Transactions of Materials and Heat Treatment

Title：Forming technology of a complex box-shaped part

Authors： Song Chao Li Guojun Zhang Zhimin Wu Ying

Unit： North University of China Jinxi Industries Group Co. Ltd.

KeyWords： aluminum alloy extrusion part complex box-shaped part preforming final forming

ClassificationCode：TG376

year,vol(issue):pagenumber：2016,41(11):15-20

Abstract：

The box-shaped part is of complex shape, uneven distribution and asymmetrical cross-section. During the extrusion process of the box-shaped part of a sheet, defects were formed to affect the performance of the part due to a non-constant flow in the part, and an extrusion part of uneven open-end and low material utilization was obtained. Defects and shortcomings of the complex box-shaped part of aluminum alloy in the extrusion process were analyzed in detail by finite element simulation. Then, a reasonable solution was proposed as increasing the preforming and improving the shape of preforming billets. According to the results of finite element simulation, a reasonable forming process of material as cutting-preforming-final forming and the billet shape of the preforming were determined. Furthermore, the experimental verification was carried out to obtain qualified extrusion parts. For such parts, the defects generated during forming can be overcome by increasing the forming times, optimizing the shape of billet etc., then the material utilization is improved.

Funds：

国防基础科研项目（JSJC2013204B403）

宋超（1991-），男，硕士研究生张治民（1956-），男，博士，教授，博士生导师

Reference：

［1］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 aluminium alloy rotating disk[J]. Forging & Stamping Technology，2014,39(1):14-20.
［2］刘文权，盈亮，王丹彤，等．热冲压成形过程细观损伤演化机理研究[J]．机械工程学报，2016,52(14):31-39.Liu W Q,Ying L,Wang D T,et al. Investigation of mesoscopic damage evolution mechanism of high strength steel in hot stamping process [J].Journal of Mechanical Engineering，2016,52(14):31-39.
［3］刘翠侠，张治民，李国俊，等.铝合金框体挤压件折叠缺陷改进方案的研究[J].热加工工艺，2015,44(7):157-160.Lui C X, Zhang Z M,Li G J, et al.Research on improvement scheme of folding defects for aluminum alloy frame extrusion forgings[J]. Hot Working Technology，2015，44(7):157-160.
［4］贾俐俐.挤压工艺及模具[M].北京:机械工业出版社，2004.Jia L L. Extrusion Technology and Die[M].Beijing:China Machine Press,2004.
［5］王明哲，王麟平，张宝红，等.铝合金锥壳体成形工艺分析[J].热加工工艺，2013,42(5):24-26.Wang M Z,Wang L P, Zhang B H, et al. Analysis on forming process of aluminum alloy conical shell[J]. Hot Working Technology, 2013,42(5):24-26.
［6］Yang Q S,Jiang B,Xiang Q,et al. Microstructure evolution and corrosion performance of AZ31 magnesium alloy sheets [J]. Rare Metal Materials and Engineering，2016,45(7):1674-1677.
［7］杨青，朱立群，李卫平，等.不同厚度铝合金试样的应力腐蚀开裂特性研究[J].稀有金属，2014, 38(4): 581-588.Yang Q,Zhu L Q,Li W P,et al.Stress corrosion cracking characteristics of aluminum alloy specimens with different thicknesses[J]. Chinese Journal of Rare Metals, 2014, 38(4): 581-588.
［8］刘翠侠，张治民，李国俊，等. 带枝桠筒形件挤压成形工艺研究[J].锻压技术，2015,40(3):53-61.Lui C X,Zhang Z M,Li G J,et al. Research on extrusion forming process of cylindrical parts with branches [J]. Forging & Stamping Technology，2015，40(3):53-61.
［9］张博，颜银标. 基于Deform-3D的铝合金支架挤压成形分析[J].热加工工艺，2015,44(7):167-171.Zhang B,Yan Y B.Analysis of extrusion forming of aluminum alloy bracket based on Deform-3D[J]. Hot Working Technology，2015，44(7):167-171.
［10］吴海伟，孟彬，鲍官军，等. 不对称万向节叉冷挤压成形有限元模拟和模具设计[J].现代制造工程，2010,(9):88-92. Wu H W,Meng B,Bao G J,et al. Finite element simulationand die design for cold extrusion process of asymmetric universal joint fork[J]. Modern Manufacturing Engineering, 2010，(9):88-92.
［11］秦月明．铝挤压机模拟等温挤压控制系统[J]．锻压装备与制造技术，2007,42(5):52-54．Qin Y M．Simulated isothermal extrusion control system in aluminum extrusion press[J]．China Metal Forming Equipment & Manufacturing Technology，2007, 42 (5):52-54.
［12］于学军. 数控冲床调试与维修[J].锻压设备与制造技术，2007,42(5):50-52.Yu X J. The commissioning and maintenance of the CNC punching machine[J]. China Metalforming Equipment & Manufacturing Technology，2007, 42(5):50-52.

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