网站首页期刊简介编委会过刊目录投稿指南广告合作征订与发行联系我们English
模具入口角度对铜排连续挤压扩展成形的影响
英文标题:Effects of die entry angles on copper bus bar continuous extrusion extending forming
作者:曹雪 刘元文 裴久杨 
单位:大连交通大学 
关键词:铜排连续挤压 模具入口角度 扩展成形 数值模拟 
分类号:TG376
出版年,卷(期):页码:2013,38(5):91-96
摘要:

连续挤压扩展成形是一种先进的铜排制造方法,而模具入口角度是影响产品成形的重要因素。根据连续挤压变形特点,采用刚粘塑性有限元法,应用Deform-3D软件,针对模具的不同入口角度进行连续挤压变形过程的模拟。分析了不同模具入口角度对连续挤压各变形区温度、等效应力、等效应变、速度场以及工模具载荷产生的影响。结果表明,在扩展成形阶段,当模具入口角度为15°时,变形金属等效应力分布均匀,拐角处应力集中小,定径带处金属流动速度的均方差最小仅为0.05,挤压轮扭矩和腔体载荷都比较合理,有利于扩展成形。通过试验验证了模拟结果,为连续挤压模具优化设计提供了重要的理论依据。
 

Continuous extrusion extending deformation is an advanced forming process for manufacturing copper bus bar and the entry angle of die is the important factor that affects product forming. According to the characteristics of continuous extrusion deformation, the copper bus bar continuous extrusion deforming process by adopting the dies of different entry angles was simulated using rigid-plastic FEM based on Deform-3D, the temperature, strain-effective, stress-effective, load and velocity field were analyzed. Results show that in the extending forming stage, when the die entry angle is 15°, the stress-effective distribution is more uniform, the stress concentrating on the corner is small, the metal flow velocity mean-squared error at die working area is the minimum of 0.05, the torque of extrusion wheel and load of chamber are reasonable, which are in favor of extending forming. The simulation results were verified by experiment,which provides important theoretical foundation for the continuous extrusion die-design optimization.

基金项目:
国家科技支撑计划资助项目(2011BAE23B01)
作者简介:
曹雪(1978-),女,硕士,助理工程师
参考文献:


[1]樊志新, 宋宝韫, 刘元文,等. 电工铜排短流程制造新技术[J]. 有色金属加工, 2007,(2): 48-50.Fan Z X, Song B Y, Liu Y W, et al. A new manufacturing technology of short process for electrical copper bus-bar [J]. Non-ferrous Metal Processing, 2007,(2): 48-50.
[2]张咏生. 连续挤压工艺与传统工艺生产换向器铜排的对比分析[J]. 有色金属加工, 2011, 40(6): 30-32.Zhang Y S. Contrast analysis between continuous extrusion technology and traditional technology for manufacturing copper commentator bus-bar [J]. Non-ferrous Metal Processing, 2011, 40(6): 30-32.
[3]宋宝韫, 于欣, 陈吉光. 生产铜扁线的最新技术-连续挤压[J]. 变压器, 2002, 39(9): 32-33.Song B Y, Yu X, Chen J G. The latest technology for manufacturing copper plat wire-continuous extrusion [J]. Transformer, 2002, 39(9): 32-33.
[4]运新兵, 宋宝韫, 高飞. 连续挤压技术在铜管生产上的应用[J]. 金属成形工艺, 2002, 20(3): 46-47.Yun X B, Song B Y, Gao F. Application of continuous extrusion technology in manufacturing copper tube [J]. Metal Forming Technology, 2002, 20(3): 46-47.
[5]储灿东, 王东哲, 彭颖红, 等. 连续挤压成形过程的温度场研究[J]. 塑性工程学报,2001, 1(8): 8-12.Chu C D, Wang D Z, Peng Y H, et al. The study of temperature field of continuous extrusion forming process [J]. Journal of Plasticity Engineering, 2001, 1(8): 8-12.
[6]谢玲玲, 宋宝韫, 王萍, 等. 有限元模拟在铜母线连续挤压扩展成形中的应用[J]. 锻压技术, 2010, 35 (3): 144-147.Xie L L, Song B Y, Wang P, et al. Application of FEM simulation in copper bus bar CONFORM extending-forming [J]. Forging and Stamping Technology, 2010, 35 (3): 144-147.
[7]周天国, 温景林, 李飞, 等. 连续扩展挤压成形常见缺陷分析与预防[J]. 材料与冶金学报, 2004, (1): 17-18.Zhou T G, Wen J L, Li F, et al. Analysis and prevention in common defects of continuous extending extrusion forming [J]. Journal of Materials and Metallurgy, 2004, (1): 17-18.
[8]宋宝韫, 宋娜娜, 陈莉. 宽铜母线连续挤压扩展成形挤压力的分析[J]. 塑性工程学报, 2011, 18(4): 6-10.Song B Y, Song N N, Chen L. Analysis of continuous extrusion extending forming force for wide copper bus-bar [J]. Journal of Plasticity Engineering, 2011, 18(4): 6-10.
[9]郭华仲, 宋宝韫, 陈莉. 连续挤压杆坯直径的工艺影响研究[J]. 锻压技术, 2010, 35(1): 138-141.Guo H Z, Song B Y, Chen L. Study on process influence on feedstock diameter in continuous extrusion [J]. Forging and Stamping Technology, 2010, 35(1): 138-141.
[10]赵颖, 运新兵, 李冰, 等. 连续挤压与正挤压在扩展成形中的对比分析[J]. 锻压技术, 2009, 33(4): 163-167.Zhao Y, Yun X B, Li B, et al. Contrast analysis of extending forming between continuous extrusion and forward extrusion [J]. Forging and Stamping Technology, 2009, 33(4): 163-167.
[11]陈旭, 运新兵, 赵颖, 等. 分流模结构对连续挤压扩展成形的影响[J]. 塑性工程学报, 2010, 17(2): 68-72.Chen X, Yun X B, Zhao Y, et al. Effects of the porthole structure on extending forming of copper during continuous extrusion [J]. Journal of Plasticity Engineering, 2010, 17(2): 68-72.
[12]王军, 运新兵, 李冰, 等. 纯铜连续挤压全过程的组织演变[J]. 有色金属, 2011, (5): 38-41.Wang J, Yun X B, Li B, et al. Microstrucure evolution of copper during continuous extrusion process[J]. Non-ferrous Metal, 2011(5): 38-41.
[13]赵颖, 运新兵, 宋宝韫. 轮槽形状对铜母线连续挤压影响的有限元分析[J]. 锻压技术, 2008, 33(2): 138-142Zhao Y, Yun X B, Song B Y. FEM analysis of wheel groove influence on copper bus bar continuous extrusion  [J]. Forging and Stamping Technology, 2008, 33(2): 138-142.
[14]牛玉英, 陈莉, 宋宝韫. 铜扁线连续挤压成形过程的数值模拟[J]. 有色金属, 2006, 58(2): 439-444.Niu Y Y, Chen L, Song B Y.Numerical simulation of continuous extrusion forming process for copper flat wire [J]. Non-ferrous Metal, 2006, 58(2): 439-444.
[15]刘明月, 宋宝韫, 运新兵, 等. 基于有限元法的铜母线连续挤压扩展成形过程的数值模拟[J]. 热加工工艺, 2008, (17): 72-75.Liu M Y, Song B Y, Yun X B, et al. Numerical simulation of continuous extrusion extending forming process for copper bus bar based on FEM [J].  Hot Working Technology, 2008, (17): 72-75.

服务与反馈:
文章下载】【加入收藏
《锻压技术》编辑部版权所有

中国机械工业联合会主管  中国机械总院集团北京机电研究所有限公司 中国机械工程学会主办
联系地址:北京市海淀区学清路18号 邮编:100083
电话:+86-010-82415085 传真:+86-010-62920652
E-mail: fst@263.net(稿件) dyjsjournal@163.com(广告)
京ICP备07007000号-9