Transactions of Materials and Heat Treatment

Title：Research on extrusion forming process of cylindrical parts with branches

Authors： Liu Cuixia Zhang Zhimin Li Guojun Zhang Fuxiang

Unit： North University of China

KeyWords： aluminum alloy cylindrical parts with branches folding hot extrusion

ClassificationCode：TG376.2

year,vol(issue):pagenumber：2015,40(3):53-57

Abstract：

To obtain cylindrical parts with branches who possess excellent overall performance, one-step integral extrusion forming process considering its shape characteristics was proposed. The process, analyzing the defects generated during forming, was improved and verified by the finite element simulation. Two kinds of improved processes were proposed and verified by finite element simulation. Plan one is cutting heat treatment preforming heat treatment final forming (cupping) machining, and the extrusion parts could not be filled completely. Plan two is cutting heat treatment backward extrusion forming heat treatment final forming (flanging) machining, and the qualitied extrusion parts were obtained. In addition, the variation of load-stroke curve and the cause of the particular nodes on the curve were analyzed, and the feasibility of plan two was identified. Then, the mold was designed and the process experiment was conducted for plan two. The experiment results show that the cylindrical extrusion parts with branches are well filled and their requirements are met.

Funds：

国家973研究专项（2012CB626808）

刘翠侠(1987-)，女，硕士研究生通讯作者：张治民(1956-)，男，博士，教授，博士生导师

Reference：

［1］黄晓燕,刘波.轻合金是武器装备轻量化的首选金属材料[J].轻合金加工技术,2007,35(1):12-15.Huang X Y, Liu B. Light alloy is first choice metal materials for weapon equipment light weighting[J].Light Alloy Fabrication Technology, 2007, 35 (1): 12-15.
［2］王涛, 尹志民.高强变形铝合金的研究现状和发展趋势[J].稀有金属, 2006, 30(2): 197-202.Wang T, Yin Z M. Research status and development trend of ultra-high strength aluminum alloys[J]. Chinese Journal of Rare Metals, 2006, 30(2): 197-202.
［3］侯丽丽,尹志新,樊新波.铝基复合材料的研究现状及发展[J].热加工工艺,2008,37(10): 84-88.Hou L L, Yin Z X, Fan X B. Study status and progress of aluminum matrix composite [J]. Hot Working Technology, 2008,37 (10): 84-88.
［4］吴继超,张艳秋,赵亚楠,等.铝合金旋转盘锻件等温精密成形工艺研究[J].锻压技术,2014,39(1): 14-20.Wu J C, Zhang Y Q, Zhao Y N, et al. Study on isothermal precision forming process of aluminum alloy rotating disk[J]. Forging & Stamping Technology, 2014, 39 (1): 14-20.
［5］胡新慧,刘思波,李艳芹,等.金属塑性成形技术的发展方向及问题探讨[J].中国化工贸易,2013, 5(7): 492-493.Hu X H, Liu S B, Li Y Q, et al.The development direction and questions discussion of metal forming technology [J]. China Chemical Trade, 2013, 5 (7): 492-493.
［6］贾杨,王松林.铝合金叉形模锻件的制坯工艺研究[J].轻合金加工技术,2014,42(1):57-59.Jia Y, Wang S L. Research on blanking process for aluminum alloy fork forging [J]. Light Alloy Fabrication Technology, 2014,42 (1) :57-59.
［7］于建民. 枝桠类零件多向加载无飞边成形理论与技术研究[D],太原：中北大学，2012.Yu J M.Study on Forming without Flash in The Multi-directional Loading Theory and Technology for The Part With Branch[D]. Taiyuan: North University of China,2012.
［8］吴立波,朱庆,薛勇,等.铝合金筒件侧向等温挤压成形的金属流动分析[J].锻压技术,2013,38(4):51-53.Wu L B, Zhu Q, Xue Y, et al. Metal flow analysis of aluminum tube lateral isothermal extrusion [J]. Forging & Stamping Technology, 2013,38 (4) :51-53.
［9］刘静安.金属挤压成形理论与技术发展的现状与趋势(3)[J].铝加工,2001,24(1): 4-9.Liu J A. Status and trends of metal extrusion theory and technology development (3) [J].Aluminum Machining, 2001,24 (1): 4-9.
［10］王小兰.大口径厚壁长管件挤压成形数值分析及优化[D].天津：天津理工大学,2012.Wang X L. Analysis and Optimization on Numerical Simulation of Extrusion Process of Large-diameter Seamless Steel Tube with Thick Wall [D]. Tianjin:Tianjin University of Technology,2012.
［11］刘磊超,董湘怀,李从心.侧向挤压过程的耦合无网格-有限元法数值模拟[J].上海交通大学学报.2008,42(9):1424-1428.Liu L C, Dong X H, Li C X. Numerical Simulation of lateral extrusion by an EFG-FE coupling method[J]. Journal of Shanghai Jiaotong University. 2008,42 (9):1424-1428.
［12］谢仁沛,冯永琦,李渭清,等.径向锻造TC4合金厚壁管材的工艺研究[J].稀有金属快报.2007,26(3):40-42.Xie R P, Feng Y Q, Li W Q,et al. Radial forging tc 4 titanium alloys thick-wall tube[J].Rare Metals Letters.2007,26 (3) :40-42.
［13］郑伟龙. 变径管形体热挤压成形工艺的研究[D]. 太原:中北大学,2013.Zheng W L. The Research of Variable Diameter Pipe Hot Extrusion Forming Technology [D]. Taiyuan: North University of China, 2013.

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