the broken bags in loading process and the broken bags in aging process . This paper mainly focuses on the solving of bro-ken bags technological accident and puts forward a new concept-supplementary forming .That is to say ,it tries to explore that af-ter being tackled by the broken bags ,whether the components under the same mould could age form again with losing their accu-racy . Using ABAQUS , the paper takes 2124 T851 aluminum alloy as the object to simulate the non-broken bags age forming and broken bags age forming ,and analyzes the deviation of the components under the two different processes ;At the same time ,by verifying the supplementary forming of thick plate sample , it tries to observe the changes of the microstructure . Through the simulating analysis of T-beam and steel board , it finds out that the maximum deviation of the components is under 0.05 mm , which meets the requirement of the project . The tests showed , the microstructure of thick specimen has no significant change , and the deviations of parts is within 0.15 mm . So , the supplementary forming can be used to solve the broken bags accident in age forming .