特种成形栏目是由北京机电研究所塑性工程技术中心①赞助刊出
第41卷第9期 Vol. 41No. 9
钣压技木
FORGING & STAMPING TECHNOLOGY
铝合金锥面筒形环件轧制成形数值模拟与实验研究
韩双",2，钱东升1,2
2016年9月 Sep2016
（1．武汉理工大学材料科学与工程学院，湖北武汉430070；2．武汉理工大学现代汽车零部件技术湖北省重点实验室，
湖北武汉430070）
摘要：铝合金异形截面环件是航天航空和国防装备的重要结构件，铝合金异形截面环件目前多采用自由锻成形或者简化为矩形截面环件后轧制成形，使环件生产周期长、材料利用率低、环件的组织性能差，严重限制了该类环件的应用和发展。针对
理工艺参数范围计算方法，并基于ABAQUS/Explicit平台建立该环件轧制过程的三维热力耦合有限元模型。通过分析毛坏结构对成形环件尺寸误差和变形均勾性的影响，得到了等截面积环件毛坏成形尺寸误差最小的结果。并根据模拟结果进行轧制实验验证，成功轧制出合格的锥面筒形环件
关键词：环件径向轧制；铝合金锥筒环件；ABAQUS/Explicit平台；尺寸误差；变形均勾性 DOI: 10. 13330/j. issn. 1000-3940. 2016. 09, 013
中图分类号：TG335.11
文献标识码：A
文章编号：1000-3940（2016）09-0064-07
Numericalsimulationandexperimentalstudyonaluminumalloy
tapered cylindrical ring in roll forming
Han Shuang', Qian Dongsheng'-?
School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; 2. Hubei Key Laboratory of(1.
Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan 430070, China)
Abstract : Aluminum alloy profiled ring is an important structunal part for aerospace and national defense equipment. Nowadays aluminum profiled ring is usually fomed by free forging or by rolling forming simplified as rectangle section ring. So the ring production cycle is too long with low material utilization rate, poor ring organixation performance, which severely restricts the application and development of this ring. The rolling process of aluminum alloy 2A14 cone cylinder ring was numerically simulated and researched by experiments, and the similar shape: forging blank design method and the taper ring rolling process calculation method of the reasonable process parameters were put forward. Then, based on ABAQUS/Explicit platfom, the three dimensional coupled thermo mechanical finite element model for the ring rolling process was established. And by analyzxing the influence of the blank structure on the dimension error and the deformation uni-formity of the formed ring, the minimum size error of equal section area blank was obtained. Furthermore, the simulation result was veri-fied by experiment of rolling, and the qualified tapered cylindrical ring was rolled out successfully.
Key words : radial ring rolling; aluminum alloy tapered eylindrical ring; ABAQUS/Explicit platform; size error; deformation uniformity
铝合金异形截面环件是航天航空和国防装备的重要结构件，环件的性能对装备的安全可靠、稳定运行和服役寿命都至关重要。本文研究的锥面简形
收稿日期：20160128；修订日期：20160720
基金项目：国家国防基金资助项目（201607C001）；教育部创新团队发展计划项目（IRT13087）；中国汽车产业创新发展联合基金资助项目（U1564202）
作者简介：韩双（1992-），男，额土研究生 E-mail: 13037104598@ 163. com
通讯作者：钱东升（1982），男，博士，别数授 E-mail: qiands@ whut. edu. cn
环件为例的典型异形截面环件，如图1所示。环件的材料为2A14铝合金，该材料的锻造温度范围窄、热加工时应变速率小，热压加工成形困难。环件的内外表面都具有一定的锥度，且锥度相等；环件的高径比大于1，高径比较大，导致环件轧制过程的不稳定。该类环件主要的传统加工方法为锻粗冲孔后经过反复的拉拔、扩孔得到环件件，再经过切削加工出截面轮廓。这种生产制造工艺存在诸多缺点，如成形工艺复杂，且每次变形前环件都需要进行加热保温，环件生产周期长，反复的加热使环件的微观组织发生粗化，进一步降低了环件的性能，