锻压技术

高强铝合金异形复杂构件预成形优化设计

英文标题：Preforming optimization design on high-strength aluminum alloy special-shaped complex components

作者：李旭斌吴昂张治民张宝红贾泽伟

分类号：TG319

出版年,卷(期):页码：2019,44(9):56-62

摘要：

针对7075高强铝合金异形复杂构件常规挤压成形中的折叠、载荷过大及变形不均匀等缺陷，提出凹面毛坯预成形设计方法。采用Deform-3D有限元软件分析预成形毛坯凹面方向及凹面尺寸参数对成形载荷、变形均匀性的影响，确定优化的预成形凹面结构及尺寸参数，最后对优化结果进行物理实验验证，并取样进行了夏比缺口冲击实验与拉伸实验。实验结果表明：与传统挤压成形工艺比较，采用双凹面预成形毛坯的终成形载荷将降低39%以上，等效应变差值明显降低，变形更加均匀，且冲击韧性、抗拉强度与伸长率均有所提高。经成形实验验证了优化设计方案的合理性，研究结果将为高强铝合金异形复杂构件的预成形优化设计提供理论参考。

For the defects of folding, over-loading and uneven deformation in the conventional extrusion of high-strength 7075 aluminum alloy special-shaped complex components, the preforming design method of concave billet was proposed. Then, the influences of concave direction and dimension parameters of preformed billet on forming load and deformation uniformity were analyzed by finite element analysis software Deform-3D, and the optimized structure and dimension parameters of preformed concave were determined. Finally, the optimization results were verified by physical tests, and Charpy notched impact test and tensile test were conducted by taking samples. The experiment results show that compared with the traditional extrusion process, the final forming load of billet by the double concave preforming reduces more than 39%, the equivalent strain difference significantly reduces, the deformation is more uniform, and the impact toughness, tensile strength and elongation improve respectively. Thus, the rationality of the optimized design scheme is verified by the forming test, and the research results provide a theoretical reference for the preforming optimization design of high-strength aluminum alloy special-shaped complex components.

基金项目：

山西省自然科学基金资助项目（201801D121106）

李旭斌（1979-），男，博士，副教授 E-mail：lixu@nuc.edu.cn 通讯作者：吴昂（1994-），男，硕士研究生 E-mail：wuang1040@163.com

参考文献：

［1］苑世剑. 新世纪中国塑性加工行业的发展与展望
［J］. 锻压技术,2018,43(7)：18-22,76.

Yuan S J. Development and perspectives on plastic forming industry of China in the new century
［J］. Forging & Stamping Technology,2018,43(7)：18-22,76.

［2］Hang Y, Ma X, Feng J, et al. Preform optimal design of H-shaped forging based on bi-directional evolutionary structural optimization
［J］. The International Journal of Advanced Manufacturing Technology, 2018，101(1-4):1-8.

［3］熊艳才. 航空复杂构件精确成形技术基础研究
［J］.航空制造技术,2010，(2):54-57.

Xiong Y C. Basic research on precise forming technology of aviation complex components
［J］. Aeronautical Manufacturing Technology, 2010，(2):54-57.

［4］Lee S R, Lee Y K, Park C H, et al. A new method of preform design in hot forging by using electric field theory
［J］. International Journal of Mechanical Sciences, 2002, 44(4):773-792.

［5］肖红,戴甲洪,周峻峰，等. 基于静电场的筋板状铝合金锻件预成形设计
［J］. 锻压技术, 2018, 43(1):20-25.

Xiao H，Dai J H，Zhou J F，et al. Design of preforming for rib-web aluminum alloy forgings based on electrostatic field
［J］. Forging & Stamping Technology, 2018, 43(1):20-25.

［6］邱磊，蔡靖凯，孙敏，等. 航空发动机铝合金筒体关键件锻造成形工艺
［J］. 锻压技术, 2018, 43(4): 16-21.

Qiu L，Cai J K，Sun M, et al. Forging process of key parts in aluminum alloy cylinder for aero-engine
［J］. Forging & Stamping Technology, 2018, 43(4): 16-21.

［7］陈邦华. 基于电场法的锻件预成形设计和研究
［D］. 重庆: 重庆大学,2014.

Chen B H. Study on Preform Design in Forging Process Base on Electric Field
［D］. Chongqing: Chongqing University, 2014.

［8］Ko D C, Kim D H, Kim B M . Application of artificial neural network and Taguchi method to preform design in metal forming considering workability
［J］. International Journal of Machine Tools and Manufacture, 1999, 39(5):771-785.

［9］李旭斌，安自朝，张治民, 等. 高强铝合金复杂筋板构件分流开放加载
［J］. 塑性工程学报, 2015, 22(4):26-29.

Li X B，An Z C，Zhang Z M, et al. Study on split-flow open loading of aldural complex rib-web component
［J］. Journal of Plastic Engineering, 2015, 22(4):26-29.

［10］贾杨. 体积分配不均匀铝合金框体挤压成形工艺模拟研究
［D］.太原：中北大学, 2014.

Jia Y. Volume Distribution Non-uniform Aluminum Alloy Frame Extrusion Forming Process Simulation
［D］. Taiyuan: North University of China, 2014.

［11］贾泽伟. 铝合金异形复杂截面构件成形研究
［D］.太原：中北大学,2015.

Jia Z W. The Research on the Forming Process of Aluminum Alloy Components with Complex Cross Section
［D］. Taiyuan: North University of China, 2015.

［12］肖军. 材料成形过程的类等势场法模拟与预成形设计
［D］.西安：西北工业大学, 2006.

Xiao J. Equipotential Field Method Simulation and Pre-forming Design for Material Forming Process
［D］. Xi′an: Northwestern Polytechnical University, 2006.

［13］马俊华. 金属夏比试样V型缺口尺寸的简易测量法
［J］.理化检验：物理分册,1997, (9):44.

Ma J H. Simple measurement method for V-notch size of metal Charpy specimens
［J］. Physical Testing and Chemical Analysis Part A:Physical Testing，1997, (9):44.

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