锻压技术

基于CTSH150型接触线拉拔模具结构的研究

英文标题：Research on drawing die structure based on contact wire CTSH150

作者：刘迪张爽宋桂秋

单位：东北大学

分类号：TG355.4

出版年,卷(期):页码：2018,43(3):128-132

摘要：

针对CSTH150型接触线拉拔工艺，以拉拔理论为基础设计了直线形的拉拔模具，并通过取点拟合的方法设计了圆弧形和指数形拉拔模具。在有限元软件平台ANSYS Workbench中，将拉拔模型对称化处理，通过结构非线性方法，分析了拉拔过程中模具和线坯塑性成形内部应力强度、最大剪应力、等效von Mises应力大小及分布。在直径Φ28 mm到直径Φ24.04 mm拉拔道次，恒定速度为8 mm·s-1时，得出直线形结构拉拔模具对线坯内部的各塑性特性应力最小，有助于提高拉拔效率；而圆弧形和指数形结构拉拔模具在拉拔过程中应力分布在模具中上区域，更利于拉拔过程中润滑剂对模具和线坯的润滑。

Aiming at the drawing process of contact wire CSTH150, drawing dies with linear shape was designed based on drawing theory, and drawing dies with circular arc and exponential shape were designed by fitting points. A symmetry treatment was applied to drawing dies in the finite element software platform ANSYS Workbench, and stress intensity, maximum shear stress and the value and distribution of equivalent von Mises stress were analyzed by nonlinear structure in the drawing process of dies and plastic deformation of wire bars. The results show that each plastic characteristic stress inside wire bars is the minimum by drawing die with linear structure under drawing diameter from Φ28 to Φ24.04 mm and constant velocity of 8 mm·s-1, which is helpful to improve drawing efficiency. However, for drawing die with circular arc shape and exponential shape, the stress distributes on upper zone of dies in the drawing process, and it is more beneficial for lubrication of dies and wire bars during drawing.

基金项目：

辽宁省重大装备制造协调创新中心项目

作者简介：刘迪（1987-），男，硕士，工程师 E-mail：liudi0216@163.com 通讯作者：宋桂秋（1960-），男，博士，教授 E-mail：song1892@sina.com

参考文献：

［1］ Wright R N. Wire Technology
［M］. 2nd Edition. Oxford：Elsevier, 2011.

［2］钟卫佳. 铜加工技术实用手册
［M］. 北京：冶金工业出版社，2007.
Zhong W J. Practical Handbook of Copper Processing Technology
［M］. Beijing: Metallurgical Industry Press, 2007.

［3］温景林.金属挤压与拉拔工艺学
［M］.沈阳:东北大学出版社,1996.
Wen J L. Metal Extrusion and Drawing Technology
［M］. Shenyang: Northeastern University Press, 1996.

［4］何平, 毛建中, 宋建力. 铟镍合金特种条带冲压成形分析与模具设计
［J］. 锻压技术, 2017, 42(4):43-50.
He P, Mao J Z, Song J L. Analysis on stamping of special strap 〖LL〗and die design for indium nickel alloys
［J］. Forging & Stamping Technology，2017, 42(4):43-50.

［5］尚凯丰. 铜材热挤压与拉拔加工模具设计
［J］. 中国机械, 2016, (10):68-69.
Shang K F. Design of hot extrusion and drawing die for copper materials
［J］. Machine China, 2016, (10):68-69.

［6］方琦. 国内外硬质合金拉丝模的发展情况
［J］. 硬质合金, 1994,(1):57-63.
Fang Q. The development of cemented carbide drawing die at home and abroad
［J］. Cemented Carbide, 1994,(1): 57-63.

［7］贾春扬. 胎圈钢丝拉拔工艺和模具孔型设计研究
［D］. 杭州：浙江工业大学, 2009.
Jia C Y. Research on the Drawing Technology of Tyre Bead Wires and Aperture Design of the Drawing Die
［D］. Hangzhou: Zhejiang University of Technology, 2009.

［8］肖东平. 拉丝模的最佳孔型结构及加工方式
［J］. 金属制品, 2003, 29(1):44-46.
Xiao D P. Optimum pass structure and machining mode of wire drawing die
［J］. Steel Wire Products, 2003, 29 (1): 44-46.

［9］ Maxwell T H, 朱润岱. 合金模具形状对钢丝质量的影响
［J］. 大连特殊钢, 1994, (5):55-64.
Maxwell T H, Zhu R D. Influence of alloy mold shape on quality of steel wire
［J］. Dalian Special Steel, 1994, (5): 55-64.

［10］王殿君. 中低碳钢丝拉拔性能影响因素及改良研究
［D］. 西安：西安建筑科技大学, 2008.
Wang D J. Influence Factors and Improvement of Drawing Performance of Medium and Low Carbon Steel Wire
［D］. Xi′an: Xi′an University of Architecture and Technology, 2008.

［11］杨晓静, 孙方宏, 张志明,等. 金刚石涂层模具铜管固定芯头拉拔过程数值模拟
［J］. 上海交通大学学报, 2009,43 (5):841-846.
Yang X J, Sun F H, Zhang Z M, et al. Finite element analysis of copper tube drawing process using diamond-coated dies with fixed plug
［J］. Journal of Shanghai Jiao Tong University, 2009,43(5): 841-846.

［12］董勇军, 杨振, 黄纯德,等. 铜包铝复合线拉拔工艺的数值模拟
［J］. 热加工工艺, 2016,45 (3):160-162.
Dong Y J, Yang Z, Huang C D, et al. Numerical simulation of drawing process for copper-clad aluminum composite wire
［J］. Hot Working Technology, 2016,45(3): 160-162.

［13］郑新, 陆晓峰. 基于有限元模拟的20/316L复合管拉拔成形分析
［J］. 塑性工程学报, 2010, 17(2):154-159.
Zheng X, Lu X F. Analysis on the drawing of 20/316L composite pipe based on FEM simulation
［J］. Journal of Plasticity Engineering, 2010, 17 (2): 154-159.

［14］赵天章, 张士宏, 张凌云,等. 残余应力影响冷拉拔钢丝强度梯度的数值仿真
［J］. 塑性工程学报, 2016, 23(5):96-102.
Zhao T Z, Zhang S H, Zhang L Y,et al. Numerical simulation on influence of residual stress on strength gradient in cold drawn steel wire
［J］. Journal of Plasticity Engineering, 2016, 23(5): 96-102.

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