Transactions of Materials and Heat Treatment

Title：Effect of end sealing on viscous medium pressure of thin-wall part

Authors： Li Jiguang Zhao Ruifeng Liu Jingping Zhang Jiegang Tian shu Wang Zhongjin

Unit： Tianjin Aerospace Long March Launch Vehicle Manufacturing Co. Ltd. Harbin Institute of Technology

KeyWords： end sealing pressure tube-compression thin-wall part viscous medium

ClassificationCode：TG376

year,vol(issue):pagenumber：2014,39(3):10-15

Abstract：

Pressure forming principle of viscous medium of thin-wall part tube-compression which has the characteristics of larger unit variable diameter ratio was introduced. The forming process was analyzed by finite element method (ANSYS/LS-DYNA). The effect of sealing pressure between tube-blank end and viscous medium on the forming process and the law of material flow were analyzed. Thickness reduction can be controlled by optimizing loading modes of end sealing pressure. The effect of initial sealing pressure of sealing ring on end displacement was conducted by experiment. The result shows that on the premise of guarantee the seal, the initial sealing pressure should be as small as possible.

Funds：

国家自然科学基金资助项目(51275130)

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