Experiment and anti-scuffing design for aviation gear scuffing based on material, surface treatment and lubricant combinations

Jinxiao CHEN; Peitang WEI; Yanjun LI; Huaiju LIU; Caichao ZHU

doi:10.7527/S1000-6893.2024.30777

ACTA AERONAUTICAET ASTRONAUTICA SINICA >

2025 , Vol. 46 >Issue 4: 430777 - 430777

DOI: https://doi.org/10.7527/S1000-6893.2024.30777

Material Engineering and Mechanical Manufacturing

Experiment and anti-scuffing design for aviation gear scuffing based on material, surface treatment and lubricant combinations

Jinxiao CHEN ,
Peitang WEI ,
Yanjun LI ,
Huaiju LIU ,
Caichao ZHU

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^1.Chongqing University，The State Key Laboratory of Mechanical Transmissions，Chongqing 400044，China
^2.AECC Sichuan Gas Turbine Establishment，Chengdu 610500，China

E-mail： peitangwei@cqu.edu.cn

Received date: 2024-06-03

Revised date: 2024-06-26

Accepted date: 2024-07-24

Online published: 2024-08-26

Supported by

National Natural Science Foundation of China(U2141247)

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Abstract

Gear scuffing occurring under high-temperature， high-speed， and heavy-load can significantly impair the performance of aviation engines. However， there is a lack of test data on the gear scuffing load-carrying capacity， and insufficient anti-scuffing design under the combined influences of materials， surface treatment and lubricants. This study investigates the effects of different combinations of materials （9310， 18Cr2Ni4WA， 16Cr3NiWMoVNbE）， surface treatments （grinding， shot peening， Micro-shot peening， dual shot peening， barrel finishing， dual shot peening + barrel finishing） and lubricants （4450， 555， 4106， 4010， 2197， 387， 560， Mobil jet oil Ⅱ） on the scuffing load-carrying capacity， and proposes an evaluation method based on the PVT limit （involving gear contact pressure P， sliding velocity V， and lubricant temperature T）. The results indicate that the tribological system composed of 16Cr3NiWMoVNbE， barrel finishing treatment， and 555 lubricant （containing high-performance EP additives） exhibits relatively superior anti-scuffing performance， and its PVT limit is 39 721 MPa·（m/s）^0.51·℃^0.45. Additive type， lubricant viscosity， and surface roughness are identified as three main factors affecting gear scuffing within the parameter framework， accounting for 28.7%， 23.6%， and 14.9%， respectively. An anti-scuffing design formula was fitted using the Ordinary Least-Squares （OLS） model， with an average error of only 4.99% compared to experimental results， providing a theoretical support for gear anti-scuffing design.

Key words： aviation gear; scuffing test; PVT limit; anti-scuffing design; surface treatment

Cite this article

Jinxiao CHEN , Peitang WEI , Yanjun LI , Huaiju LIU , Caichao ZHU . Experiment and anti-scuffing design for aviation gear scuffing based on material, surface treatment and lubricant combinations[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2025 , 46(4) : 430777 -430777 . DOI: 10.7527/S1000-6893.2024.30777

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