铁路罐车封头冲压成形研究

doi:10.3969/j.issn.0258-2724.2013.04.023

基金项目:

中央高校基本科研业务费专项资金资助项目(SWJTU09BR102)

计量
- 文章访问数:997
- HTML全文浏览量:84
- PDF下载量:274
- 被引次数:0
出版历程
- 收稿日期:2012-10-20
- 刊出日期:2013-08-25

Stamp-Forming of Heads of Railway Tank Cars

摘要

摘要:为保证某型铁路罐车封头冷冲压成形质量,设计了具有圆形拉延筋、矩形拉延筋和不设置拉延筋3种结构形式的拉延模具型面;使用有限元方法,对3种模具结构形式下封头的冲压成形过程进行模拟分析,对比了封头起皱趋势、成形回弹和料厚变化等模拟结果,并根据仿真结果选择合理的模具结构形式进行了试验.研究结果表明:采用矩形拉延筋进行封头冲压成形,能更有效的避免封头出现起皱、鼓包等成形缺陷,而且成形后回弹量较小;矩形拉延筋模具冲压试验所得封头无成形缺陷,测得封头最小料厚为9.6 mm,最大料厚为10.5 mm,与模拟结果基本一致;采用矩形拉延筋模具进行该型封头冷冲压成形是有效的.
- 罐车封头/
- 冷冲压/
- 拉延筋/
- 有限元模拟
Abstract:In order to ensure the cold stamping quality of railway tank car heads, die surfaces with three different types of draw bead structures at the die entrance, including round draw bead, rectangular draw bead and no draw bead, were designed for the head stamping process. Then, the head stamping processes for the three types of die entrances were simulated using the finite element method. The simulation results were analyzed and compared in terms of wrinkles, spring-back, and thickness variation. On this basis, a reasonable die structure was selected and manufactured for stamping experiments. The result shows that the die entrance with rectangular draw bead could effectively avoid wrinkles and blowups, and has a smaller spring back. The stamping experiment results with the rectangular draw bead indicate that the stamped heads has no defects; the minimum thickness is 9.6 mm, and the maximum thickness is 10.5 mm, which consist with the computational results. Therefore, adopting the die with rectangular draw bead for cold stamping of railway tank car heads is effective.
- tank car heads/
- cold stamping/
- draw bead/
- finite element simulation

HTML全文

参考文献 (14)

LUO Zhengzhi, ZENG Jing, YU Jinpeng. Influence of blank holding force on stamping of large ellipsoidal heads based on simulation[J]. Applied Mechanics and Materials, 2012, 217-219(3): 2097-2100.

陆博福,陆平. 压力容器封头整体冲压成形工艺[J]. 大型铸锻件,2008(6): 19-21. LU Bofu, LU Ping. Entirety drawing process of pressure vessel end plate[J]. Heavy Casting and Forging, 2008(6): 19-21.

赵吉星,丁立人,刘小宁. 水冷磁体容器的结构设计与强度分析[J]. 江南娱乐网页版入口官网下载安装学报,2011,46(5): 836-840. ZHAO Jixing, DING Liren, LIU Xiaoning. Structural design and strength analysis of water-cooled magnet vessel[J]. Journal of Southwest Jiaotong University, 2011, 46(5): 836-840.

刘帆. N10276复合板封头热压成型的分析[J]. 压力容器,2007,24(5): 21-25. LIU Fan. Analysis about hot forming of N10276 clad plate head[J]. Pressure Vessel Technology, 2007, 24(5): 21-25.

梁方杰. 不锈钢椭圆封头热压制裂纹分析[J]. 石油化工设备,2005,34(3): 65-67. LIANG Fangjie. Cracking analysis on hot formed stainless steel elliptical head[J]. Petro-Chemical Equipment, 2005, 34(3): 65-67.

邢卓,崔晓东,魏佳,等. Inconel 600封头冲压加工[J]. 压力容器,2004,21(5): 24-27. XING Zhuo, CUI Xiaodong, WEI Jia, et al. Punching of inconel 600 vessel head[J]. Pressure Vessel Technology, 2004, 21(5): 24-27.

石建军,成志强,柳葆生. 注射成形填充模拟的修正算法[J]. 江南娱乐网页版入口官网下载安装学报,2012,47(6): 962-967. SHI Jianjun, CHENG Zhiqiang, LIU Baosheng. Modified algorithm for simulation of injection molding process[J]. Journal of Southwest Jiaotong University, 2012, 47(6): 962-967.

ZHANG Jinhui, ZHAN Mei, YANG He, et al. 3D-FE modeling for power spinning of large ellipsoidal heads with variable thicknesses[J]. Computational Materials Science, 2012(53): 303-313.

安红萍,刘建生,郭玉茹,等. 大型厚壁半球形封头成形的模拟与试验研究[J]. 锻压技术,2009,34(5):135-138. AN Hongping, LIU Jiansheng, GUO Yuru, et al. Numerical simulation and experimental research of lager thick-wall semi sphere head forming[J]. Forging and Stamping Technology, 2009, 34(5): 135-138.

LI J Z, LIU Y H, CEN Z Z, et al. Finite element analysis for buckling of pressure vessels with ellipsoidal head[J]. International Journal of Pressure Vessels and Piping, 1998(75): 115-120.

严仁军,李双印,王呈方. 船体中厚板冷压成形的回弹模[J]. 塑性工程学报,2011,18(4): 54-58. YAN Renjun, LI Shuangyin, WANG Chengfang. Numerical simulation research on springback of ship plate in multi-point forming mechanism with square press heads[J]. Journal of Plasticity, 2011, 18(4): 54-58.

YANG Xiangan, RUAN Feng. A die design method for springback compensation based on displacement adjustment[J]. International Journal of Mechanical Sciences, 2011(53): 399-406.

TAHERIZADEH A, GHAEI A, GREEN D E, et al. Finite element simulation of springback for a channel draw process with drawbead using different hardening models[J]. International Journal of Mechanical Sciences, 2009(51): 314-325.

阳德森. 基于有限元法的盒形件拉深回弹分析及其控制. 重庆:重庆大学, 2010.

施引文献

附加材料 (0)

访问统计

点击查看大图

计量

文章访问数:997
HTML全文浏览量:84
PDF下载量:274
被引次数:0