|
摘要：
|
|
以5A06铝合金高筋蒙皮为对象，研究了高筋蒙皮件的结构尺寸及其热压成形工艺中的变形温度、保温时间、保压压力等工艺参数对热压成形件尺寸精度的影响规律。高筋蒙皮热压成形时，随着筋高与蒙皮厚度比值的增加，蒙皮表面凹陷程度增加，端面收缩程度减小；随着保压压力和保温时间的增加，蒙皮表面凹陷程度降低，端面收缩程度增加，侧面倾斜角度降低，回弹减小；随着横向筋宽度的降低，表面凹陷程度减小，端面收缩程度增加，当横向筋宽度降低至2 mm时出现高筋起皱；变形温度对表面凹陷程度和端面收缩程度没有明显的影响。根据5A06铝合金高筋蒙皮热压成形实验研究，确定最佳工艺参数为：变形温度为350~400 ℃，保温时间为40 min以上，保压压力为6 MPa左右。
|
|
For high-stiffener integral panel of 5A06 aluminum alloy, the influence laws of structural dimensions for high-stiffener integral panel part and the process parameters during the thermal forming process, such as deformation temperature, holding time and holding pressure etc., on the dimension accuracy of thermal formed parts were studied. During the thermal forming of high-stiffener integral panel, with the increasing of the ratio of stiffener height to skin thickness, the surface indentation of skin increases, and the shrinkage of end face decreases. Then, with the increasing of the holding pressure and holding time, the surface indentation of skin decreases, the shrinkage of end face increases, the inclination angle of side face decreases, and the springback decreases. However, when the width of horizontal stiffener decreases, the surface indentation decreases, and the shrinkage of end face increases. Furthermore, when the width of horizontal stiffener is not bigger than 2 mm, the high stiffener wrinkles, and the deformation temperature has no significant effect on the surface indentation and the shrinkage of end face. Finally, according to experimental research on the thermal forming of high-stiffener integral panel for 5A06 aluminum alloy, the best process parameters are the holding temperature of 350-400 ℃, the holding time of 40 min or more and the holding pressure of 6 MPa.
|
|
基金项目：
|
|
国家自然科学基金青年科学基金项目（NSFC51805256）
|
|
作者简介：
|
|
秦中环（1989-），男，硕士，高级工程师，E-mail：qq344041159@126.com
|
|
参考文献：
|
[1]曾元松, 黄遐, 黄硕. 蠕变时效成形技术研究现状与发展趋势[J]. 塑性工程学报, 2008, 15(3):1-8.
Zeng Y S, Huang X, Huang S. The research situation and the developing tendency of creep age forming technology[J]. Journal of Plasticity Engineering, 2008, 15(3):1-8.
[2]赵长喜, 李继霞. 航天器整体壁板结构制造技术[J]. 航天制造技术, 2006, (4):44-48.
Zhao C X, Li J X. The manufacturing technology of integral panel on spacecraft [J]. Aerospace Manufacturing Technology, 2006, (4):44-48.
[3]陈浩, 曲中兴, 张立武. 航空航天整体结构件新型校形技术研究现状[J]. 航天制造技术, 2017, (1):11-16.
Chen H, Qu Z X, Zhang L W. Research status of new correction technology of aerospace monolithic component[J]. Aerospace Manufacturing Technology, 2017, (1):11-16.
[4]曾元松, 尚建勤, 许春林, 等. ARJ21飞机大型超临界机翼整体壁板喷丸成形技术[J]. 航空制造技术, 2007, (3):38-41.
Zeng Y S, Shang J Q, Xu C L, et al. Peening technology of ARJ21 large-scale supercritical wing integral wall panel[J]. Aeronautical Manufacturing Technology, 2007, (3):38-41.
[5]湛利华, 杨有良. 大型构件蠕变时效成形技术研究[J]. 航空制造技术, 2016, (13): 16-23.
Zhan L H, Yang Y L. Research on creep age forming technology for large integrated component[J]. Aeronautical Manufacturing Technology, 2016, (13): 16-23.
[6]付守冲, 杨立军, 王扬, 等. 5A06铝合金交叉筋壁板激光诱导自由成形扭曲现象研究[J]. 科学技术与工程, 2016, 16(35): 45-51.
Fu S C, Yang L J, Wang Y, et al. The study of the twisting phenomenon of panel with crossed reinforcing bars under laser forming technology[J]. Science Technology and Engineering, 2016, 16(35): 45-51.
[7]GB/T 3880.1—2012, 一般工业用铝及铝合金板、带材第1部分：一般要求[S].
GB/T 3880.1—2012, Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering—Part 1: Technical conditions of delivery[S].
[8]GB/T 3190—2008, 变形铝及铝合金化学成分[S].
GB/T 3190—2008, Wrought aluminium and aluminium alloy—Chemical composition [S].
[9]孙梦莹, 毕宝鹏. 5A06铝合金板材超塑气胀成形壁厚均匀性研究及模具设计[J]. 热加工工艺, 2016, 45(11):132-135.
Sun M Y, Bi B P. Research on thickness uniformity of 5A06 aluminum alloy sheet superplastic gas bluging forming and its die design[J]. Hot Working Technology, 2016, 45(11):132-135.
[10]刘奇, 李保永, 秦中环, 等. 铝合金空间异形薄壁构件塑性成形工艺[J]. 锻压技术, 2018, 43(11):42-47.
Liu Q, Li B Y, Qin Z H, et al. Study on plastic forming process of aluminium alloy spatially shaped thin-walled components[J]. Forging & Stamping Technology, 2018, 43 (11):42-47.
[11]秦中环, 徐柄桐, 李保永, 等. 5A06铝合金薄壁球形封头高温气胀成形工艺研究[J]. 航天制造技术, 2019, (1): 7-11.
Qin Z H, Xu B T, Li B Y, et al. Research on high temperature gas bulging forming of aluminum alloy 5A06 for thin wall spherical head[J]. Aerospace Manufacturing Technology, 2019, (1): 7-11.
[12]邵天巍, 郎利辉, 赵香妮, 等. 5A06铝镁合金温热环境变形机理的研究[J]. 精密成形工程, 2019, 11(3): 104-110.
Shao T W, Lang L H, Zhao X N, et al. Deformation mechanism of 5A06 aluminum-magnesium alloy sheet in warm environment[J]. Journal of Netshape Forming Engineering, 2019, 11(3): 104-110.
[13]欧玲, 浦荣, 曾方欣, 等. 5A06合金高温塑性变形行为[J]. 锻压技术, 2018, 43(6):123-128.
Ou L, Pu R, Zeng F X, et al. Plastic deformation behavior of alloy 5A06 at high temperature[J]. Forging & Stamping Technology, 2018, 43(6):123-128.
|
|
服务与反馈：
|
|
【文章下载】【加入收藏】
|
|
|
|
