| 挤压-弯曲一体化成型铝合金弯曲型材的质量与性能 |
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| 引用本文： | 于立,刘志文,李落星,王群.挤压-弯曲一体化成型铝合金弯曲型材的质量与性能[J].机械工程材料,2012(7):72-76. |
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| 作者姓名： | 于立 刘志文 李落星 王群 |
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| 作者单位： | 湖南大学汽车车身先进设计与制造国家重点实验室;湖南大学材料科学与工程学院;湖南有色重型机械有限责任公司 |
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| 基金项目： | 湖南大学汽车车身先进设计制造国家重点实验室自主研究课题项目(60870005);国家“十一五”科技支撑计划重点课题项目(2007BAE38B04) |
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| 摘 要： | 通过改造传统挤压机,增加弯曲装置,对铝合金型材进行挤压-弯曲一体化成型,研究了辊轮半径和辊轮移动速度对成型质量的影响,基于有限元模拟获得了辊轮半径和辊轮移动速度等最佳工艺参数。结果表明:当型材挤出速度与辊轮移动速度相同时,铝合金型材的成型性较好;挤压-弯曲一体化成型工艺避免了传统拉弯工艺存在的回弹、表面划伤和截面变形等缺陷,提高了弯曲型材力学性能的均匀性。
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| 关 键 词： | 挤压-弯曲一体化工艺 有限元模拟 成型性能 |
Quality and Properties of Curved Aluminum Alloy Profile Formed by Extrusion-Bending Integration Process |
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| YU Li,LIU Zhi-wen,LI Luo-xing,WANG Qun.Quality and Properties of Curved Aluminum Alloy Profile Formed by Extrusion-Bending Integration Process[J].Materials For Mechanical Engineering,2012(7):72-76. |
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| Authors: | YU Li LIU Zhi-wen LI Luo-xing WANG Qun |
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| Affiliation: | 1.State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body; 2.College of Materials Science and Engineering,Hunan University,Changsha 410082,China; 3.Hunan Nonferrous Heavy Machinery Co.Ltd.,Changsha 410205,China) |
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| Abstract: | Through rebuilding traditional extruder and increasing a bending device,the profile was formed by extrusion-bending integration forming process,and the effects of roller radius and roller movement rate on forming quality were studied.The optimal process parameters of the roller radius and roller movement rate were obtained basing on finite element simulation.The results show that the forming capability of the aluminum alloy profile was fair good when the extrusion rate of the profile and roller movement rate were same.The extrusion-bending integration process could avoid the defects as follows: rebound,surface scratches and cross-section deformation,which were common during conventional drawing and bending process.The extrusion-bending integration process increased the uniformity of mechanical properties of the curved profile. |
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| Keywords: | extrusion-bending integration forming process finite element simulation forming capability |
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