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
汽车空调管护套扣压裂纹缺陷分析
英文标题:Withhold crack analysis on sheath of automotive air conditioning tube
作者:李小汝 黄娟 覃才友 
单位:四川工程职业技术学院 
关键词:汽车空调管 护套 扣压工艺 裂纹 
分类号:TG386
出版年,卷(期):页码:2014,39(12):27-30
摘要:

针对汽车空调管路在扣压时出现的护套破裂问题,建立扣压成形的有限元模型并进行数值模拟,模拟分析表明,护套扣压过程中护套口部的不均匀扩张导致了该部分金属的最大主应力超过护套材料Al3003-H12抗拉强度130 MPa,从而在护套口部产生拉裂;通过改变护套形状用以降低其经扣压成形后口部的拉应力值,改变护套形状后扣压时的护套口部金属最大主应力降至100 MPa左右,降幅约为23%。工艺试验结果表明,改进护套形状后可以有效避免护套扣压时的拉裂缺陷,大大降低废品率。

For the problem that the sheath will be cracked when the automotive air conditioning tube withholds, the FEM model of withhold forming was built and numerical simulation was carried out. Simulation analysis shows that nonuniform expansion of the sheath mouth in the process of sheath withholding leads to the maximum principal stress exceeding the material Al3003-H12 tensile strength 130 MPa, so the crack is generated in the sheath mouth. The tension stress of sheath mouth after withhold forming could be reduced by changing the shape of sheath. The maximum principal stress on the sheath mouth during withhold forming dropped to about 100MPa and the decreasing range was around 23%. Processing test results show that the improved sheath can avoid the defects of the sheath crack and reduce the waste rate considerably.

基金项目:
德阳市科技支撑计划资助项目(2012ZZ040-9)
作者简介:
李小汝(1981-),女,硕士,讲师
参考文献:

[1]温华典,肖小亭,章凯,等. 空调联箱多通管路内高压成形金属流动规律研究[J].锻压技术,2011,36(3):42-45.

Wen  H D, Xiao X T, Zhang K, et al. Research on metal flow pattern of multi-way tube hydro forming for air hundling unit[J].Forging & Stamping Technology,2011,36(3):42-45.

[2]刘明涛,杨务滋,周立强, 等.高压胶管总成扣压量控制方法研究[J].中南林业科技大学学报,2011,31(2):135-138.

Liu M T, Yang W Z, Zhou L Q, et al. Research on control method about the amount of high-pressure hose withhold[J]. Journal of Central South University of Forestry & Technology,2011,31(2):135-138.

[3]温华平,冯国勋. 液压胶管总成可靠性试验分析[J].工程机械,1990,21(12):41-44.

Wen H P, Feng G X. Reliability test and analysis for hydraulic rubber hose assembly[J]. Construction Machinery and Equipment, 1990,21(12):41-44.

[4]岳建平,杨菲. 浅析HFC-134a汽车空调管路扣压工艺[J].汽车实用技术,2013,3(3):46-48.

Yue J P, Yang F. Analysis of HFC-134a automotive air conditioning pipe withhold process[J]. Automobile Applied Technology, 2013,3(3):46-48.

[5]杨务滋,杨国庆,杨超. 胶管接头扣压成型的力学分析[J].化工设备与管道,2004,41(2):60-62.

Yang W Z, Yang G Q, Yang C. Mechanics analysis on swaging process of hose assembly[J]. Process Equipment & Piping, 2004,41(2):60-62.

[6]GB/T 3190—2008,变形铝及铝合金化学成分[S].

GB/T 3190—2008,Wrought aluminum and aluminum alloy — chemical composition[S].

[7]冯文杰,祝宇,陈莹莹,等. 摩托车齿形链链轮成形数值分析与工艺改进[J].锻压技术,2012,37(4):46-50.

Feng W J, Zhu Y, Chen Y Y, et al. Numerical analysis and technology improvement for motor silent chain sprocket[J]. Forging & Stamping Technology,2012,37(4):46-50.

[8]贾建波,徐岩. 汽车半轴管挤压成形缺陷分析与工艺改进[J].锻压技术,2011,36(1):26-29.

Jia J B, Xu Y. Research on extrusion defects of auto half shaft bushing and technology improvement[J]. Forging & Stamping Technology,2011,36(1):26-29.

[9]孙建,张水忠. 基于Deform-3D的离合块冷挤压工艺优化[J].锻压技术,2009,34(5):12-15.

Sun J, Zhang S Z. Process optimization of clutch block cold extrusion based on Deform-3D[J]. Forging & Stamping Technology,2009,34(5):12-15.

[10]冯文杰,胡灵珊,陈莹莹. 花键轴冷挤压成形镦粗失稳分析[J].重庆工学院学报,2009,23(3):39-42.

Feng W J, Hu L S, Chen Y Y. Analysis on upsetting collapse in spline shaft cold extrusion forming[J]. Journal of Chongqing Institute of Technology,2009,23(3):39-42.

服务与反馈:
本网站尚未开通全文下载服务】【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