锻压技术

关键参数对薄壁筒形件充液成形的影响规律

英文标题：Influence of key process parameters on thin-wall tube workpiece in hydroforming process

作者：郎利辉张泉达孙志莹王耀

单位：北京航空航天大学

分类号：TG386.3

出版年,卷(期):页码：2017,42(12):51-60

摘要：

为了研究初始反胀高度(IRBH)、反胀压力(IRBP)和液室压力加载路径3个工艺参数对板料充液成形的影响规律，以不锈钢321材料为研究对象，进行板材充液成形工艺过程的分析。首先，利用数值模拟的方法，在有初始反胀(IRB)的充液成形基础上，研究了初始反胀高度与初始反胀压力的组合形式以及液室压力加载路径对制件成形的影响规律，然后分别研究了有无初始反胀的充液成形过程。最后，通过实验的方法进行验证。结果表明：当初始反胀高度为3.75 mm、初始反胀压力为2 MPa时，充液结束时板料的最大减薄率为4.803%，在所有结果中最小；无初始反胀时，零件壁厚最大减薄率为5%；当在充液拉深后期继续加大液室压力时，板料底部发生波动，出现二次变形,与此同时，板料最大减薄率增大。从而验证了合适的初始反胀高度和反胀压力可以减小制件壁厚的最大减薄率，液室压力加载路径不同，零件的壁厚分布也不同。

In order to research the influence of initial reverse bulging height(IRBH), reverse bulging pressure(IRBP) and cavity pressure loading paths on the hydroforming process of sheet, for the stainless steel 321, an analysis of the hydroforming process of sheet metal was carried out. Firstly, the influences of the IRBH,IRBP and the cavity pressure loading paths on the forming of part were studied by the method of numerical simulation and based on the hydroforming with initial reverse bulging(IRB). Secondly, the hydroforming processes with and without IRB were discussed. At last, they were confirmed by the experiment. The results show that when the IRBH is 3.75 mm and the IRBP is 2 MPa, the maximum thinning rate of sheet is 4.803% in the end of hydroforming process which is the smallest value in all the results. While the hydroforming process is without IRB, the maximum thinning rate is 5%. However, when the cavity pressure increases continual during the later stage of hydro-mechanical deep drawing, the bottom of sheet metal is fluctuating and there is a double-dip deformation on the sheet metal. At the same time, the maximum thinning rate of sheet increases. Thus, it is verified that the maximum thinning rate of wall thickness decreases effectively adpting appropriate IRBH and IRBP, but when the cavity pressure loading path is different, the distribution of wall thickness is different too.

基金项目：

国家科技重大专项：“高档数控机床与基础制造装备”（2014ZX04002-071）

作者简介：郎利辉（1970-），男，博士，教授 E-mail：Lang@buaa.edu.cn 通讯作者：张泉达（1986-），男，博士研究生 E-mail:zhangquandadgu@163.com

参考文献：

［1］李涛，郎利辉，安冬洋，等.复杂薄壁零件板多级充液成形及过程数值模拟[J].北京航空航天大学学报, 2007, 33(7):830-833.

Li T, Lang L H, An D Y, et al. Multi sheet hydroforming of complicated thin wall part and numerical simulation [J]. Journal of Beijing University of Aeronautics and Astronautics, 2007, 33(7):831-833.

［2］Siegert K, Hussermann M, Lsch B, et al. Recent developments in hydroforming technology[J]. Journal of Materials Processing Tech., 2000, 98(2):251-258.

［3］徐永超,陈宇,苑世剑.板材充液拉深:汽车等行业的重要新兴产业[J].锻造与冲压, 2006, (6):57-59.

Xu Y C, Chen Y, Yuan S J. Hydraulic deep drawing of Sheet metal: an important new industry in automobile industry [J]. Forging and Metalforming, 2006, (6):57-59.

［4］郎利辉,张文尚,刘康宁,等. 液室压力对异形长法兰盒形件充液成形过程的影响[J].锻压技术, 2016, 41(9):41-45.

Lang L H, Zhang W S, Liu K N, et al. Influence of cavity pressure on box-shaped part with special-shaped long flanges in hydroforming process [J]. Forging & Stamping Technology, 2016, 41(9):41-45.

［5］Zhang S H, Lang L H, Kang D C, et al. Hydromechanical deep-drawing of aluminum parabolic workpieces-experiments and numerical simulation[J]. International Journal of Machine Tools & Manufacture, 2000, 40(10):1479-1492.

［6］Hein P, Vollertsen F. Hydroforming of sheet metal pairs[J]. Journal of Materials Processing Technology, 1999, 87(1–3):154-164.

［7］蔡高参,周晓军,陆建江,等.板材充液热成形工艺成形极限预测研究[J].锻压技术, 2016, 41(4):36-40.

Cai G C, Zhou X J, Lu J J, et al. Prediction on forming limit in hot/warm sheet hydroforming process[J]. Forging & Stamping Technology, 2016, 41(4):36-40.

［8］郎利辉,王永铭,李惠丽.复杂薄壁微小截面环形件的充液成形技术研究[J].锻压技术, 2011, 36(2):34-37.

Lang L H, Wang Y M, Li H L. Research on multi-step hydroforming of complicated thin wall circular part with small section [J]. Forging & Stamping Technology, 2011, 36(2):34-37.

［9］Lang L H, Zhang S T, Li T, et al. Investigation into the forming of complicated parts with poor formability materials in cold/warm sheet hydroforming [A]. Tube Hydroforming Techonolgy [C]. Minemachi, 2007.

［10］Lang L H, Danckert J, Nielsen K B. Study on hydromechanical deep drawing with uniform pressure onto the blank[J]. International Journal of Machine Tools & Manufacture, 2004, 44(5):495-502.

［11］李群一,聂绍珉,唐景林,等.矩形抛物面反光罩充液成形的研究[J].锻压技术, 2005, 33(4): 12-14.

Li Q Y, Nie S M, Tang J L, et al. Research on hydroforming of square parabolic reflector [J]. Forging & Stamping Technology, 2005, 33(4): 12-14.

［12］刘合军,郎利辉.高强度铝合金板材的温热介质充液成形研究[J].塑性工程学报, 2009, 16(1): 32-36.

Liu H J, Lang L H. Investigation on warm/hot hydro-forming of high strength aluminum alloy sheet [J]. Journal of Plasticity Engineering, 2009, 16(1): 32-36.

［13］杨踊,孙淑锋,刘慧茹.航空发动机复杂型面罩子钣充液成形技术[J].航空制造技术, 2010, 1(1): 91-99.

Yang Y, Sun S F, Liu H R. Hydroforming technology of complex profile cover sheet of aeroengine [J]. Aeronautical Manufacturing Technology, 2010, 1(1): 91-99.

［14］项辉宇,冷崇杰,张媛.覆盖件成形缺陷的数值仿真实例分析[J].计算机仿真, 2009, 26(12): 226-229.

Xiang H Y, Leng C J, Zhang Y. Case analysis of numerical simulation for automobile panel forming defects [J]. Computer Simulation, 2009, 26(12): 226-229.

［15］徐俊瑞.工艺参数对复杂曲面零件充液拉深成形的影响[D].哈尔滨：哈尔滨工业大学, 2009.

Xu J R. Influence of Technological Parameters on Hydroforming Process of Complex Curved Surface Parts [D]. Harbin: Harbin Institute of Technology, 2009.

［16］郎利辉,许诺,王永铭.321不锈钢V形件充液成形失稳控制研究[J].锻压技术, 2012，37（5）：51-55.

Lang L H, Xu N, Wang Y M. Research on failure control of hydroforming for 321 stainless steel V-shaped components [J]. Forging & Stamping Technology , 2012，37（5）：51-55.

［17］郎利辉.板材充液先进成形技术[M].北京:国防工业出版社, 2014.

Lang L H. Innovative Sheet Hydroforming and Warm/Hot Hydroforming [D]. Beijing: National Defense Industry Press, 2014.

［18］孔德帅,郎利辉,孙志莹，等.铝合金薄壁波纹板充液成形工艺研究[J].精密成形工程, 2015, 7(3):62-66.

Kong D S, Lang L H, Sun Z Y, et al. Hydroforming process of aluminum alloy thin-wall corrugated sheet [J]. Journal of Netshape Forming Engineering, 2015, 7(3):62-66.

［19］孙志莹,郎利辉,孔德帅.铝合金马鞍形件充液成形工艺模拟分析[J].精密成形工程, 2015, 7(1):46-50.

Sun Z Y, Lang L H, Kong D S. Simulation analysis of hydroforming process for aluminum alloy saddle parts [J]. Journal of Netshape Forming Engineering, 2015, 7(1):46-50.

［20］Mcdowell D L. Modelling and experiments in plasticity[J]. International Journal of Solids and Structures, 2000, 37(1-2):293-309.

［21］肖景容，姜奎华.冲压工艺学[M].北京:机械工业出版社, 2010.

Xiao J R, Jiang K H. Stamping Technology [M]. Beijing: China Machine Press, 2010.

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