胡智华,陈明和,谢兰生.2099-T83铝锂合金型材四轴滚弯的斜弯曲控制研究[J].稀有金属材料与工程,2017,46(10):2957~2962.[HU Zhi-hua,CHEN Ming-he,XIE Lan-sheng.Research on oblique bending control of four roll bending for section of 2099-T83 Al-Li alloy[J].Rare Metal Materials and Engineering,2017,46(10):2957~2962.]
2099-T83铝锂合金型材四轴滚弯的斜弯曲控制研究
投稿时间:2015-06-15  修订日期:2015-07-19
中文关键词:  铝锂合金  2形型材  滚弯  斜弯曲
基金项目:国家自然科学基金 (51164028); 江西省教育厅青年基金 (GJJ12446); 轻合金加工科学与技术国防重点学科实验室开放课题GF201201003)
中文摘要:
      2099-T83铝锂合金2形型材是大型客机C919中后机身重要桁架零件,四轴滚弯成形是加工此类零件的主要方法。由于铝锂合金比强度大,同时2形型材结构的非对称,相比于普通铝合金型材,铝锂合金2形型材滚弯成形中极易产生斜弯曲。为此,利用有限元软件ABAQUS对2形型材的四轴滚弯过程进行了模拟,分别研究了滚轮间隙、下滚轮与型材之间竖直方向预留间隙、左右滚轮X方向移动量对2形型材四轴滚弯中斜弯曲的影响,确定了最佳滚弯工艺参数。基于最佳滚弯工艺参数进行了滚弯工艺试验。结果表明,采用滚轮间隙0.2 mm、下滚轮与型材之间竖直方向预留间隙0.3 mm、左右滚轮X正方向移动量1.5 mm时能有效解决2形型材滚弯的斜弯曲问题。
Research on oblique bending control of four roll bending for section of 2099-T83 Al-Li alloy
英文关键词:Al-Li alloy  2-section  roll bending  oblique bending
英文摘要:
      Variable curvature 2-section of 2099 Al-Li alloy is important truss of Chinese independently developed large airplane C919, four roll bending forming is main method to manufacture this kind of part. Due to the high specific strength of Al-Li alloy and asymmetric structure of 2-section, compared to section of conventional aluminum alloy, 2-section of Al-Li alloy was extremely prone to oblique bending. Therefore, four roll bending process of 2-section was simulated by finite element software ABAQUS, effect of roller gap, clearance between bottom roller and profile in vertical direction, displacement in X direction of left and right rollers was researched on oblique bending during four roll bending of 2-section, best roll bending process parameters was confirmed. Roll bending process experiment was carried based on it. The results show that 0.2 mm for roller gap, 0.3 mm for clearance between bottom roller and profile in vertical direction, 1.5 mm for displacement in X direction of left and right rollers can effectively solve the problem of oblique bending for roll bending of 2-section.
作者单位E-mail
胡智华 南京航空航天大学 hu050930115@163.com 
陈明和 南京航空航天大学 meemhchen@nuaa.edu.cn 
谢兰生 南京航空航天大学  
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