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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(英文),2017,46(10):2957~2962.[HU Zhi-hua,CHEN Ming-he and 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.]
Research on oblique bending control of four roll bending for section of 2099-T83 Al-Li alloy
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Received:June 15, 2015  Revised:July 19, 2015
DOI:
Key words: Al-Li alloy  2-section  roll bending  oblique bending
Foundation item: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)
Author NameAffiliation
HU Zhi-hua,CHEN Ming-he and XIE Lan-sheng  
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Abstract:
      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.
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