Hongyang LI
,
Shijian YUAN
,
Kun DAI
,
Lihui LANG
,
Xiaosong WANG
,
Zhubin HE
,
Zhongren WANG
材料科学技术（英文）
The influence of loading path on tube hydroforming process is discussed in this paper with finite-element simulation. Four different loading paths are utilized in simulating the forming process of square tubular component with hydroforming and the result of different loading path is presented. Among the result, the thickness distribution of bilinear loading path is the most uniform one. It shows that the increase of punch displacement in the stage of high pressure is beneficial to the forming of component for optimized stress condition.
关键词:
Zhenxiou HOU
,
Bugeng TENG
,
Jun LU
,
Zhubin HE
,
Zhongren WANG
材料科学技术（英文）
In this paper, a new bulge-forming technology is described to manufacture a polycarbonate semisphere shell. Some experiments have been done, and the experimental results show that this technique is feasible to form polycarbonate part. But the wall thickness distribution of the bulged specimen by this method is not so even.
关键词:
Bin GUO
,
Xiaodong XING
,
Huming DAI
,
Ronghua LUO
,
Zhongren WANG
材料科学技术（英文）
A flexible special device for viscous pressure forming is designed and implemented. By using three proportional electro-hydraulic relief valves connected to a computer for precise control of releasing pressure of the medium, we can form differential pressure distribution in the die cavity. With the cooperation of programmable logical controller (PLC), computer and sensor modules in control system the device can satisfy all the requirements of the new forming process.
关键词:
