Transactions of Materials and Heat Treatment

Title：Precision roll forging process of axle for rail transit

Authors： Yang Yong Chen Xianglong Zhang Bincheng Sun Yue Hou Huimin Sun Guoqiang Wang Xingye

Unit： Beijing Research Institute of Mechanical & Electrical Technology Ltd. Datong Locomotive Forging Co. Ltd.

KeyWords： RE2B axle precision roll forging rail transit forging streamline roundness

ClassificationCode：TG335.19

year,vol(issue):pagenumber：2022,47(5):33-37

Abstract：

Through the process analysis of RE2B axle forgings for rail transit, the two-pass precision roll forging process for the axle was designed and developed. Then, the relevant parameters of the precision roll forging simulation for the axle were determined by finite element technology, and the precision roll forging process of the axle was numerically simulated. The simulation results show that the axle is formed by precision roll forging, the roll forgings is regular, and the forging streamline is smooth and continuous. Each section of the axle is well roundness, and the ends are flat without bump and petal shape. On the world's first set of 1600 mm large-scale roll forging machine, the process experiment of the precision roll forging for RE2B axles was carried out, the trial-produce forgings were regular in shape, and the size of each part met the requirements, which was consistent with the numerical simulation. According to the requirements of the railway standards TB/T 2945—1999, the performance test of the trial-produce axle was applied after heat treatment, and the test results met the specified requirements.

Funds：

作者简介：杨勇（1982-），男，博士，正高级工程师，E-mail：yy19821110@163.com

Reference：

[1]郑书华. 空心列车轴多楔同步轧制形性控制理论与实验研究[D].宁波：宁波大学,2018.

Zheng S H. Study on Forming and Performance Theory and Experiment of Railway Hollow Shafts in Multi-Wedge Synchrostep Cross Wedge Rolling[D]. Ningbo：Ningbo University, 2018.

[2]薛振峰, 郑毅,赵兴龙,等.高速EA4T车轴钢低温性能研究[J].机械工程与自动化,2021，(6):114-116.

Xue Z F, Zheng Y, Zhao X L, et al. Research on low temperature performance of high speed EA4T axle steel[J]. Mechanical Engineering & Automation, 2021，(6):114-116.

[3]陈玲, 马跃.EA4T车轴坯锻后表面开裂机理研究[J].铁道机车与动车,2020，(4):34-37,6.

Chen L, Ma Y. Study on surface cracking mechanism of EA4T axle blank after forging [J]. Railway Locomotive and Motor Car, 2020，(4):34-37,6.

[4]初俊林. 高速列车轴轴坯新型成形工艺与设备的理论研究[D].济南：山东建筑大学,2018.

Chu J L. Theoretical Study on New Forming Process and Equipment of High Speed Train Axle Billet[D]. Jinan：Shandong Jianzhu University, 2018.

[5]张伟. 10 MN快锻机在重载车轴生产线中的应用技术[J].机械工程与自动化,2017，(5):193-195.

Zhang W. Control techniques of high speed oil hydraulic forging machine for heavy load axle production line [J]. Mechanical Engineering and Automation, 2017，(5):193-195.

[6]李志刚. 列车车轴楔横轧精制坯新设备与新工艺[D].长春：吉林大学,2010.

Li Z G. The New Equipment and Technology on Cross Wedge Rolling Precision Performing of Railway Axles[D]. Changchun：Jilin University, 2010.

[7]尹凌风. 列车车轴楔横轧轧后热处理残余应力研究[D].秦皇岛：燕山大学,2020.

Yin L F. Research on Heat Treatment Residual Stress in Train Axle after Cross Wedge Rolling[D]. Qinghuangdao: Yanshan University, 2020.

[8]夏卫明, 寻宝明,程玉.大直径薄壁钢管缩径成形工艺研究[J].锻造与冲压,2022，(3):52-56

Xia W M, Xun B M, Cheng Y.Research on the reducing diameter process of a large-diameter and thin-walled steel pipe[J]. Forging & Metalforming, 2022，(3):52-56.

[9]朱帅, 奚建胜.基于DEFORM的重型汽车前轴成形工艺及模具设计[J].锻压技术,2021,46(5):194-200.

Zhu S, Xi J S. Forming process and die design for heavy duty truck front axle based on DEFORM [J].

Forging & Stamping Technology, 2021, 46(5):194-200.

[10]张雪莉. 汽车后桥半轴塑性成形工艺设计与数值模拟研究[D].长春：吉林大学,2021.

Zhang X L. Design and Numerical Simulation Research on Plastic Forming Process of Automobile Rear Axle Half Shaft[D]. Changchun：Jilin University, 2021.

[11]王星, 刘宁,潘琪琛,等.某重型卡车前轴精密辊锻工艺设计与优化[J].模具工业,2021,47(3):47-49，60.

Wang X, Liu N, Pan Q C, et al. Process design and optimization of precision roll forging on heavy truck front axle[J]. Die & Mould Industry, 2021, 47(3):47-49，60.

[12]汽车轴类件楔横轧近净成形关键技术与应用[R].北京:北京科技大学,2018.

Key technologies and applications of automotive shaft parts wedge cross rolling with near net forming[R]. Beijing:University of Science and Technology Beijing,2018.

[13]TB/T 2945—1999,铁道车辆用LZ50钢车轴及钢坯技术条件[S].

TB/T 2945—1999,Specification of LZ50 steel axles and billets for railway vehicles[S].

Service：

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