The flow characteristics of solid particles used as additives for lubricants in the point contact area

Sui, Tianyi; Song, Biao; Zhang, Feng; Chen, Yuanyuan; Yan, Shuai; Wang, Anying; Ding, Mei

doi:10.1039/c7ra11313g

Cited by 3 publications

(3 citation statements)

References 24 publications

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“…The details of worn areas of the cutting tool show the wear mechanism and its formation on the active tool surface. Mostly, the smoother worn areas indicate the diffusion wear occurred due to the transformation of atoms to a low-intensity region [42]. The other types of wears like abrasive, attrition occurs on tool surface be influenced by the effectiveness of lubricant applied.…”

Section: Tool Wearmentioning

confidence: 99%

Performance evaluation of novel developed biodegradable metal working fluid during turning of AISI 420 material

Nune

Chaganti

2020

J Braz. Soc. Mech. Sci. Eng.

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In the present scenario, metalworking fluids or cutting fluids are contributing a significant amount among the consumables used in the machining industry. Most of the industries use oil-based cutting fluids, which may cause skin and respiratoryrelated health issues to workers when they are exposed for longer hours. These limitations lead to developing non-oil-based novel cutting fluids to the industry. In this work, the biodegradability performance of newly developed cutting fluid was measured and compared with commonly used oil-based cutting fluid by the industries. Also, the performance of newly developed cutting fluid was investigated in the machining of AISI 420 stainless steel turbine blade material with an uncoated carbide tool. To circulate and recycle the developed cutting fluid at the machining zone, an experimental setup was developed. The developed cutting fluid performance was estimated over dry and oil-based cutting fluid environment conditions. The experiments were designed based on Taguchi L 27 orthogonal array while keeping the material removal rate as constant at 668 mm 3 s −1. The control factors were cutting environment, depth of cut, feed, and cutting speed. An optimal control parameter combination for minimal surface roughness of 0.31 μm, tool wear 18.7 μm, and temperature 178 °C was obtained. This study is expected to deliver a scientific path toward the novel development of non-oil-based cutting fluids for enhancing the machining quality and safety.

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Section: Tool Wearmentioning

confidence: 99%

Performance evaluation of novel developed biodegradable metal working fluid during turning of AISI 420 material

Nune

Chaganti

2020

J Braz. Soc. Mech. Sci. Eng.

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“…The use of solid particles as lubricant additives is increasing in modern lubricant formulations due to their effects on friction and wear [9]. The behaviour of particles with different average diameter in combination with a constant surface roughness of sliding partners is shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Application of CaCO<sub>3</sub> as Anti-Friction Lubricant Additive to Improve Robustness in Sheet Metal Forming of High-Strength Aluminum

Arinbjarnar,

Schell,

Nielsen

2024

Tribology Online

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High-strength aluminum is a good candidate for use in light-weighting applications, but forming it is difficult due to its low formability. Elevated temperatures are therefore necessary to improve formability, but this reduces lubricant performance. The use of calcium carbonate (CaCO 3 ) as a lubricant additive in warm-and hot-forming of high-strength aluminum is evaluated by strip-drawing tests at room temperature, 225°C and 425°C. Further, the influence of tool surface roughness on the performance of the particles in reducing friction is evaluated. Lastly, the particle-additivated oil is compared to fully formulated, commercially available warm-and hot forming oils. The results show that CaCO 3 particles are suitable for improving tribo-systems in warm-and hot-forming of aluminum, and that they can robustify processes where preparation and maintenance of tool surfaces is difficult as the tribo-system is less sensitive to the tool surface. The performance of the particle-additivated oil was similar to the commercial lubricants at room temperature and 225°C, but was worse at 425°C. However, due to the low cost and effort necessary to prepare the particle-additivated oil, it is a promising alternative to existing lubricant additives.

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“…The roughness of the surfaces in lubricated contact is studied in turn in order to deduce the disturbance of the lubricating film thickness [14][15][16][17][18], and also in this axis [19] reports new updated film parameter, which takes into account the elastohydrodynamic lubrication effects induced by surface irregularities at the microscopic scale (micro-EHL). The consequences of particle entrapment have been analysed theoretically and experimentally in numerous works [20][21][22][23], and extensive research has been carried out on surface indentation, wear, scratching, frictional heating, acoustic emission (noise), scratching and overall reduction in the remaining life of contacts.…”

Section: Introductionmentioning

confidence: 99%

Application of artificial neural networks for the prediction of the service conditions of an elastohydrodynamic EHL contact in the presence of solid pollutant

Mattallah,

Kelaiaia,

Louahem M'Sabah

et al. 2024

Diagnostyka

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Lubricated mechanical mechanisms operate under service conditions influenced by several environmental parameters, and their lifetimes may be threatened due to inappropriate use or by the presence of solid contaminants. The objective of this work is to study the effect of three operating parameters, namely: rotational speed 𝑉, load 𝑄 and kinematic viscosity 𝜈 in the presence of three sizes of solid contaminants 𝑇, on the degradation of an EHL contact, to predict the ranges of effects that may lead to the damage of the contacting surfaces. In our investigation, an experimental design of nine trials is used to combine four factors with three levels each to accomplish the experimental investigation. Artificial neural network regression and the desirability function were used for the interpretation and modelling of the responses, which are: wear 𝑊, arithmetic mean height 𝑅𝑎, total profile height 𝑅𝑡 and maximum profile height 𝑅𝑧. From these methods we observed that the sand grain sizes have a significant impact on the wear 𝑊 and the roughness 𝑅𝑎, but that viscosity has the primary influence on the variation of the roughnesses 𝑅𝑡 and 𝑅𝑧. We also found that the quality of the predicted models is very good, with overall determination coefficients of 𝑅 2 learning = 0.9985 and 𝑅 2 validation = 0.9996. Several levels of degradation depending on the operating conditions are predicted using the desirability function.

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The flow characteristics of solid particles used as additives for lubricants in the point contact area

Cited by 3 publications

References 24 publications

Performance evaluation of novel developed biodegradable metal working fluid during turning of AISI 420 material

Performance evaluation of novel developed biodegradable metal working fluid during turning of AISI 420 material

Application of CaCO<sub>3</sub> as Anti-Friction Lubricant Additive to Improve Robustness in Sheet Metal Forming of High-Strength Aluminum

Application of artificial neural networks for the prediction of the service conditions of an elastohydrodynamic EHL contact in the presence of solid pollutant

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