锻压技术

A柱加强板热成形拐角开裂起皱优化

英文标题：Optimization on wrinkle and crack at corner of A-pillar reinforcement panel in thermoforming

作者：尤彬波林楷谢育涛田永生

分类号：TG386.1

出版年,卷(期):页码：2021,46(3):105-110

摘要：

对汽车超高强度硼钢A柱加强板拐角开裂、起皱问题的优化方法进行了研究。利用CAE仿真软件AutoForm创建分析模型，进行热成形冲压仿真模拟分析，分析结果表明，该A柱加强板的拐角处易出现开裂和起皱现象。重点对起皱、开裂问题的原因进行了分析，认为产品结构不合理和工艺补充不优是造成拐角起皱、开裂的主要原因。从产品结构、工艺补充、坯料尺寸方面，经过多轮优化分析，有效地解决了A柱加强板拐角处的成形性问题。依据最优方案进行热成形工艺模具结构设计，经过铸造、机加、研配制造出满足设计要求的模具结构，并进行上机现场调试，调试结果与前期CAE分析结果一致。研究结果表明，前期CAE优化分析结果可以有效地指导现场生产调试，解决了拐角处的成形性问题，最终调试出合格产品，减少了零件开发的成本和周期。

The optimization method of wrinkle and crack at the corner of A-pillar reinforcement panel for automobile ultra-high strength boron steel was studied. The analysis model was created by CAE simulation software AutoForm, and the simulation analysis of thermoforming process was conducted. The analysis results show that it is easy to produce crack and wrinkle at the corner of A-pillar reinforcement panel. Therefore, the reasons caused the wrinkle and crack were analyzed emphatically, and it was believed that the unreasonable product structure and poor process addendum were the main reasons for the wrinkle and crack at the corner. Furthermore, from the aspects of product structure, process addendum and blank sizes, the formability at the corner of A-pillar reinforcement panel were effectively solved by the multiple optimization analysis. According to the optimal plan, the die structure in the thermoforming process was designed and manufactured by casting, machining and polishing to satisfy the design requirement, and the on-site commissioning was conducted. The commissioning results were consistent with the previous CAE analysis results. The research results show that the previous CAE optimization analysis results can effectively guide the production and commissioning on site, the formability at the corner are solved, and the qualified product is produced finally to reduce development costs and cycles of part.

基金项目：

尤彬波（1989-），男，学士，中级工程师 E-mail：youbinbo@gacrnd.com

参考文献：

[1]陈辉，景财年.热成形技术在汽车轻量化中的应用与发展[J].金属热处理，2016,41(3):61-65.

Chen H, Jing C N. Application and development of hot forming technology for automobile lightening[J]. Heat Treatment of Metals, 2016,41(3):61-65.

[2]范子杰，桂良进，苏瑞意.汽车轻量化技术的研究与进展[J].汽车安全与节能学报，2014,5(1):1-16.

Fan Z J, Gui L J, Su R Y. Research and development of automotive lightweight technology[J]. Journal of Automotive Safety and Energy, 2014,5(1):1-16.

[3]朱超. 超高强度钢板的热冲压成形模具设计及优化[D].长春：吉林大学,2010.

Zhu C. Designing and Optimizing of Hot Stamping Tools of Ultra High Strength Steels[D]. Changchun: Jilin University, 2010.

[4]张先鸣.汽车用材料技术动向[J].现代零部件,2006，(10):68-71.

Zhang X M. Automotive material technology trends[J]. Modern Components, 2006，(10):68-71.

[5]罗魁. B柱加强板热冲压成形仿真研究[D]. 秦皇岛:燕山大学,2017.

Luo K. Simulation Study on Hot Stamping of Bpillar Reinforced Plate[D]. Qinhuangdao: Yanshan University, 2017.

[6]刘松炎.某轿车A柱加强板热冲压淬火工艺优化仿真研究[D].秦皇岛：燕山大学,2018.

Liu S Y. Optimization of Quenching Parameters for Hot Stamping of Apillar Reinforcement[D]. Qinhuangdao: Yanshan University, 2018.

[7]马宁. 高强度钢板热成形技术若干研究[D].大连：大连理工大学,2011.

Ma N. Research on Hot Forming of High Strength Steel [D]. Dalian：Dalian University of Technology, 2011.

[8]马宁,申国哲,张宗华, 等.高强度钢板热冲压材料性能研究及在车身设计中的应用[J].机械工程学报,2011,47(8):60-65.

Ma N, Shen G Z, Zhang Z H, et al. Material performance of hotforming high strength steel and its application in vehicle body[J]. Journal of Mechanical Engineering, 2011,47(8):60-65.

[9]尤彬波，林楷，谢国文，等. 机盖内板铰链侧尖点拉延开裂解决方法 [J]. 机电工程技术，2018,47(4):66-68.

You B B, Lin K, Xie G W, et al. The solution of crack at tip of hood inner panel near hinge for drawing [J]. Mechanical ＆ Electrical Engineering Technology, 2018,47 (4): 66-68.

[10]林楷，尤彬波,苏丹, 等. 汽车后门内板转角起皱成因分析及对策 [J]. 锻压技术，2017,42(6):43-50.

Lin K, You B B, Su D, et al. Reason analysis and solutions of wrinkles at corners of automobile rear door inner panel [J]. Forging ＆ Stamping Technology, 2017,42 (6): 43-50.

[11]陈亚柯.热成形工艺在汽车轻量化中的应用研究[D].长沙:湖南大学,2012.

Chen Y K. Study on the Application of Hot Stamping Process in Automobile Lightweight[D]. Changsha: Hunan University, 2012.

[12]尤彬波,杨建,谢国文, 等.前车门外板工艺分析及工序数量优化方法[J].锻压技术,2019,44(11):75-80.

You B B, Yang J, Xie G W, et al. Process analysis and optimization method of operation quantity for automobile front door outer panel [J]. Forging ＆ Stamping Technology, 2019,44(11):75-80.

服务与反馈：

【文章下载】【加入收藏】