锻压技术

QP980钢后纵梁冲压工艺优化

英文标题：Optimization of stamping process for QP980 steel rear side member

作者：赵广涛袁志鹏吴彦骏

关键词：QP980钢后纵梁冲压翻边成形边部开裂

分类号：TP386

出版年,卷(期):页码：2020,45(4):62-69

摘要：

针对某车型QP980钢后纵梁零件翻边成形时存在的边部开裂问题，基于AutoForm软件对原工艺方案进行了全工序仿真，并分析开裂原因。提出了解决开裂问题的5项工艺优化方案，并利用AutoForm软件对优化方案进行仿真评估。此外，对增加切角模、改变毛刺朝向、缓解开裂的原理进行了分析。结果表明：零件因边部减薄严重而导致开裂，常规预成形方案对缓解超高强钢边部开裂问题效果有限。解决此类问题的有效方案包含2类：优化产品边界、减少边部区域材料减薄率；改变该区域应变状态，将边部应变状态改为面内应变状态，提高材料抗减薄能力。此外，改变毛刺朝向能在一定程度上缓解零件边部开裂问题。通过对该问题的研究，总结出影响该零件翻边成形时边部开裂问题的主要因素及解决方案，便于指导后续的零件设计及稳定量产。

For the problem of edge cracking in the flanging process of QP980 steel rear side member part in a automobile，a whole process simulation of original scheme was performed by AutoForm software to analyze the cracking reason. Then，Five process optimization schemes were put forward to solve the cracking problem，and the AutoForm software was used to simulate and evaluate the optimization schemes. Besides，The principle analysis of adding an angle cutting die, changing the burr direction,and alleviating the cracking problem was carried out. The results show that severe edge thinning leads to cracking of parts，and conventional pre-forming scheme has limited effect on relieving the edge cracking of ultra-high strength steel.Effective solutions to such problems include two types. First，optimizing the product boundary and reducing the material thinning rate in edge area. Second，changing the strain state of the edge to the in-plane strain state and improving the anti-thinning ability of material. Besides，Changing the direction of burrs can alleviate the problem of edge cracking for parts. Through the study of this problem，the main factors and the solutions of edge cracking in flanging of parts are summed up，it is used to guide the design of subsequent parts and stable production.

基金项目：

国家重点研发计划项目（2017YFB0304403）

赵广涛（1986-），男，硕士，工程师 E-mail：zhaoguangtao@baosteel.com

参考文献：

[1]俞雁.乘用车车门总成材料轻量化技术研究[D].广州：华南理工大学，2014.

Yu Y. A Study on the Weight-reduction of Automobile Door Assembly [D].Guangzhou：South China University of Technology，2014.

[2]张燕瑰，邓劲松，魏宪波，等.高强度钢性能及其在车身中的应用[J].精密成形工程，2013，5(4): 64-68.

Zhang Y G，Deng J S，Wei X B, et al. A study on performance of high strength steel and application in bodywork[J].Journal of Netshape Forming Engineering，2013，5(4): 64-68.

[3]程国良.汽车车身冲压模具开发同步工程的关键技术研究及应用[D]. 长沙：湖南大学，2008.

Cheng G L. The Key Technologies and Application of Simultaneous Engineering in the Development of Automobile Body Stamping Dies[D].Changsha：Hunan University of Technology，2008.

[4]罗仁平，王燕，赵金龙.冲压同步工程在汽车产品设计开发中的应用[J].汽车技术，2014，7：5-7.

Luo R P, Wang Y,Zhao J L. Application of stamping simultaneous engineering in auto product research and development [J]. Automobile Technology, 2014，7：5-7.

[5]郑德兵，柳一凡，吴纯明，等，第3代高强钢QP980冲压稳定性研究[J]. 模具工业,2015：41（2）：16-18.

Zheng D B, Liu Y F, Wu C M, et al. Research on stamping stability of the third generation high [J]. Die & Mould Industry, 2015,41（2）：16-18.

[6]胡星, 杨海军, 但文蛟, 等，淬火分离钢板成形的有限元仿真研究[J].热加工工艺,2016，45（12）：156-160.

Hu X, Yang H J, Dan W J, et al. Finite element simulation of quenching and partitioning steel sheets forming [J]. Hot Working Technology, 2016, 45（12）：156-160.

[7]叶又，邓璐璐，连昌伟，等，基于帽形冲击实验的Q＆P钢冲击性能研究[J]. 锻压技术，2018，43（6）：172-179.

Ye Y，Deng L L，Lian C W，et al. Study on impact property of Q＆P steel based on cap-shaped impact test [J].Forging & Stamping Technology,2018，43(6)：172-179.

[8]陆演. DP590先进高强度钢板成形性能及其在汽车B柱中的应用研究[D].重庆：重庆大学，2011.

Lu Y. Research on the Formobility of DP590 Advanced High Strength Sheet and Its Application to Auto B-Pillar Part [D].Chongqing：Chongqing University，2011.

[9]张勇，范轶，薛洋. 基于Dynaform 和正交试验的轿车加强梁冲压工艺参数优化[J]. 锻压技术，2019，44(2)：37-41.

Zhang Y，Fan Y，Xue Y. Optimization on stamping process parameters of car reinforced beam based on Dynaform and orthogonal[J].Forging & Stamping Technology,2019, 44(2):37-41.

[10]王力，马天流，邰伟彬. 侧围加强板生产开裂控制方法研究[J].汽车工业研究，2016，(11)：57-61.

Wang L, Ma T L,Tai W B. Study on crack control method of side segment reinforcement plate production[J]. Auto Industry Research，2016，(11)：57-61.

[11]谢文才,王石,邰伟彬,等.基于网格分析法的典型汽车冲压件成形缺陷分析[J].汽车工艺与材料，2013，（6）：8-13.

Xie W C, Wang S, Tai W B, et al. Analysis of the forming defect of typical automobile stamping parts based on grid analysis[J].Automobile Technology and Material, 2013，（6）：8-13.

[12]申伟，邓海富，尹诗崭. 浅析冲压毛刺问题产生原因及控制方案[J]. 模具制造，2016，(9)：16-19.

Shen W，Deng H F，Yin S Z. Analysis on the cause and control scheme of stamping burr problem[J]. Die & Mould Manufacture，2016，(9)：16-19.

服务与反馈：

【文章下载】【加入收藏】