铜线拉丝模具的优化设计  

Design optimization of copper wire drawing die

作　　者：陈海杰[1] 刘金枝[1] 陈峰[2] 刘太岗[1] 

机构地区：[1]上海海洋大学信息学院,上海201306 [2]上海电缆研究所,上海200093

出　　处：《广西大学学报（自然科学版）》2014年第5期993-999,共7页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(51104100)

摘　　要：针对当前铜线拉拔过程中，铜线拉丝速度提高，模具磨损加重的问题，通过对铜线拉丝模具的几何尺寸和金属丝塑性变形的数学分析，基于经典的上界定理，建立数学模型，求解在铜线拉拔过程中，具有最小功率下铜线拉丝模具压缩区的最佳锥角，并估计其误差。采用拼合的凹模模拟铜杆拉拔过程，测得拉拔因子，同时就模具的材质、润滑条件和拉拔力对最佳锥角的影响进行了讨论。研究表明，当铜线截面压缩率为20％～25％之间时，铜线拉丝模具压缩区的锥角2α控制在17°～20°的范围中为最优，此时铜线拉拔过程可有效减少模具磨损，延长了模具寿命。To overcome the problem that wear of drawing die becomes more serious by increasing of drawing speed, a mathematical model was developed by analyzing geometry dimension of copper wire drawing die and wire plastic deformation, based on classical high bound law to optimize the reduc-tion angle （ half） under the smallest work condition and evaluating and evaluating its error.Drawing process of copper wire was stimulated by adopting combined concave die to get friction factor value, taking into accounts of effects of die materials quality, lubrication condition and pulling force.The results show that reduction angle 2αis optimally designed in the ranges of 17 °~20 °when cross area reduction ratio of copper wire is 20%~25%,which can reduce wear of die and prolong working life of die effectively.

关 键 词：上界定理 最佳半锥角 拉丝 模具材质 

分 类 号：TG359[金属学及工艺—金属压力加工]