摘要
利用研制的集增压器、冲液器、滑动胀形模具于一体的超高压液压胀形装置,在普通液压机上针对载重0.75t微型卡车后桥壳样件,进行了不同加载路径下的胀形试验,成功试制出桥壳样件。揭示了不同加载条件对管坯胀形的影响,找到了较好的加载路径;剖切胀形后试件,测量主要几何参数及管坯壁厚的变化规律;揭示出极限胀形系数与管坯轴向应变及材料延伸率之间的定量关系。试验研究为生产实践提供参考,为液压胀形桥壳的性能分析提供依据。
In the common press, hydro-forming tests of the designed sample of 0.75t automobile axle housings is done under different loading path, with the utlization of the ultrahigh pressure hydro-forming device integrating the supercharger and the filler within the sliding bulging die. The sample is successfully trial-produced, the influnce of loadsteps on tubular deformation is revealed, and the better load condition found. With the specimen cut open, the main geometric parameters measured, the wall- thickness distribution is given, and the function of the tubular axial strain and the percentage elongation of material influencing on the bulging limit coefficient is revealed. The research offeres reference to production, providing a basis to the property analysis of sample.
出处
《塑性工程学报》
CAS
CSCD
北大核心
2008年第2期90-95,共6页
Journal of Plasticity Engineering
基金
河北省自然科学基金资助项目(503299)。
关键词
汽车桥壳
液压胀形
胀形试验
加载路径
极限胀形系数
automobile axle housings
hydro-forming
bulging test
loading path
bulging limit coefficient
