Friction and wear characteristics of linear contact sliding friction pairs under oil-air lubrication

Xie, Xiangyu; Zeng, Zhifeng; Luo, Jun; Xu, Jin

doi:10.1007/s40430-021-03036-y

Cited by 7 publications

(3 citation statements)

References 23 publications

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“…The coefficient of friction began to decline with the generation of grinding debris which can play a certain role in lubrication.The friction coefficient reaches a steady stage with the generation and discharge of debris in a relatively stable state. As illustrated in Figure4a-c, the friction coefficient of C-MoS 2 -PTFE coating is more steady than C-MoS 2 -PTFE coating/4032 aluminum alloy anodic oxide film/Ni-plated coating under 5 N/10 N/15 N loads, and the average friction coefficient is smaller than that of the anodized film as well as the Ni-plated coating[23].…”

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confidence: 94%

Wear Properties of C-MoS2-PTFE Composite Coating Prepared on 4032 Aluminum Alloy

Chen

Zhang

et al. 2022

Lubricants

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A large number of joint friction pairs work during the work of scroll compressors, resulting in high energy consumption and short service life of scroll compressors. To improve the tribological performance of friction pairs of the scroll compressors, the C-MoS2-PTFE (Polytetrafluoroethylene) lubrication coating is prepared through spraying technology on the surface of 4032 aluminum alloy, a common material for scroll compressors. The microstructure of the C-MoS2-PTFE coating was analyzed by X-ray diffractometer (XRD) and scanning electron microscope (SEM), and the wear behavior of the coating under different loads was studied by reciprocating friction and wear testing machine and three-dimensional profiler. The surface of the grinding marks was analyzed by SEM and energy density spectrum (EDS). The performance was compared with the anodized film of 4032 aluminum alloy and the Ni-coated coating of 4032 aluminum alloy. The experimental results show that the C-MoS2-PTFE coating has a dense structure, and the hardness is 35 HV0.1. Under dry friction conditions, the C-MoS2-PTFE coating has excellent wear reduction and wear resistance, and the coefficient of friction and wears rate under different loads are less than those of the anodized film of 4032 aluminum alloy and the Ni-plated coating. The wear mechanisms of C-MoS2-PTFE coating are fatigue wear, adhesive wear, abrasive wear, and oxidation wear under different loads.

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confidence: 94%

Wear Properties of C-MoS2-PTFE Composite Coating Prepared on 4032 Aluminum Alloy

Chen

Zhang

et al. 2022

Lubricants

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“…First, the slippage during the gear meshing process and the rolling between rollers and raceways convert from dry friction to film Lubrication. The friction heat power decreases as while as the friction resistance decreases [4,5,6] . Along with the increase of the lube's volume fraction, the temperature decreases benefiting from increment of the internal heat exchange area and the internal energy transfer efficiency.…”

Section: Introductionmentioning

confidence: 99%

Analysis and simulation of the influence of initial liquid level on lubricating flow state and oil-churning resistance moment of planetary reducer

Wang

Zhang

2023

J. Phys.: Conf. Ser.

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In order to study the influences of the initial liquid level on lube characteristics and oil-churning resistance moment of gear reducer, the heat generating power of one special kind of planet gear reducer under the special working condition is calculated. The fluid temperature at different initial liquid levels is calculated by FEA method. According to the relation between the physical parameters of the lube and the fluid temperature, the corresponding relation between the physical parameters of the lube and the initial liquid level is deduced. Based on the FEA results, the physical parameters of the lube are set to conduct the co-simulation of the oil-churning process of the planetary reducer under different initial liquid levels by MPS method. Depend on the simulation results, the influence of initial liquid level on lubricating flow state and oil-churning resistance moment of planetary reducer is analysed, and the initial liquid level is sifted. These studies provide methods and reference for lubrication medium set in transmission boxes, such as planet gear reducer and so on.

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“…Castor oil used as a lubricant against AISI 4140 steel friction reduced the coefficient of kinetic friction (µk) by 76% compared to the comparison oil base. Despite its high wear, castor oil can be used as a biolubricant in systems susceptible to high friction levels (Xie et al , 2021). The unique properties of plants have great development value in tribology.…”

Section: Introductionmentioning

confidence: 99%

Exploring the frictional characteristics of kelp liquid as an environmentally friendly lubricant

Yang

Wang

et al. 2022

ILT

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Purpose Kelp is widely productive and inexpensive. The purpose of this study is to explore kelp liquid (KL) as an environment-friendly water-based lubricant, which is expected to replace some industrial lubricants and protect the environment while satisfying lubricating performance. Design/methodology/approach In this experiment, the soaked kelp was broken up by a wall-breaking machine to get the KL by a centrifuge. Elements and crystal structure of KL samples were characterized by X-ray photoelectron spectroscopy, X-ray diffraction and Raman spectra. The friction test is carried out by the relative movement of the polyethylene ball and the aluminum disk on the friction tester. Findings Friction experiments showed that 0.1 Wt.% KL has a good lubrication effect, and the average coefficient of friction is 0.063 under the condition of applying a 10 N load and moving at a speed of 2.0 cm/s. KL has good thermal conductivity with excellent cooling effect and high intermolecular force which makes high viscosity for excellent lubricating behavior, at the meantime molecules in solution remain stable which shows an excellent dispersibility. Originality/value At present, the research on kelp mainly focuses on its medicinal value and abundant nutritional value, and the research on its lubrication effect is less. Based on this situation, this paper explored the characteristics of KL as an environmentally friendly lubricant, which is expected to be used as a green cutting fluid.

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Friction and wear characteristics of linear contact sliding friction pairs under oil-air lubrication

Cited by 7 publications

References 23 publications

Wear Properties of C-MoS2-PTFE Composite Coating Prepared on 4032 Aluminum Alloy

Wear Properties of C-MoS2-PTFE Composite Coating Prepared on 4032 Aluminum Alloy

Analysis and simulation of the influence of initial liquid level on lubricating flow state and oil-churning resistance moment of planetary reducer

Exploring the frictional characteristics of kelp liquid as an environmentally friendly lubricant

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