Improved Wear Behavior of Cylindrical Roller Thrust Bearings by Three‐Beam Laser Interference

Rosenkranz, Andreas; Stratmann, Andreas; Gachot, Carsten; Burghardt, Gero; Jacobs, Georg; Mücklich, Frank

doi:10.1002/adem.201500320

Cited by 32 publications

(22 citation statements)

References 40 publications

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“…This is because the wear behavior of REBs is very complex and the textures with small diameters and depths are difficult to manufacture. Consequently, there are few publications on the tribological performance of textured REBs, and the influence of grooves on the wear behavior of CRTBs has not been reported yet (Rosenkranz et al, 2016). Therefore, based on previous works (Sun et al, 2017;Sun et al, 2020), a fiber laser marking system (PL100-30W, China) was used to process grooves on the shaft washers of 81107TN bearings (YFB, Changzhou, China) with different groove dimensions.…”

Section: Introductionmentioning

confidence: 99%

Influence of Groove Dimensions on the Tribological Behavior of Textured Cylindrical Roller Thrust Bearings under Starved Lubrication

Long

Zhao

Jin

et al. 2021

ILT

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Purpose The purpose of this paper is to reveal the friction and wear performance of grooves textured cylindrical roller thrust bearings with different groove dimensions under starved lubrication. Design/methodology/approach The groove dimensions include: width of grooves (WOG, 50 µm, 100 µm and 150 µm), depth of grooves (DPOG, 7 µm, 11 µm and 15 µm) as well as groove deflection angle (GDA, 45°). A fiber laser marking system was used to prepare groove patterns on the raceways of shaft washers. The friction and wear properties of grooves textured bearings were researched through a vertical universal wear test rig using a customized roller bearing tribo-pair under starved lubrication. Static finite element analyses were conducted to reveal their surface stresses. Through the comprehensive comparison and analyses, the influence mechanism of grooves on the tribological behavior of cylindrical roller thrust bearings was proposed and discussed. Findings When grooves textured bearings run under starved lubrication, their average coefficients of friction (COFs) and wear losses are all significantly reduced and much lower than those of smooth group. The influence of DPOG on the COF curves is significant, while the influence of WOG on the COF curves is a little weak. The influence of groove dimensions on the surface stresses of grooves textured bearings is weak, whether the WOG or DPOG. In this work, when the WOG is 100 µm and the DPOG is 15 µm, its average COF and wear loss are both the lowest, 0.0066 and 0.61 mg, respectively. Compared with the data of smooth group, its friction coefficient is reduced by 75.3% and its mass loss is reduced by 95.8%, showing a significant improvement in this condition. Originality/value This work can provide a valuable reference for the raceway design and reliability optimization of rolling element bearings.

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Section: Introductionmentioning

confidence: 99%

Influence of Groove Dimensions on the Tribological Behavior of Textured Cylindrical Roller Thrust Bearings under Starved Lubrication

Long

Zhao

Jin

et al. 2021

ILT

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“…According to previous studies, the combined use of LST and anti-wear tribofilm reduces sliding induced damage [7,[23][24][25][26]. Rosenkranz et al tested and confirmed the enhancement of the frictional performances on thrust roller bearings with dot patterns [12,13]. Hsu et al have found a fully formed ZDDP tribofilm at the topographical maximum of a periodic laser pattern, indicating an enhancement of the formation of ZDDP tribofilm by direct laser interference patterning (DLIP) [27].…”

Section: Introductionmentioning

confidence: 96%

“…Laboratory tests have demonstrated promising improvements to tribological performance. LST has been evaluated and shown to decrease wear and friction in industrial applications such as roller bearings [13], ball bearings [14], valves [15], and pistons [16]. In case of conformal contacts, many studies have highlighted positive results by texturing with the area coverage between 10%-30%.…”

Section: Introductionmentioning

confidence: 99%

Does laser surface texturing really have a negative impact on the fatigue lifetime of mechanical components?

et al. 2021

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Laser surface texturing (LST) has been proven to improve the tribological performance of machine elements. The micro-scale patterns manufactured by LST may act as lubricant reservoirs, thus supplying oil when encountering insufficient lubrication. However, not many studies have investigated the use of LST in the boundary lubrication regime, likely due to concerns of higher contact stresses that can occur with the increasing surface roughness. This study aims to examine the influence of LST on the fatigue lifetime of thrust rolling bearings under boundary lubrication. A series of periodic patterns were produced on the thrust rolling bearings, using two geometrically different designs, namely cross and dimple patterns. Base oil ISO VG 100 mixed with 0.05 wt% P of zinc dialkyldithiophosphate (ZDDP) was supplied. The bearings with cross patterns reduce the wear loss by two orders of magnitude. The patterns not only retain lubricant in the textured pockets but also enhance the formation of an anti-wear tribofilm. The tribofilm generation may be improved by the higher contact stresses that occur when using the textured surface. Therefore, in contrast to the negative concerns, the ball bearings with cross patterns were instead found to increase the fatigue life by a factor of three.

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“…For instance, these well-defined and highly-oriented structures fabricated at the micron and sub-micron scale on surfaces of modern industrial products enable a clear innovation potential to improve products performance significantly [ 3 ]. This upgrade concerns a wide range of applications, such as antifouling [ 4 ], wetting control, [ 5 , 6 ], tribology [ 7 , 8 , 9 , 10 ], electrical conductivity improvement [ 11 ], cell adhesion [ 12 ], as well as surface optical appearance alteration [ 13 , 14 ]. However, the reproduction of these versatile surface structures represents one of the most significant technical challenges today due to their complexity.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Optimum Process Parameters Fabricated by Direct Laser Interference Patterning Based on Central Composite Design

et al. 2020

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In this study, we report on the optimization of the direct laser interference patterning process by applying the design of experiments approach. The periodic line-like microstructures of a 8.50 µm spatial period were fabricated by a two-beam interference setup with nanosecond laser pulses, varying laser fluence, pulse overlap, and hatch distance. Central composite design with three factors and five levels was implemented to optimize the required number of experiments. The experimental and numerical results show the impact of various structuring process parameters on surface uniformity. The responses measured are the structure height, height error, and waviness of the pattern. An analysis of the microstructures on the patterned surface was conducted by confocal microscopy and scanning electron microscopy. A 3D-characterization method based on morphological filtering, which allows a holistic view of the surface properties, was applied, and a new qualification scheme for surface microstructures was introduced. Empirical models were also developed and validated for establishing relationships between process parameters and performance criteria. Multi-objective optimization was performed to achieve a minimal value of structure height errors and waviness.

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Improved Wear Behavior of Cylindrical Roller Thrust Bearings by Three‐Beam Laser Interference

Cited by 32 publications

References 40 publications

Influence of Groove Dimensions on the Tribological Behavior of Textured Cylindrical Roller Thrust Bearings under Starved Lubrication

Influence of Groove Dimensions on the Tribological Behavior of Textured Cylindrical Roller Thrust Bearings under Starved Lubrication

Does laser surface texturing really have a negative impact on the fatigue lifetime of mechanical components?

Prediction of Optimum Process Parameters Fabricated by Direct Laser Interference Patterning Based on Central Composite Design

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