Analysis of the gear shaft broken teeth of the reducer

Dong Xuejiao

doi:10.7513/j.issn.1004-7638.2023.03.029

Volume 44 Issue 3

Jun. 2023

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Article Navigation > IRON STEEL VANADIUM TITANIUM > 2023 > 44(3): 191-196

Zheng Zhuo, Zhou Dali, Yu Chong, Hu Chi, Zhao Xin. Influence of Magnesium Addition on Preparation of Nano-TiC Powder[J]. IRON STEEL VANADIUM TITANIUM, 2012, 33(2): 20-25.

Citation:

Dong Xuejiao. Analysis of the gear shaft broken teeth of the reducer[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 191-196. doi: 10.7513/j.issn.1004-7638.2023.03.029

Zheng Zhuo, Zhou Dali, Yu Chong, Hu Chi, Zhao Xin. Influence of Magnesium Addition on Preparation of Nano-TiC Powder[J]. IRON STEEL VANADIUM TITANIUM, 2012, 33(2): 20-25.

Citation:

Dong Xuejiao. Analysis of the gear shaft broken teeth of the reducer[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 191-196. doi: 10.7513/j.issn.1004-7638.2023.03.029

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Analysis of the gear shaft broken teeth of the reducer

doi: 10.7513/j.issn.1004-7638.2023.03.029

Dong Xuejiao^{1, 2
,}

1. Pangang Group Research Institute Co., Ltd, State Key Laboratory of Vanadium and Titanium Resources
2.
Comprehensive Utilization, 617000, Sichuan, China; Sichuan Panyan Testing Technology Co., Ltd, Panzhihua, 617000, Sichuan, China

Received Date: 2021-03-03
Publish Date: 2023-06-30

Abstract

Abstract

Aiming at the broken phenomenon of the gear shaft in a reducer, the chemical composition of the gear shaft was analyzed; the internal microstructure of the gear shaft and the causes of defects were studied by metallographic analysis technology. The fracture morphology was observed by scanning electron microscope, and the hardened layer depths of the tooth were calculated by the hardness calculation method, and the carburized and quenched hardened layers on the tooth top were mathematically verified. The results show that the high temperature of the gear during quenching and heating leads to the appearance of coarse martensite and network carbide in the gear. There is a serious internal oxidation phenomenon on the tooth surface, resulting in the embrittlement of the tooth material, and then intergranular cracking and blocks falling. In addition, the phenomenon of broken teeth occurs under the synergistic effect of the eccentric loads and low hardness.
- gear shaft,
- internal oxidation,
- material embrittlement,
- intergranular crack

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References(6)

References

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