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
高速列车铝合金轴箱体锻造工艺设计及材料变形规律
英文标题:Forging process design and material deformation rules of aluminum alloy axle box body for high speed train
作者:    程仁策 吕正风   焦娟娟 赵国群 
单位:山东大学 山东南山铝业股份有限公司 
关键词:7050铝合金 高速列车轴箱体 锻造工艺 预成形设计 体积分配 
分类号:TG316
出版年,卷(期):页码:2018,43(1):14-19
摘要:

针对形状结构相对复杂的7050高强铝合金轴箱体,在Gleeble-1500热模拟试验机上对原材料进行了变形温度300~450 ℃、应变速率0.01~10 s-1的热模拟试验,获得了不同变形温度和变形速率下的真实应力-应变关系曲线,建立了含有应变补偿的7050铝合金Arrhenius本构关系模型;提出了一种能够合理分配材料体积的轴箱体预制坯形状,并设计了相应的挤压预锻工艺和模具结构,通过数值模拟研究了轴箱体锻造过程中金属流动规律。研究表明,挤压后的预锻件满足终锻件的体积分配要求,能够使终锻件充型饱满、流线分布合理,无折叠现象,工艺流程简化为自由锻压扁镦粗、挤压制坯和终锻3步,缩短了加工周期。在实际生产中缺乏多向锻造设备时,为轴箱体类锻件生产提供了一种可行的工艺方法。

 For a axle box body with complex shape and structure of high strength aluminum alloy 7050, thermal simulation tests with deformation temperatures of 300-450 ℃ and strain rates of 0.01-10 s-1 were carried out by Gleeble-1500 thermal simulated test machine. Then, the true stress-strain curves under different deformation temperatures and strain rates were obtained, and the Arrhenius constitutive model with strain compensation of aluminum alloy 7050 was established. Furthermore, the shape of performed blank for axle box body which could reasonably distribute the material volume was proposed, and the corresponding extrusion and pre-forging process and die structure were designed. Finally, the metal flow rules in the forging process of axle box body were analyzed by numerical simulation. The study shows that the pre-forging obtained by extrusion process can satisfy the volume distribution requirement of final forging with forging cavity filled completely, reasonable streamlines distribution and without folding defects. Thus, the forging process is simplified as free forging flatting, extrusion blanking and final forging, and the processing cycle is shortened. When there is lack of multi-directional forging equipment in factory, it presents a feasible method for the production of axle box body forgings.

基金项目:
作者简介:
作者简介:徐 潇(1992-),女,博士研究生,E-mail:xuxiao20151992@163.com。通讯作者:赵国群(1962-),男,博士,教授,E-mail:zhaogq@sdu.edu.cn
参考文献:

[1]江冰. 动车转向架关键零部件参数化设计与应用研究[D]. 北京: 北京交通大学, 2009.


Jiang B. Research and Application Parametric Design of the Key Parts of EMU Bogie [D]. Beijing: Beijing Jiaotong University, 2009.


[2]关敬波. 7050铝合金大扁锭半连铸工艺参数匹配规律的仿真研究 [D]. 长沙: 中南大学, 2007.


Guan J B. Research on the Parameters Matching of the Semi-continuous Casting Process of 7050 Aluminum Alloys [D]. Changsha: Central South University, 2007.


[3]胡瑞生, 张励忠, 覃彦龙, . CCDZ50型转向架轴箱铸造工艺模拟[J]. 铸造, 2008, 57 (2): 154-156.


Hu R S, Zhang L Z, Qin Y L, et al. Casting process simulation of CCDZ50 type bogie′s axle box [J]. Foundry, 2008, 57 (2): 154-156.


[4]刘鹏辉,郭鸿镇,王涛, . 等温锻造温度对7050铝合金组织与性能的影响[J]. 热加工工艺, 2009, 38 (1): 107-109.     


Liu P H, Guo H Z, Wang T, et al. Influence of isothermal forging temperature on microstructure and mechanical property of 7050 aluminum alloy [J]. Hot Working Technology, 2009, 38 (1): 107-109.  


[5]Ren X, Zhang L, Chen Y, et al. Tensile and fatigue properties of 7050 aluminum alloy axle box used for high speed train [J]. Procedia Engineering, 2012, 27: 914-922.


[6]王盛鑫. 有轨电车轴箱体锻造工艺与模具设计 [J]. 锻造与冲压, 2016, (11): 60-62.


Wang S X. Forging process and die design of the trolley axle box [J]. Forging & Metalforming, 2016, (11): 60-62.


[7]盛辉, 李明, 贺竹林, . 高速动车组铝合金轴箱体 [J]. 铁道车辆, 2014, 52 (11): 13-14.


Sheng H, Li M, He Z L, et al. Aluminum alloy axle box for high speed multiple units [J]. Rolling Stock, 2014, 52 (11): 13-14.


[8]Hamed Mirzadeh. Constitutive modeling and prediction of hot deformation flow stress under dynamic recrystallization conditions [J]. Mechanics of Materials, 2015, 85 (6): 66-79.


[9]杨建辉,张鹏,赵升吨.TC4-DT钛合金热变形本构方程,[J]. 塑性工程学报, 2016, 23(2): 120-125.


Yang J H, Zhang P, Zhao S D. Hot deformation constitutive equation of TC4-DT titanium alloy [J]. Journal of Plasticity Engineering, 2016, 23 (2): 120-125.


[10]陈微, 官英平, 王振华. 高钛6061铝合金轮毂精锻成形的微观组织模拟[J]. 塑性工程学报, 2017, 24(1): 1-8.


Chen W, Guan Y P, Wang Z H. Numerical simulation of microstructure evolution for precision forging of high titanium 6061 aluminum alloy wheels[J]Journal of Plasticity Engineering, 2017, 24(1): 1-8.


[11]傅垒, 王宝雨, 周靖, . 6111铝合金热变形行为及本构方程[J]. 塑性工程学报, 2013, 20 (2): 108-111.


Fu L, Wang B Y, Zhou J, et al. Constitutive equation for hot deformation behavior of 6111 aluminum alloy [J]. Journal of Plasticity Engineering, 2013, 20 (2): 108-111.


[12]于辉, 刘帅帅, 刘利刚, . TA17钛合金热力学行为及加工特性研究 [J]. 稀有金属, 2017, 41(1):1-7.


Yu H, Liu S S, Liu L G, et al. Hot mechanical behavior and deformability of TA17 titanium alloy[J].Chinese Journal of Rare Metals, 2017, 41(1):1-7.


[13]郝用兴, 王超峰, 张红艺, . 基于响应面法的汽车发电机磁极锻造成形工艺多目标优化 [J]. 锻压技术, 2016, 41 (12):1-7.


Hao Y X, Wang C F, Zhang H Y, et al. Multi-objective optimization on automobile generator pole in forging process based on response surface method [J]. Forging & Stamping Technology, 2016, 41 (12): 1-7.


[14]张会. 铝合金连杆锻造工艺设计及模拟研究 [J]. 铸造技术, 2011, 32 (6): 871-875.


Zhang H. Study on the die-forging technology simulation of aluminum alloy connecting rod [J]. Foundry Technology, 2011, 32 (6): 871-875.


[15]孙绍华. 模具设计中为避免锻件折叠应考虑的因素 [J]. 轻合金加工技术, 2007, 35 (4): 29-34.


Sun S H. Consider factors of avoiding forging pleat during die design [J]. Light Alloy Fabrication Technology, 2007, 35(4): 29-34.


[16]周杰, 齐文涛, 陶亚平, 等.转向节闭式挤锻工艺多目标优化设计[J]. 北京工业大学学报, 2015, 41 (7): 1108-1113.


Zhou J, Qi W T, Tao Y P, et al. Closed extrusion-die forging process of steering knuckle for multi-objective optimization design[J]. Journal of Beijing University of Technology, 2015, 41 (7): 1108-1113.


[17]张伟, 夏高宇, 王强, . 转向轴承套圈温锻成形工艺的有限元模拟 [J]. 锻压技术, 2016, 41 (12): 14-25.


Zhang W, Xia G Y, Wang Q, et al. Finite element analysis on warm forging process for steering bearing rings [J]. Forging & Stamping Technology, 2016, 41 (12):14-25.


[18]汪大成, 闫进军, 鞠秀义, . TC8合金转子叶片锻造工艺研究[J]. 材料科学与工艺, 2015, 23 (5): 20-24.


Wang D C, Yan J J, Ju X Y, et al. The study on forging process of blade of TC8 alloy[J]. Materials Science & Technology, 2015, 23 (5): 20-24.

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