Numerical simulation of induction hardening of 50AT switch rail

doi:10.13251/j.issn.0254-6051.2020.05.039

Abstract

Abstract: The strength, wear resistance and service life of switch rail can be improved by medium frequency induction hardening. After the rail head is hardened, there will be a large residual stress. Through the establishment of 50AT switch rail model and the simulation of hardening, the distribution of residual stress after hardening was obtained, and the stress results were compared and verified by the method of blind hole stress measurement. The results show that the residual stress in the middle part of the rail bottom is larger, and the residual stress in the tip part is smaller. The difference between the simulated stress and the measured stress is smaller by selecting the same measuring point at the rail bottom. The test results can be used to guide the elimination of residual stress after hardening of switch rail and the placement of vibration exciter during vibration aging.

Key words: 50AT switch rail, U71Mn steel, induction hardening, blind hole method, residual stress

CLC Number:

U213.6

Cheng Yi, Xu Jinhui, Feng Qingsong, Zhang Bin, Zou Xiaokui, Liu Changyu. Numerical simulation of induction hardening of 50AT switch rail[J]. Heat Treatment of Metals, 2020, 45(5): 199-205.

References

[1]汪广志, 李亚娟, 张玉梅, 等. 提高50AT尖轨趾端轨头淬火表面硬度[J]. 金属加工(热加工), 2016(21): 55-57.
[2]王树青, 詹新伟. 高速道岔尖轨热处理新工艺研究[J]. 铁道建筑, 2012(5): 142-144.
[3]张军政. U75V在线热处理尖轨廓形及伤损特征分析[J]. 铁道建筑, 2017, 57(8): 110-114.
Zhang Junzheng. Analysis of profile and damage features of switch rail made of U75V online heat treatment rail[J]. Railway Engineering, 2017, 57(8): 110-114.
[4]王权, 付学义, 李智丽. 钢轨内残余应力的产生及其危害[J]. 金属热处理, 2004, 29(6): 29-33.
Wang Quan, Fu Xueyi, Li Zhili. Production of the residual stress in the rail and its harm[J]. Heat Treatment of Metals, 2004, 29(6): 29-33.
[5]高凡, 张大伟, 张建国. 高速铁路道岔轨件的感应淬火与变形控制[J]. 金属热处理, 2011, 36(3): 103-105.
Gao Fan, Zhang Dawei, Zhang Jianguo. Induction hardening and deformation control of rail components for high-speed railway turnout[J]. Heat Treatment of Metals, 2011, 36(3): 103-105.
[6]张清东, 曾杰伟, 罗晓明, 等. 高强度钢板残余应力振动时效消减技术试验研究[J]. 机械工程学报, 2017, 53(1): 86-92.
Zhang Qingdong, Zeng Jiewei, Luo Xiaoming, et al. Experimental study on residual stress reduction for the high-strength steel based on vibration stress relief[J]. Journal of Mechanical Engineering, 2017, 53(1): 86-92.
[7]陈林, 李晓娜, 张志扬, 等. U75V钢轨轧后冷却过程弯曲变形演变规律的模拟[J]. 金属热处理, 2016, 41(12): 168-172.
Chen Lin, Li Xiaona, Zhang Zhiyang, et al. Simulation of bending deformation evolution of U75V rail during cooling process after rolling[J]. Heat Treatment of Metals, 2016, 41(12): 168-172.
[8]张大伟, 高凡, 路无穷, 等. 60AT1-U75V钢轨压型跟端感应热处理[J]. 金属热处理, 2016, 41(2): 176-180.
Zhang Dawei, Gao Fan, Lu Wuqiong, et al. Induction hardening for forming heel-end 60AT1-U75V steel rail[J]. Heat Treatment of Metals, 2016, 41(2): 176-180.
[9]王慧军, 陈林, 郭飞翔, 等. 残余应力对U75V重轨钢疲劳裂纹扩展速率的影响[J]. 金属热处理, 2017, 42(6): 23-27.
Wang Huijun, Chen Lin, Guo Feixiang, et al. Effect of residual stress on fatigue crack propagation rate of U75V heavy rail steel[J]. Heat Treatment of Metals, 2017, 42(6): 23-27.
[10]胡敏, 余常武, 赵万华, 等. 机床基础大件振动时效工艺参数优化方法[J]. 中国机械工程, 2014, 25(23): 3137-3142.
Hu Min, Yu Changwu, Zhao Wanhua, et al. Optimization method of VSR process parameters for large machine tool body[J]. China Mechanical Engineering, 2014, 25(23): 3137-3142.
[11]陆才善. 残余应力测试小孔释放法[M]. 西安: 西安交通大学出版社, 1991.
[12]刘瑞蕊. 宽厚比超限的焊接箱形构件残余应力的试验研究与有限元分析[D]. 西安: 西安建筑科技大学, 2009.
Liu Ruirui. Experimental study and finite element analysis of residual stress of welded box members with width thickness ratio exceeding the limit[D]. Xi'an: Xi'an University of Architecture and Technology, 2009.

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