锻压技术

管坯预弯轴线设计对DP800管件低压液压成形起皱的影响

英文标题：Influence of pre-bending axis design of tube blank on wrinkling in low-pressure hydroforming for DP800 tube

作者：陈智勇

分类号：TG394

出版年,卷(期):页码：2021,46(4):75-80

摘要：

以大径厚比液压成形翼子板支撑构件为研究对象，结合模拟仿真分析，在液压成形工艺参数一定的情况下，研究了不同管坯预弯轴线与零件中心线的偏差值对弯曲起皱的影响，并通过样件调试验证了模拟仿真结果的正确性。研究结果表明：DP800超高强钢车身件在低压液压成形工艺过程中，弯曲内侧轴线压应力与管坯预弯轴线和零件中心线的偏差值呈正相关，偏差值越大，压应力越大；当轴向压应力与材料屈服应力的比值达到1.3时，易导致弯曲内侧失稳起皱；同时，预弯轴线与零件中心线的偏差值越大时，起皱凹陷深度及尺寸轮廓度偏差值也越大。

For the fender support component with large diameter-thickness ratio produced by hydroforming, combined with the simulation analysis, under the condition of certain hydroforming process parameters, the influences of different deviation values between pre-bending axis of tube blank and central line of part on the wrinkling generated during the bending process were studied, and the simulation results were verified by the sample tryout. The results show that during the low-pressure hydroforming process of body parts for DP800 ultra-high strength steel, on the inner side of bending tube, the compressive stress is positively correlated with the deviation between pre-bending axis of tube blank and center line of part. The greater the deviation is, the greater the compressive stress is. When the ratio of axial compressive stress to yield stress of material reaches 1.3, it is easy to cause instability to wrinkle on the inner side of bending tube. At the same time, the greater the deviation between pre-bending axis and central line of part is, the greater the deviation of wrinkle depression depth and size profile is.

基金项目：

陈智勇（1984-），男，硕士，工程师 E-mail：chenzhiyong@baosteel.com

参考文献：

［1］何鹏申，陈玉杰，郜昊强，等. 管材液压成形在汽车节能减排中的开发应用
［J］. 锻压装备与制造技术，2019，54(1)：84-88.

He P S, Chen Y J, Gao H Q，et al. Development and application of pipe hydroforming in energy saving and emission reduction of automobiles
［J］. China Metalforming Equipment & Manufacturing Technology, 2019, 54(1): 84-88.

［2］蒋浩民，陈新平，范频，等. 管件液压成形技术及其在车身轻量化中的应用
［A］. 2007年中国钢铁年会
［C］.成都：中国金属学会，2007.

Jiang H M, Chen X P, Fan P, et al. Tube hydroforming technology and its application in lightweight of auto body
［A］. China Iron and Steel Annual Meeting, Chengdu in 2007
［C］.Chengdu: The Chinese Society for Metals, 2007.

［3］蒋浩民. 宝钢汽车零部件产业发展概述
［A］. 2014年全国钢材深加工研讨会
［C］. 天津：中国金属学会，2014.

Jiang H M. Overview of the automobile parts industry development in Baosteel
［A］. National Symposium on Deep Processing of Steel Products, Tianjin in 2014
［C］. Tianjin: The Chinese Society for Metals, 2014.

［4］Hartl C. Research and advances in fundamentals and industrial applications of hydroforming
［J］. Journal of Materials Processing Technology, 2005, 167(2/3): 383-392.

［5］Kenichi Manabe, Masaaki Amino. Effects of process parameters and material properties on deformation process in tube hydro-forming
［J］. Journal of Materials Processing Technology, 2002, 123: 285-291.

［6］Dohmann F, Hartl C H. Tube hydroforming research and practical application
［J］. Journal of Materials Processing Technology, 1997, 71: 174-186.

［7］王娜，李稚凡，陈新平. 超高强度钢DP1000液压成形A柱的关键技术
［J］. 精密成形工程，2017，9(6)：6-10.

Wang N, Li Z F, Chen X P. Key technology of AHSS DP1000 hydroforming A pillar
［J］. Journal of Netshape Forming Engineering, 2017, 9(6): 6-10.

［8］韩聪，贺久强，苑世剑. 780MPa超高强钢扭力梁内高压成形研究
［J］. 精密成形工程，2016，8(5)：53-59.

Han C, Zhang J Q, Yuan S J. Hydroforming of an automotive torsion beam with 780 MPa advanced high strength steel
［J］. Journal of Netshape Forming Engineering, 2016, 8(5): 53-59.

［9］崔振楠，林利，朱国明，等. DP590/DP780高强钢管液压成形的性能
［J］. 工程科学学报，2020，42（2）：233-241.

Cui Z N, Lin L, Zhu G M，et al. Hydroforming performance of DP590/DP780 high-strength steel tube
［J］. Chinese Journal of Engineering, 2020, 42（2）: 233-241.

［10］陈新平，胡晓，宋晨，等. 超高强钢QP980液压成形B柱仿真及试验研究
［J］. 精密成形工程，2016，8(5)：60-64.

Chen X P, Hu X, Song C, et al. Simulation and experiment analysis of AHSS QP980 hydroforming B pillar
［J］. Journal of Netshape Forming Engineering，2016, 8(5): 60-64.

［11］贺佳，阎启. 液压胀形用激光焊管产品的质量控制
［J］. 物理测试，2016，34(4)：25-28.

He J, Yan Q. Quality control of laser welded tube products for hydroforming
［J］. Physics Examination and Testing, 2016, 34(4): 25-28.

［12］孙克锐，杨连发. 焊缝管液压成形技术及热影响区对成形的影响
［J］. 桂林电子科技大学学报，2006，26(5)：380-384.

Sun K R, Yang L F. Tailor-welded tube in hydroforming and influence of the heat affected zone on bulge forming
［J］. Journal of Guilin University of Electronic Technology, 2006, 26(5): 380-384.

［13］宋鹏，王小松，徐永超，等. 内压对薄壁铝合金管材充液压弯过程的影响
［J］. 中国有色金属学报，2011，21(2)：311-317.

Song P, Wang X S, Xu Y C, et al. Influence of internal pressure on hydro-bending of thin-walled aluminum alloy tube
［J］. The Chinese Journal of Nonferrous Metals, 2011, 21(2): 311-317.

［14］唐琼，郑再象. 摩擦对管件液压成形结果影响的数值模拟
［J］. 机械设计与制造，2009，（2）：124-126.

Tang Q, Zheng Z X. The numerical simulation of the friction on hydroforming of the pipe fitting
［J］. Machinery Design & Manufacture, 2009,（2）: 124-126.

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