锻压技术

端部密封对薄壁零件粘性介质压力的影响

英文标题：Effect of end sealing on viscous medium pressure of thin-wall part

分类号：TG376

出版年,卷(期):页码：2014,39(3):10-15

摘要：

介绍了单位长度变径比较大的薄壁零件粘性介质外压缩径成形原理，利用有限元软件ANSYS/LS-DYNA对成形过程进行了数值模拟，对筒坯的端部密封压力及筒坯材料流动情况进行了分析，发现采用“先慢后快”端部密封压力加载方式可以有效地抑制成形区壁厚减薄。通过实验研究了密封圈的初始密封压力对端部位移量的影响，实验结果表明，在保证密封的前提下使其初始密封压力越小越好。

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.

基金项目：

国家自然科学基金资助项目(51275130)

参考文献：

［1］丘宏扬,费亚娟.摩擦对薄板冲压件成形性能的影响[J].锻压装备与制造技术,2005,40(1):69-71.Qiu Hongyang, Huang Yajuan. Influence of friction on sheet metal stamping formability [J]. China Metalforming Equipment & Manufacturing Technology, 2005, (1): 69-71.
［2］Liu Junhua, Westhoff B, Ahmetoglu M A, et al. Application of viscous pressure forming (VPF) to low volume stamping of difficult-to-form alloys-results of preliminary FEM simulations [J]. Journal of Materials Processing Technology,1996,(53): 49-58
［3］王仲仁, 滕步刚, 汤泽军. 塑性加工技术新进展[J]. 中国机械工程，2009，20(1)：108-112.Wang Zhongren, Teng Bugang, Tang Zejun. New development on technology of plasticity[J]. China Mechanical Engineering,2009，20(1)：108-112.
［4］Singer W, Kaiser H , Singer X, et al . Hydroforming of Super-conducting tesla cavities[J]. Journal of Metal Processing Technology，2000，(87)：102-108.
［5］Fang Li, Richard Patton, Khurram Moghal. The relationship between weight reduction and force distribution for thin wall structures[J]. Thin-Walled Structures，2005，(43)：591-616.
［6］郎利辉, 王永铭, 段新民, 等. 复杂薄壁微小截面环形件的充液成形技术研究[J]. 锻压技术, 2011, 36(2): 34-38.Lang Lihui, Wang Yongming, Duan Xinmin,et al. Research on multi-step hydroforming of complicated thin wall circular part with small section[J]. Forging & Stamping Technology, 2011, 36(2): 34-38.
［7］Gao Tiejun, He Ping, Wang Zhongjin. Viscos medium outer pressure necking forming and numerical simulation for thin-wall parts [J]. Machinery Design and Manufacture, 2010, (6): 132-133.
［8］李继光，宫海兰，王忠金. 薄壁零件粘性介质外压多道次缩径研究[J]. 锻压技术. 2010, 35(3): 91-94.Li Jiguang, Gong Hailan, Wang Zhongjin. Research on multi-steps tube-compression of thin-wall parts with variable diameter by viscousmedium pressure forming[J]. Forging & Stamping Technology, 2010, 35(3): 91-94.
［9］田雨, 张杰, 韦永继. 聚氨酯弹性体摩擦系数影响因素探讨[J]. 聚氨酯工业，2002，17(1)：37-40.Tian Yu, Zhang Jie, Wei Yongji. The discussion on factors influencing the friction coeffcient of polyurethane elastomers[J]. Polyurethane Industry, 2002, 17(1)：37-40.
［10］方昆范, 黄英. 机械工程材料实用手册[M]. 沈阳：东北大学出版社，1995.Fang Kunfan, Huang Ying. Practical Handbook of Mechanical Engineering Materials[M]. Shengyang: Northeastern University Press，1995.

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