Causean analysis on longitudinal cracking of 35CrMo steel cylinder pin

doi:10.13251/j.issn.0254-6051.2021.04.046

Abstract

Abstract: Longitudinal cracks were found in the 35CrMo steel cylinder pin produced by a standard parts factory during tensile sample manufacturing for re-examination. The causes of the cracking were found out by analyzing the chemical composition, microstructure, crack and fracture morphology of the cylinder pin. The results show that the cracking of the 35CrMo steel cylinder pin is the longitudinal crack occurred during quenching. The cracking is caused by slightly overheating and coarse inclusions in longitudinal direction. This kind of problem can be avoided by adjusting heat treatment process and selecting pure raw materials.

Key words: 35CrMo steel cylinder pin, longitudinal cracking, residual stress, quenching

CLC Number:

TG141

Zhou Yongqiang. Causean analysis on longitudinal cracking of 35CrMo steel cylinder pin[J]. Heat Treatment of Metals, 2021, 46(4): 239-242.

[1]	Fu Xibin, Chen Zihao, Zhang Ke, Zhao Shiyu, Sun Xinjun, Zhu Zhenghai, Liang Xiaokai, Yong Qilong. Effect of quenching temperature on microstructure and mechanical properties of high Ti low alloy wear-resistant steel [J]. Heat Treatment of Metals, 2022, 47(4): 122-127.
[2]	Huo Jinyuan, Chen Guojun, Zheng Dexin. Induction hardening process of internal spline in tulip of constant speed drive shaft [J]. Heat Treatment of Metals, 2022, 47(4): 178-181.
[3]	Liu Wenbin, Qiao Longyang, Pan Xinyu, Cheng Ge, Li Aina, Pei Xinjun. Effect of quenching temperature on microstructure and properties of M390 powder metallurgical stainless steel for chopping knives and scissors [J]. Heat Treatment of Metals, 2022, 47(4): 189-195.
[4]	Yang Jie, Wang Xi, Zhou Jie, Wu Jianxiang, Qu Zhiyuan, Dai Heping, Peng Haijun. Formation mechanism of quenching cracks in branch-shaped structure of steering knuckle forgings [J]. Heat Treatment of Metals, 2022, 47(4): 263-267.
[5]	Sun Guojin, Gao Zhiwen, Cui Xiaoyan, Gao Kekun, Sun Li. Effect of dual liquid quenching on microstructure and hardness of 9Cr2Mo steel roller [J]. Heat Treatment of Metals, 2022, 47(3): 88-91.
[6]	Xiong Jinsheng, Ning Jing, Su Jie, Jiang Qingwei. Effect of quenching temperature on microstructure and properties of a low cobalt secondary hardening steel [J]. Heat Treatment of Metals, 2022, 47(3): 92-96.
[7]	Shi Na, Liu Weiming, Liu Yonggang, Zhan Hua, Cui Lei, Pan Hongbo. Effects of Si content and quenching temperature on microstructure and properties of Q&P steel [J]. Heat Treatment of Metals, 2022, 47(3): 130-135.
[8]	Wu Fangjun, Deng Xiaoyun, Jie Xiaohua, Zheng Kaihong, Luo Zhichao. Thermal fatigue properties of H13 and Dievar steels for hot-work die [J]. Heat Treatment of Metals, 2022, 47(3): 165-172.
[9]	Zhu Ran, Xie Dihui, Zhu Shuaiguang, Zhang Yongkang. Effect of high frequency Nd∶YLF flat-top laser shock on surface stress and micro-deformation of TC6 titanium alloy [J]. Heat Treatment of Metals, 2022, 47(3): 204-209.
[10]	Xia Yunzhi, Yan Jiasen, Yu Xingfu, Wei Yinghua, Yang Wenwu, Liu Yujian. Analysis of outer ring dimension and stress variation characteristics of 8Cr4Mo4V steel bearing based on working temperature [J]. Heat Treatment of Metals, 2022, 47(3): 245-251.
[11]	Cui Ding, Che Yongping. Distortion control method of parts with internal spline [J]. Heat Treatment of Metals, 2022, 47(3): 252-256.
[12]	Hu Fangzhong, Yang Shaopeng, Jin Guozhong, Hu Naiyue, Wang Kaizhong, Yang Zhiqiang, Chen Shijie. Effect of quenching temperature on microstructure evolution and mechanical properties of Nb microalloyed gear steel 18CrNiMo7-6 [J]. Heat Treatment of Metals, 2022, 47(2): 105-111.
[13]	Liu Yue, Han Shun, Li Yong, Wang Chunxu, Yan Xiaohong, Li Jianxin. Effect of quenching temperature on microstructure and mechanical properties of GE1014 ultra-high strength steel [J]. Heat Treatment of Metals, 2022, 47(2): 125-129.
[14]	Chen Linheng, Tang Qibo, Wu Huibin, Zhao Jinbin, Bo Feihu. Effect of quenching process on microstructure and mechanical properties of medium manganese steel bearing Ni [J]. Heat Treatment of Metals, 2022, 47(2): 159-163.
[15]	Shi Youjie, Li Yonggang, Li Wenhui, Wang Xingfu. Effect of cryogenic treatment on surface properties of TC4 titanium alloy [J]. Heat Treatment of Metals, 2022, 47(2): 183-187.

Causean analysis on longitudinal cracking of 35CrMo steel cylinder pin

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments