Metalworking fluids—Mechanisms and performance

Brinksmeier, E.; Meyer, Daniel; Huesmann-Cordes, A.G.; Herrmann, Christoph

doi:10.1016/j.cirp.2015.05.003

Cited by 319 publications

(119 citation statements)

References 153 publications

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“…Metalworking fluids (MWFs) are used in metal removal processes such as cutting, milling, and grinding to reduce friction between the tool and the workpiece, increase tool life by reducing wear, and improve surface finish [1][2][3][4]. MWFs with nanoparticle additives have been widely investigated for the purpose of reducing the mechanical friction and wear between components obtaining very promising results [5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Anti-Wear Properties of Metalworking Fluids Enhanced with Halloysite Nanotubes

et al. 2017

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Featured Application: nanoparticle additives for improving tribological properties of metalworking cutting fluids, enhancing tool life and surface finish in machining processes. Abstract:The study of nanoparticles as additives for metalworking fluids (MWFs) with applications in the metal removal processes, or machining, has received increasing attention due to the possible enhancements on tribological properties. In this study, low-cost and environmentally friendly nanoparticle additives of halloysite clay nanotubes (HNTs) were dispersed in metalworking fluids utilized for milling processes. Concentrations of 0.01, 0.05, 0.10 wt. % were incorporated into a mineral oil (MO) and a semi-synthetic fluid (SF) by ultrasonication. The anti-wear properties of metalworking nanofluids were characterized with a T-05 block-on-ring tribotester at a contact pressure of 0.5 GPa. Surface roughness of worn block materials was obtained with an optical 3D surface measurement system. Results showed that at a concentration of 0.10 wt. % HNTs block mass loss was lowered by 24% for the MO + HNTs nanofluids. For the SF + HNTs, a reduction of 63% and 32% in wear mass loss and coefficient of friction (COF), respectively, were found at the same concentration. The tribological enhancing mechanism for the applied contact pressure was proposed to be due to a reduction of the area of contact and nanoparticle sliding between surfaces with no HNT deposition, evidenced by energy dispersive spectrometry (EDS). Furthermore, surface roughness studies of worn blocks showed smoother surfaces with lower groove density with the addition of nanoparticle additives. The results of this study demonstrate that HNTs can improve the lubricity of metalworking cutting fluids used for machining processes, enhancing tool life and providing better surface finish of products.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Anti-Wear Properties of Metalworking Fluids Enhanced with Halloysite Nanotubes

et al. 2017

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“…Furthermore, in this study, the method used to analyze toxic ingredients contained in mineral oils did not require complex instrumentation as reported earlier (39,40). Instead, in this study, these compounds were recognized by their strong IR absorption of the aldehyde and N-Nitroso compounds' functional groups, present only in poorly refined mineral oil as an additive or a byproduct of lathe processes (28,41).…”

Section: Discussionmentioning

confidence: 99%

Development of a New Method for Analysis of Oil Mists

et al. 2017

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“…Under pressure it forms protective layers on the tribologically loaded surfaces, thereby reducing friction and wear. As more sulfur is bound in the molecule, the higher is its activity and, respectively, the probability of chemisorption with oxidic groups of the metal surface [12].…”

Section: Experimental Set-upmentioning

confidence: 99%

Improving the Tribological Properties of Gear Synchronizations by Adjusting the Metalworking Fluid Composition of the Grinding Process

Seidel

Wagner

Brinksmeier

2017

JMMP

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Abstract:The modification of tribological properties of highly loaded components by selecting a suitable manufacturing process is state-of-the-art. Beyond the generation of microgeometrical structures, the present study investigates the potential of chemical alterations, i.e., metalworking fluid additives engaged in a grinding process to improve the chemical surface properties of machined gear synchronizations. These gearbox components ensure a uniform switching operation by harmonizing the number of revolutions between the power transmitting components by friction. A short running-in phase and a friction coefficient which is constant over the entire duration of use are required. The results show that the addition of polysulfide as well as zincdialkyldithiophosphate in the metalworking fluid could considerably reduce the friction coefficient fluctuations and the running-in phase of the generated synchronizations in later operation tests. The wear distances were lower although the machined parts revealed higher surface roughnesses as the reference workpieces, which indicates the formation of sorption or reaction layers of the additives with the metal surface.

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Metalworking fluids—Mechanisms and performance

Cited by 319 publications

References 153 publications

Evaluation of Anti-Wear Properties of Metalworking Fluids Enhanced with Halloysite Nanotubes

Evaluation of Anti-Wear Properties of Metalworking Fluids Enhanced with Halloysite Nanotubes

Development of a New Method for Analysis of Oil Mists

Improving the Tribological Properties of Gear Synchronizations by Adjusting the Metalworking Fluid Composition of the Grinding Process

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