锻压技术

基于静电场的筋板状铝合金锻件预成形设计

英文标题：Design of preforming for rib-web aluminum alloy forgings based on electrostatic field

作者：肖红戴甲洪周峻峰李杰

单位：长江师范学院重庆大学

分类号：TG316

出版年,卷(期):页码：2018,43(1):20-25

摘要：

筋板状铝合金航空锻件在成形过程中常因预制坯结构设计不合理而导致穿流。针对此问题，以某H型铝合金锻件为对象，基于相似性原理，提出一种预制坯直接设计方法——静电场法。借助ANSYS软件，首先通过静电场模拟设计7组试验预制坯；然后利用有限元软件分别对试验方案的成形过程进行数值仿真；最后通过比较各个方案的穿流倾向性、成形载荷、等效应变速率以及等效应变等指标，确定最佳预制坯方案。研究发现：采用静电场设计的预制坯成形结果均优于传统设计，电势值ζ=0.125 V的预制坯成形过程中，在满足充填性要求的同时，其穿流倾向性最小，并且成形载荷相比其他方案也最小。

Due to the partial draining caused by unreasonable structure of preformed billet in the forming process of rib-web aluminum alloy aviation forgings, taking H-shape aluminum alloy forgings as study object, a direct design method of preformed billet, namely electrostatic field method, was proposed by similarity principle. Then, seven groups of preformed billet were designed by electrostatic field simulation, and the forming processes were simulated respectively by software ANSYS. Furthermore, the most proper preformed billet scheme was achieved by comparing partial draining tendentiousness, forming load, equivalent strain rate and equivalent strain of every scheme. The results show that the preformed billet designed by the electrostatic field method is better than that designed by the traditional method. The preformed billet with the electric potential value of 0.125 V in the forming process is of the smallest partial draining tendentiousness and meets the filling requirements at the same time with the smallest forming load comparing to the other schemes.

基金项目：

作者简介：肖红（1989-），男，硕士，助教，E-mail：xh138967@163.com

参考文献：

[1]刘兵，彭超群，王日初，等.大飞机用铝合金的研究现状及展望[J].中国有色金属学报，2010，20(9):1705-1715.

Liu B, Peng C Q, Wang R C, et al. Recent development and prospects for giant plane aluminum alloys[J]. The Chinese Journal of Nonferrous Metals，2010，20(9):1705-1715.

[2]Bewlay B P, Gigliotti M F X, Hardwicke C U, et al. Net-shape manufacturing of aircraft engine disks by roll forming and hot die forging[J]. Journal of Materials Processing Technology, 2003, 135(2-3):324-329.

[3]Zhang Y Q, Shan D B, Xu F C. Flow lines control of disk structure with complex shape in isothermal precision forging[J]. Journal of Materials Processing Technology, 2009, 209 (2):745-753.

[4]Shan D B，Xu W C，Lu S Y．Research on local loading method for an aluminum-alloy hatch with cross ribs and thin webs [J]. Journal of Materials Processing Technology, 2007,187-188(3):480-485.

[5]李超,陈立宇,姜同竹,等. 基于金属流线分析的三柱槽壳温挤件工艺优化[J].锻压技术，2017,42(1):143-148.

Li C，Chen L Y，Jiang T Z, et al. Process optimization on warm extrusion housing part based on metal flow line[J]. Forging & Stamping Technology，2017,42(1):143-148.

[6]吴道祥，周杰，张建生, 等. 7050铝合金航空锻件热锻成形穿流缺陷分析[J].华中科技大学学报，2015, 43 (4):69-73.

Wu D X，Zhou J， Zhang J S，et al. Analyzing partial draining of 7050 aluminum alloy aircraft forging after hot die forming[J]. Journal of Huazhong University of Science and Technology，2015, 43 (4):69-73.

[7]张玉勋，易幼平，李云,等.铝合金机轮轮毂锻造流线仿真与实验研究[J].中南大学学报:自然科学版，2011,40(7):1967-1972.

Zhang Y X， Yi Y P，Li Y，et al. Simulation and experiment research on forging flow lines for aluminum alloy wheel-hub[J]. Journal of Central South University:Nature Science Edition，2011,40(7):1967-1972.

[8]Sedighi M, Tokmechi S．A new approach to preform design in forging process of complex parts [J]. Journal of Materials Processing Technology, 2008, 197(1-3): 314-324.

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

[10]Tao Y P, Zhou J, Cao J D, et al. Optimization design preform billet shape of 7050 aluminum alloy giant pane forgings based on electric field method and MBC toolbox[J]. The International Journal of Advanced Manufacturing Technology, 2015,81(1-4): 231-240.

[11]王晓娜，李付国，肖军，等. 基于类等势场的粉末高温合金盘件预成形设计及有限元模拟[J]. 机械工程学报，2009, 45 (5):237-243.

Wang X N， Li F G，Xiao J，et al. Preform design and finite element simulation of new-type P/M superalloy disk based on equipotential field[J]. Journal of Mechanical Engineering, 2009, 45 (5):237-243.

[12]李超，李付国，张莹，等.一种基于等势场的胀形坯料反推新方法[J]. 机械工程学报，2005,41(11):127-133.

Li C， Li F G， Zhang Y，et al. Reverse educing method of bulge-blank based on equipotential field[J]. Journal of Mechanical Engineering, 2005, 41(11):127-133.

[13]陈雨，杨文静，高兵，等. 搅拌摩擦加工5083-O铝合金的组织和性能[J]. 稀有金属，2017, 41(9): 955-963.

Chen Y， Yang W J， Gao B，et al. Friction stir processing in 5083-O aluminum alloy: Microstructures and mechanical properties[J]. Chinese Journal of Rare Metals，2017, 41(9): 955-963.

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