Cu-Cr-Zr合金大功率电动机转子端环的锻造性能分析  

Forging formability analysis on Cu-Cr-Zr rotor end ring of high power motor

作　　者：毕彦 乔靖雯[2] 马叙 丁燕红[4] Bi Yan;Qiao Jingwen;Ma Xu;Ding Yanhong(School of Mechanical Engineering,Tianjin Sino-Gennan University of Science and Technology,Tianjin 300350,China;College of Materials Science and Engineering,Tianjin University of Technology,Tianjin 300384,China;Tianjin Metal Material Near Net Forming Technical Engineering Center,Tianjin 300384,China;College of Electrical and Electronic engineering,Tianjin University of Technology,Tianjin 300383,China)

机构地区：[1]天津中德应用技术大学机械工程学院,天津300350 [2]天津理工大学材料科学与工程学院,天津300384 [3]天津市金属材料近净成形技术工程中心,天津300384 [4]天津理工大学电气电子工程学院,天津300383

出　　处：《锻压技术》2018年第9期14-20,共7页Forging & Stamping Technology

基　　金：国家自然科学基金资助项目(50975295);天津市自然科学基金重点项目(15JCZDJC38700);天津市自然科学基金项目(14JCYBJC16200)

摘　　要：铜铬锆合金在高温环境下工作仍具有高强度、高导电率的特点,是目前大功率异步牵引电动机转子端环的最佳材料。以热锻成形的铜铬锆合金转子端环为研究对象,运用Deform软件进行模型数学计算,并进行实验验证,得到铜铬锆端环的最佳锻造方式。研究首先通过Gleeble热压缩实验建立Cu-Cr-Zr合金高温变形的材料数据库导入Deform-3D中,始锻温度设在750-800℃之间,锻造比为1.4,锻造方式分为两种,分别是一次成形和复合成形。模拟分析结果表明,铜铬锆合金锻造比为1.4时,始锻温度为790℃,终锻温度约在650-710℃之间,采用复合成形的方式会使试样受力、传热更为均匀,成形性更好并且对模具的损害也较小。Cu-Cr-Zr alloy is the best material to produce rotor end ring of high-power asynchronous traction motor because of its high strength and high conductivity in high temperature environment. For Cu-Cr-Zr rotor end ring produced by hot forging,its model was calculated by software Deform and verified by experiment,and the optimal forging process of the rotor end ring was obtained. Then,the material database of high temperature deformation of Cu-Cr-Zr alloy was established by Gleeble hot compression test and imported into Deform-3 D. In this simulation,the forging temperature was from 750 ℃ to 800 ℃ and the forging ratio was 1. 4,and two kinds of forging methods of once-forming and the combined forming were adopted. The results show that when the forging ratio is 1. 4 and the initial forging temperature is 790 ℃,the final forging temperatures are about 650 - 710℃,the specimen with combined forming bears more uniform force and heat transfer and has better formability and less damage to the mold.

关 键 词：高强高导 铜铬锆合金 转子端环 热锻 DEFORM 

分 类 号：TG319[金属学及工艺—金属压力加工]