Tribological performance of steel guideway with biomimetic hexagonal micro-textures

Zhang, Yun; Deng, Jianxin; Meng, Ying; Yue, Hongzhi

doi:10.1080/02670844.2020.1742469

Cited by 19 publications

(18 citation statements)

References 34 publications

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“…While the texture ratio is high, the lubricant spreading speed will be low and the storage amount between the friction interfaces is small, which also results in a high COF. In additional, This hexagonal orientation friction properties are consistent with the the results of Yun Zhang et al 21 and Yinghui Zhong et al 35 Their results show that the bearing capacity in the TV direction is larger than that in the TP direction, potentially resulting in a reduced COF.…”

Section: Resultssupporting

confidence: 88%

Laser hexagonal texture on surface of Ti6Al4V for the improvement of fluid spreadability and tribological properties

Liu

Yuan

Jiang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part J:

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The joint capsule removal after artificial joint replacement surgery have led to improper lubrication, causing the pair to wear out quickly and reducing the joint lifespan. In this paper, laser processing and chemical corrosion were used to prepare a hexagonal convex texture on the surface of titanium alloy (Ti6Al4V). After etching and laser polishing, SEM images indicated the presence of secondary micro-nano textures in the grooves around the hexagonal texture, and the formation of anatase oxides on the surface, resulting in an increase of the surface energy and a very small contact angle (CA). The surfaces’ CA increases with the texture ratio, and the surface is super-hydrophilic when the texture ratio is less than 0.84. Furthermore, the effect of texture parameters and directions are studied by using UHMWPE and Ti6Al4V as friction pairs and simulated body fluid as lubricant. The COF is 0.068 with 0.84 area ratio, which is 51.4% lower than the original surface. The wear rate of UHMWPE on the textured surface decreases by 74.5% after two hours of tribological testing. In addition, high speed camera images and calculation results proved that creating grooves can promote fluid distribution on the textured surface. The surface texture on titanium alloy results in a significant COF and wear reduction, extending the service life of artificial joints.

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Section: Resultssupporting

confidence: 88%

Laser hexagonal texture on surface of Ti6Al4V for the improvement of fluid spreadability and tribological properties

Liu

Yuan

Jiang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…Equation (2) shows that the modification of the guideway can be achieved by controlling the dwell time.…”

Section: Optimization Of Combined Processingmentioning

confidence: 99%

“…Steel is cheap and is extensively used as guideway material, but the machining accuracy is affected by force and thermal deformation during the processing of steel guideways. Therefore, steel guideways are rarely used on ultra-precision moving platforms [ 2 ]. Wang [ 3 ] carried out the experimental analysis on trial production of 45 steel inlaid guideways.…”

Section: Introductionmentioning

confidence: 99%

Highly Accurate Digital Processing of Large Stroke Guideway with an Optical Material-Corning Code 7972

2021

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Currently, meter-long guideways rarely achieve an accuracy of dozens of nanometers due to processing difficulties such as the material and the edge effect. In this paper, we focus on this problem and propose a set of optimization processing methods to cope with it. In the grinding stage, a grinding tool is designed to improve the reciprocating processing and address the problem of warping; in the polishing stage, three different processes are compared, and the combination of magnetorheological finishing technology and the polyurethane disc technology process is purposed to reduce the polishing cycle and improve the surface figure accuracy. Moreover, through the combined process of magnetorheological finishing and smoothing, the edge effect and medium- and high-frequency error are essentially suppressed. The meter-long guideway is achieved with an accuracy of dozens of nanometers. Although the sizes of surface A/C and B/D are 1000 mm × 240 mm and 1000 mm × 160 mm, the surface figures are 20.33 nm, 22.78 nm, 39.23 nm and 26.58 nm RMS (Root Mean Square), respectively. The nanometer accuracy guideway is critical to an ultra-precision machine tool. Finally, the X-axis straightness of the profile measurement system formed by the guideway reaches 200 nm/600 mm.

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“…But later application showed that micro bulges’ wear resistance was poor. Deng Jianxin and his colleagues fabricated micro grooves (Yue et al , 2019) and hexagonal textures (Zhang et al , 2020) on guideway surface in a simplified guideway apparatus. In Yue’s study, they found textures enhance resistance of stick-slip phenomenon by improving oil film retainability.…”

Section: Introductionmentioning

confidence: 99%

Effect of laser-textured micro dimples on inhibition of stick-slip phenomenon of sliding guideway

Yang

2022

ILT

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Purpose This study aims to investigate the efficacy of micro dimple in inhibiting stick-slip phenomenon on the sliding guideway. Design/methodology/approach In this study, micro-dimples were fabricated by laser on surfaces of steel disk and guideway. The disks and guideways were respectively performed pin-on-disk tribological tests and working condition experiments to study differences in lubrication condition and friction stability between textured and untextured surfaces. Findings Micro-dimples help reduce critical sliding speed that allows contact surfaces to enter in hydrodynamic lubrication regime. This increases hydrodynamic lubrication range and narrows speed range where stick-slip phenomenon can occur, enhancing sliding guideway’s adaptability for broader working conditions. Furthermore, friction stability on the textured surface improved, lowering the occurrence possibility of stick-slip phenomenon. Finally, difference between static and kinetic frictions on the textured surface is lower relative to the untextured surface, which decreases the critical velocity when the stick-slip phenomenon occurs. Originality/value The results indicate that laser-textured micro-dimples are significantly conducive to inhibit stick-slip phenomenon, thus providing smoother movement for the guideway and eventually increasing precision of the machine.

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Tribological performance of steel guideway with biomimetic hexagonal micro-textures

Cited by 19 publications

References 34 publications

Laser hexagonal texture on surface of Ti6Al4V for the improvement of fluid spreadability and tribological properties

Laser hexagonal texture on surface of Ti6Al4V for the improvement of fluid spreadability and tribological properties

Highly Accurate Digital Processing of Large Stroke Guideway with an Optical Material-Corning Code 7972

Effect of laser-textured micro dimples on inhibition of stick-slip phenomenon of sliding guideway

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