Contact Fatigue Strength of 20CrMnMo Carburized and Quenched Gears

Yi Bingyue; Chen Jian; Zhou Jianliang

doi:10.13374/j.issn1001-053x.1992.05.007

Volume 14 Issue 5

Oct. 2021

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Yi Bingyue, Chen Jian, Zhou Jianliang. Contact Fatigue Strength of 20CrMnMo Carburized and Quenched Gears[J]. Chinese Journal of Engineering, 1992, 14(5): 530-536. doi: 10.13374/j.issn1001-053x.1992.05.007

Citation:

Yi Bingyue, Chen Jian, Zhou Jianliang. Contact Fatigue Strength of 20CrMnMo Carburized and Quenched Gears[J]. Chinese Journal of Engineering, 1992, 14(5): 530-536. doi: 10.13374/j.issn1001-053x.1992.05.007

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Contact Fatigue Strength of 20CrMnMo Carburized and Quenched Gears

doi: 10.13374/j.issn1001-053x.1992.05.007

Department of Mechanical Engineering

Received Date: 1991-10-11
Available Online: 2021-10-18

Abstract

Abstract

Using power circulating type gear tester, 33 pairs 20CrMnMo carburized and quenched gears, having tooth surface hardness HRC62, were tested to investigate the contact fatigue life. The test results were treated by statistical methods and plotted as R-S-N curve. The contact strength limits σ_Hlim were 1 571.6 N/mm² with reliability 0.99 at 5×10⁷ cystes. By using scanning electron microscope etc., the texture of tooth surface damage were described and the mechanism of failures was investigated.
- carburized and quenched gear,
- contact fatigue strength,
- tooth surface damage