Influence of Different Surface Texture Parameters on the Contact Performance of Piston Ring‐Sleeve Friction Pair of Hydraulic Cylinders

Wang, Wen’an; Liu, Zhiqi; Chen, Dongliang; Xie, Zhen; Song, Jing

doi:10.1155/2021/5495995

Cited by 8 publications

(6 citation statements)

References 47 publications

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“…In boundary and mixed lubrication regimes, the surfaces of the friction pair material can be modified by surface texture [4,5], chemical grafting [6,7], ion sputtering [8,9], and other surface modification technologies [10] in order to improve the anti-friction and antiwear abilities of the substrates and the adsorption effect of the lubricant. The textured surface of ultra-high-molecular-weight polyethylene (UHMWPE) reduces the actual contact area between friction pairs, thereby improving the tribological properties of the material surface [11].…”

Section: Lubrication Methodsmentioning

confidence: 99%

Electric Potential Controlled Ionic Lubrication

Wang,

Guo,

Singh

et al. 2024

Lubricants

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Electric potential controlled lubrication, also known as triboelectrochemistry or electrotunable tribology, is an emerging field to regulate the friction, wear, and lubrication performance under charge distribution on the solid–liquid interfaces through an applied electric potential, allowing to achieve superlubrication. Electric potential controlled lubrication is of great significance for smart tunable lubrication, micro-electro-mechanical systems (MEMS), and key components in high-end mechanical equipment such as gears and bearings, etc. However, there needs to be a more theoretical understanding of the electric potential controlled lubrication between micro- and macro-scale conditions. For example, the synergistic contribution of the adsorption/desorption process and the electrochemical reaction process has not been well understood, and there exists a significant gap between the theoretical research and applications of electric potential controlled lubrication. Here, we provide an overview of this emerging field, from introducing its theoretical background to the advantages and characteristics of different experimental configurations (including universal mechanical tribometers, atomic force microscopes, and surface force apparatus/balances) for electric potential controlled lubrication. Next, we review the main experimental achievements in the performance and mechanisms of electrotunable lubrication, especially using ionic lubricants, including electrolyte solutions, ionic liquids, and surfactants. This review aims to survey the literature on electric potential controlled lubrication and provide insights into the design of superlubricants and intelligent lubrication systems for various applications.

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Section: Lubrication Methodsmentioning

confidence: 99%

Electric Potential Controlled Ionic Lubrication

Wang,

Guo,

Singh

et al. 2024

Lubricants

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“…Mold gap and stamping speed can be controlled via conventional parameter adjustment. The friction coefficient may be accurately controlled by designers thanks to surface treatment technologies, [22][23][24] and the methods used in this work. Meanwhile, these technologies need further study and discussion.…”

Section: Experiment-based Comparison Of Molding Quality Before and Af...mentioning

confidence: 99%

Influence and improvement of stamping process parameters on V-shaped clamp forming quality

Hu,

Qiu,

Mei

et al. 2024

Advances in Mechanical Engineering

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Aiming at the problems that a V-shaped clamp is easy to crack, wrinkle, and springback in the stamping process, a method to improve forming quality by setting the best stamping process parameters is put forward in this paper. The stamping process of the V-shaped clamp was simulated by using the software of ABAQUS, which showed that the stamping process parameters, such as friction coefficient, stamping speed, and mold gap, can affect the forming quality. The optimal combination of stamping process parameters was obtained through an orthogonal experiment. Simulation, profile dimensional measurement, and Fuji paper test were conducted to evaluate and examine the quality of V-shaped clamps before and after optimization. According to the findings of the study, the stamping speed is the main factor affecting the simulation results. The comprehensive effect of the maximum thinning rate, maximum thickening rate, and maximum springback is the best with the stamping speed of 10.00 mm·s−1. The ideal specifications for the stamping process are a 0.16 friction coefficient, a 10.00mm·s−1 stamping speed, and a 2.20 mm mold gap. Process parameter modification can greatly increase the dimensional accuracy and mechanical properties of molded parts.

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“…It can be quantitatively described by measuring the distance between the current parameter value and its maximum allowable value. Define vector λ + as the reciprocal of the maximum allowable value for each parameter, as illustrated in Equation (4).…”

Section: Problem Formulationmentioning

confidence: 99%

“…Common issues associated with hydraulic cylinders encompass excessive friction, internal leakage, and external leakage. These problems can be attributed to factors such as wear and tear on the reciprocating seal [1], temperature fluctuations [2], alterations in the properties of the working fluid [3], contaminants, surface texture [4], etc. According to statistics, hydraulic cylinder leakage faults make up over 50% of all crane faults [5].…”

Section: Introductionmentioning

confidence: 99%

Quantitative Fault Diagnostics of Hydraulic Cylinder Using Particle Filter

Zhang,

Vacca,

Gong

et al. 2023

Machines

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Condition-based hydraulic cylinder maintenance necessitates quantitative fault diagnostics. However, existing methods are characterized by either qualitative or limited quantitative capabilities. In this paper, a quantitative fault diagnostic method using a particle filter for hydraulic cylinders is proposed. The problem of quantitative fault diagnostics is formally formulated in a stochastic framework to assess the health/fault state, and an architecture based on joint state-parameter estimation is proposed. Through the establishment and analysis of a nonlinear dynamic model of the hydraulic cylinder, the impact of time-varying parameters on the state variables is revealed. Three fault modes of the cylinder, including friction, internal leakage, and external leakage, are theoretically identified. The proposed method allows for a simultaneous quantitative diagnosis of these three fault modes. The performance of the proposed method is evaluated using meticulously designed experiments. The results demonstrate that the mean absolute percentage errors in the parameter estimations are below 9% (accuracy exceeding 91%), thus validating its feasibility and effectiveness.

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Influence of Different Surface Texture Parameters on the Contact Performance of Piston Ring‐Sleeve Friction Pair of Hydraulic Cylinders

Cited by 8 publications

References 47 publications

Electric Potential Controlled Ionic Lubrication

Electric Potential Controlled Ionic Lubrication

Influence and improvement of stamping process parameters on V-shaped clamp forming quality

Quantitative Fault Diagnostics of Hydraulic Cylinder Using Particle Filter

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