网站首页期刊简介编委会过刊目录投稿指南广告合作征订与发行联系我们English
QP980钢门槛隔板零件翻边成形边部开裂研究
英文标题:Research on edge cracking in flanging for threshold partition of steel QP980
作者:袁志鹏 刁法玺 陈新平 
单位:宝山钢铁股份有限公司研究院 汽车用钢开发与应用技术国家重点实验室(宝钢) 上海汽车集团股份有限公司乘用车公司 
关键词:QP980钢 门槛隔板 翻边成形 边部开裂 起皱 
分类号:TP386
出版年,卷(期):页码:2018,43(1):53-59
摘要:

翻边成形边部开裂包含减薄开裂和起皱开裂两种类型。针对某车型QP980钢门槛隔板零件存在的翻边成形边部开裂问题,对开裂零件样板进行基本力学性能检测、零件开裂部位断面研究;基于AutoForm软件对原工艺方案进行了全流程仿真分析,提出坯料优化方案,并从成形、主次应变状态、减薄等方面对新方案进行了评估;此外,对开裂零件的模具状态和修边质量进行现场优化,并对优化后的坯料方案进行现场零件试冲。结果表明:坯料优化后,起皱开裂区域增厚由18.6%降低至10.4%,起皱现象明显改善;优化模具表面状态能有效改善成形后零件表面拉毛情况,减薄开裂区域的开裂现象消除;采用激光切割获得优化后坯料,成形后零件无肉眼可见的起皱及开裂,此外零件边部质量改善明显。通过研究,总结出影响QP980钢门槛隔板零件翻边成形边部开裂问题的主要因素,便于指导后续零件设计及量产稳定。

The edge cracking in flanging consists of thinning cracking and wrinkling cracking.For the problems of edge cracking in the flanging process of threshold partition part for steel QP980,the basic mechanical properties of sample sheet for cracked part was tested,and the cracking section of part was researched. Then, the whole process simulation of original scheme was performed by software AutoForm, and an optimum scheme of blank was proposed. Furthermore, the new scheme was evaluated on formability,major and minor stain and thinning. In addition, the surface state of die and the trimming quality of cracked part were optimized, and the trial part was punched by the optimum scheme. The results show that after the optimization of blank, the thickness of wrinkling cracking area decreases from 18.6% to 10.4%, and the wrinkling phenomenon is improved. The optimization of die surface state can effectively improve the surface galling of forming part,and the cracking in thinning area is eliminated. The optimized blank was obtained by laser cutting. The wrinkles or cracks cannot be seen in the forming part, and the edge quality of part is improved obviously.Finally, the main factors affecting the edge cracking of flanging for threshold partition part of steel QP980 were summed up, which could guide the design of follow-up parts and ensure the stability of mass production.

基金项目:
作者简介:
作者简介:袁志鹏(1987-),男,硕士,工程师,E-mail:yuanzhipeng@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]. GuangzhouSouth China University of Technology2014.


[2]赵宝岩,张晓胜,张铁顺,等,轧制差厚板在汽车冲压件上的应用 [J].锻压技术,201742(3)44-47.


Zhao B Y, Zhang X S, Zhang T X, et al. Application of tailor rolling blank in automobile stamping parts [J]. Forging & Stamping Technology, 201742(3)44-47.


[3]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.


[4]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, 412):16-18.


Zheng D B, Liu Y F, Wu C M, et al. Research on stamping stability of the third generation high strength steel QP980 [J]. Die & Mould Industry, 2015, 412):16-18.


[5]温媛媛,林建平,庞政,等,Q & P钢板滞弹性变形行为研究[J].塑性工程学报,201623(6)131-136.


Wen Y Y, Lin J P, Pang Z, et al. Anelastic behavior of Q & P steel [J]. Journal of Plasticity Engineering, 201623(6)131-136.


[6]连昌伟,陈新平,俞宁峰. 高伸长率QP钢在高应变速率下的力学特性[J].锻压技术,201742(7)163-168.


Lian C W, Chen X P, Yu N F. Mechanical properties on high elongation steel QP under high strain rate [J]. Forging & Stamping Technology, 201742(7)163-168.


[7]胡星, 杨海军, 但文蛟, . 淬火分离钢板成形的有限元仿真研究[J]. 热加工工艺, 2016, 4512):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, 2016,4512):156-160.


[8]刁可山,蒋浩民,陈新平. 基于成形特性的宝钢QP980试验研究及典型应用[J]. 锻压技术,201237(6)113-115.


Diao K S, Jiang H M, Chen X P. Research and typical application of QP980 steel produced by BaoSteel based on formability [J]. Forging & Stamping Technology, 201237(6)113-115.


[9]Yu X Y, Chen J, Chen J S. Interaction effect of cracks and anisotropic influence on degradation of edge stretchability in hole-expansion of advanced high strength steel[J]. International Journal of Mechanical Sciences, 2016, 105: 348-359.

服务与反馈:
文章下载】【加入收藏
《锻压技术》编辑部版权所有

中国机械工业联合会主管  中国机械总院集团北京机电研究所有限公司 中国机械工程学会主办
联系地址:北京市海淀区学清路18号 邮编:100083
电话:+86-010-82415085 传真:+86-010-62920652
E-mail: fst@263.net(稿件) dyjsjournal@163.com(广告)
京ICP备07007000号-9