Transactions of Materials and Heat Treatment

Title：Axle chamfer forming process and anvil design

Authors： Cao Zhongyuan Zhuang Xincun Zhang Yan Lu Yuanhe Zhao Zhen

Unit： Shanghai Jiao Tong University Ma Steel Rail Transportation Equipment Co. Ltd.

KeyWords： chamfer circular anvil design constraints rotary forging axle

ClassificationCode：TH16

year,vol(issue):pagenumber：2019,44(6):73-80

Abstract：

In the forging production process of axle,the anvil geometry sizes and forging process parameters are the main factors affecting the surface quality and mechanical properties of axle forgings. Therefore, the relationship between the arc radius of circular anvil and the reduction in the axle chamfer forming process and the deformation rule in the rotary forging process of axle were studied by geometric analysis. The different circular anvil arc radius corresponds to the different maximum chamfer reduction, and some certain relationships of the rotation angle, the step amount and the length of the circular anvil work belt should be met in order to ensure the dimensional accuracy during the rotary forging process. Furthermore, the above design constraints were applying to the forging process parameter design of square blank of 260 mm×260 mm, and the geometrical dimensions of circular anvil and the corresponding process parameters of axle chamfer forming are determined combining with the numerical simulation of microstructure which provides strong guidance for the actual production.

Funds：

国家重点研发计划课题（2017YFB0703004）

曹中源（1994-），男，硕士研究生 E-mail：caozhongyuan@sjtu.edu.cn 通讯作者：庄新村（1980-），男，博士，教授 E-mail：georgezxc@sjtu.edu.cn

Reference：

［1］李传民, 束学道, 胡正寰. 铁道车辆用车轴成形方法现状与研究
［J］. 冶金设备, 2006，(6):5-8.

Li C M, Shu X D, Hu Z H. The research and actuality on methods of forming railway axles
［J］. Metallurgical Equipment, 2006，(6):5-8.

［2］陈飞. 热锻非连续变形过程微观组织演变的元胞自动机模拟
［D］. 上海: 上海交通大学，2012.

Chen F. Simulation of Microstructure Evolution during Discontinuous Hot Forging Process Using Cellular Automation Method
［D］. Shanghai: Shanghai Jiaotong University, 2012.

［3］杜诗文, 孙瑞环, 李永堂. 圆弧砧结构尺寸对列车车轴成形质量影响
［J］. 塑性工程学报, 2015, 22(6):26-31.

Du S W, Sun R H, Li Y T. Effect of anvil structure on forming quality of railway axles
［J］. Journal of Plasticity Engineering, 2015, 22(6):26-31.

［4］谭波. 10 MN全自动快锻机车轴锻造成形工艺研究及软件开发
［D］. 长沙: 中南大学, 2014.

Tan B. The Research on Forging of Railway Axle with 10 MN Automatic Fast Forging Machine and Process Software Development
［D］. Changsha: Central South University, 2014.

［5］付强，崔振山，陈文，等. 不同型砧下大型轴类锻件倒棱滚圆过程的数值模拟研究
［J］. 模具技术，2008，(3): 1-6.

Fu Q, Cui Z S, Chen W,et al. Numerical simulation of chamfering and rounding process of heavy forgings under different anvils
［J］. Die and Mould Technology, 2008,(3): 1-6.

［6］潘湘华, 白玉冰, 齐巧玲. 铁路车辆用车轴锻造双台阶型砧设计
［J］. 锻压装备与制造技术, 2015, 50(4): 59-60.

Pan X H, Bai Y B, Qi Q L. Design of 2-step dies for forging axle of railway vehicle
［J］. China Metalforming Equipment & Manufacturing Technology, 2015, 50(4):59-60.

［7］张莉萍, 倪利勇, 刘助柏, 等. 水平V型砧连续拔长工艺的数值模拟
［J］. 机械设计与制造, 2009，(7):231-232.

Zhang L P, Ni L Y, Liu Z B, et al. Numerical simulation of continuous stretching with horizontal V-shaped anvils
［J］. Machinery Design & Manufacture, 2009，(7):231-232.

［8］Choi S K, Chun M S, Tyne C J V, et al. Optimization of open die forging of round shapes using FEM analysis
［J］. Journal of Materials Processing Technology, 2006, 172(1):88-95.

［9］白翔宇. C70型车用LZ50钢RE2B型车轴锻造工艺
［J］. 机车车辆工艺, 2014，(4):21-22.

Bai X Y. C70 type LZ50 steel RE2B type axle forging process
［J］. Locomotive & Rolling Stock Technology, 2014，(4):21-22.

［10］秦敏, 李继光, 房娃, 等. 空心车轴径向锻造工艺的模拟研究
［J］. 太原科技大学学报, 2008，29(5):373-376.

Qin M, Li J G, Fang W, et al. Simulation and research of hollow-axle during the precise forging
［J］. Journal of Taiyuan University of Science and Technology, 2008，29(5):373-376.

［11］Du S W, Li Y T, Song J J. Optimization of forging process parameters and anvil design for railway axle during high-speed forging
［A］. ASME. Proceedings of the ASME 2015 International Mechanical Engineering Congress and Exposition
［C］. Houston: ASME, 2015.

［12］李春峰. 金属塑性成形工艺及模具设计
［M］. 北京：高等教育出版社, 2008.

Li C F. Metal Plastic Forming Process and Die Design
［M］. Beijing：Higher Education Press, 2008.

［13］马鹏举, 许志永, 程向，等. 基于旋转锻造工艺的航空发动机薄壁空心细长轴加工精度研究
［J］. 锻压技术, 2017, 42(3): 7-16.

Ma P J, Xu Z Y, Chen X, et al. Study on machining precision of thin wall long hollow shaft for aero-engine based on rotary swaging technology
［J］. Forging & Stamping Technology, 2017, 42(3):7-16.

Service：

【This site has not yet opened Download Service】【Add Favorite】