Optimization of contact pressure profile for performance improvement of a rotary elastomeric seal operating in abrasive drilling environment

Sui, Ping C.; Anderle, Seth

doi:10.1016/j.wear.2011.02.021

Cited by 18 publications

(13 citation statements)

References 7 publications

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“…The damage produced by contaminants in the sealing structure induces the seal failure of the hydraulic servo-actuator [3]. This damage typically occurs between the seal ring and the piston rod.…”

Section: Tribological Performances Of Ag-dlc Filmsmentioning

confidence: 99%

“…A hydraulic servo-actuator is a critical aircraft control device whose sealing performance directly affects the sensitivity and accuracy of the aircraft flight attitude [1,2]. Foreign intrusive particles in hydraulic oil may induce the vulnerable friction pair wear and the seal leak, and they may even lead to oil spill accidents [3,4]. Film modification thereon is an advisable approach to improve the tribological performances for the friction pair [2,5].…”

Section: Introductionmentioning

confidence: 99%

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Attempting AG-Doped Diamond-Like Carbon Film to Improve Seal Performance of Hydraulic Servo-Actuator

Zhao

Zhang

et al. 2020

Materials

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A hydraulic servo-actuator is a critical aircraft control device whose sealing performance directly affects the sensitivity and accuracy of the aircraft flight attitude. Foreign intrusive particles in hydraulic oil may induce the vulnerable friction pair wear and the seal leak; they may even lead to oil spill accidents. This work attempts to conduct a systematical investigation of Ag-doped diamond-like carbon (Ag-DLC) film to improve the seal performance. The failure of the servo-actuator was analyzed. Then, a series of Ag-DLC films was deposited; the structure and combined tribological performances of the Ag-DLC films were investigated. The results show that the intensity of the Ag (111) crystal face in the films increases with an increase of Ag content. The hardness, intrinsic stress, frictional coefficient, and wear rate of the films tend to decrease with the amount of doping metal. The a:C-Ag10.5% film exhibits optimal combined properties. The Ag doping makes the film toughness improve; both soft Ag particles and a graphitized top layer act as solid lubricants. Our findings may offer a novel approach to make DLC film applicable for improving the seal performance of hydraulic servo-actuator. Based on the experimental data, a mechanism behind the film modification of Ag-DLC film is also revealed.

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Section: Tribological Performances Of Ag-dlc Filmsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Attempting AG-Doped Diamond-Like Carbon Film to Improve Seal Performance of Hydraulic Servo-Actuator

Zhao

Zhang

et al. 2020

Materials

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“…However, very few factors have been considered for the structure optimum design of the cone bit seal nowadays. For the seal optimum design, the artificial neural network [8,9], Taguchi method [10] and finite element analysis [11] have been recognized as strong tools. However, due to the structure and special environment of the bit seal, the numerical analysis of multiple objectives remains complex.…”

Section: Fig 2 Seal Installation Position On the Cone Bitmentioning

confidence: 99%

Experimental and Optimization Design of Offshore Drilling Seal

Zhang

Chang

et al. 2017

Polish Maritime Research

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“…In drilling engineering, rubber seals are widely used to prevent drill cuttings from intruding into the seal chamber of the drilling tools, such as the roller bit, rotation guide tools, devices of measurement while drilling, etc. [ 1 , 2 ]. However, the working performance of the downhole seal is not satisfactory.…”

Section: Introductionmentioning

confidence: 99%

Effect of Thermal Degradation of FKM on Three-Body Abrasion under Dry Sliding: Severe Damage Led by the Particle Detention

et al. 2021

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Both the high temperature and particle environment at the downhole greatly aggravate the abrasive wear and shorten the service life of the fluororubber (FKM) seal seriously in drilling engineering. At present, there is less awareness of the tribological behavior of seals in such complex working conditions. In this work, the abrasive wear performance of the thermally degraded FKM seal was tested in the form of simulating the intrusion of abrasive particles into the interface. Results show that the wear of both rubber seals and metal counterparts is exacerbated. Through the analysis of the wear scar morphology and friction coefficient, it is revealed that more abrasive caves scatter on the surface due to the mechanical degradation of the FKM. These abrasion caves reduce the tendency of particles to escape from the caves and prolong the abrasive action. Furthermore, the abrasion cave alters the particle motion from sliding to rolling, which leads to more caves generated on the surface of the hard tribo-pair. These results enhance the understanding of the abrasive wear for FKM seals and hopefully contribute to the promotion of seals used in hot abrasive particle environments.

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Optimization of contact pressure profile for performance improvement of a rotary elastomeric seal operating in abrasive drilling environment

Cited by 18 publications

References 7 publications

Attempting AG-Doped Diamond-Like Carbon Film to Improve Seal Performance of Hydraulic Servo-Actuator

Attempting AG-Doped Diamond-Like Carbon Film to Improve Seal Performance of Hydraulic Servo-Actuator

Experimental and Optimization Design of Offshore Drilling Seal

Effect of Thermal Degradation of FKM on Three-Body Abrasion under Dry Sliding: Severe Damage Led by the Particle Detention

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