Schmierstoffe im Betrieb

Möller, Uwe J.; Nassar, Jamil

doi:10.1007/978-3-642-56379-9

Cited by 36 publications

(9 citation statements)

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“…Exhaust air systems using electrostatic separators are quite complex, but they have the potential to achieve the highest degree of precipitation [17]. Generally, the exhaust air system can either be installed as a single-supply system for one machine or as a centralised system for multiple machines.…”

Section: Exhaust Air Filtration Systemmentioning

confidence: 99%

“…Within these circulating systems contaminated fluid from the machine is filtrated in a filter unit and returned to the machine tool. In machining processes contamination of cutting fluids occurs due to dirt, metal fines, swarf or chips and also tramp liquids and results in a deterioration of fluid quality [17], [18]. In general, belt filters, magnetic separators, separators or hydrocyclones are used to purify the cutting fluids [15].…”

Section: Cutting Fluid Filtration Systemmentioning

confidence: 99%

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Energy Efficient Process Chain: The Impact of Cutting Fluid Strategies

et al. 2015

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Machining processes can be realized using different cutting fluid strategies -flood, dry and minimum quantity lubrication (MQL). The choice of each strategy directly influences the need of peripheral units (e.g. filter units) and additional processes within the process chain (e.g. washing). Thus, selecting an energy and resource efficient cutting fluid strategy depends not only on cutting fluid as a resource, but also on its inherent impact on the entire process chain. Therefore, this paper presents a method for decision support, considering technical boundary conditions and effects on the process chain layout as well as its application in a case study.

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Section: Exhaust Air Filtration Systemmentioning

confidence: 99%

Section: Cutting Fluid Filtration Systemmentioning

confidence: 99%

Energy Efficient Process Chain: The Impact of Cutting Fluid Strategies

et al. 2015

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“…Using the latest knowledge from research, it is found that there is no dry friction mechanism to substitute liquid lubrication (Klamann, 1982;Mö ller and Boor, 1987;Woydt, 1998) at PV-values greater than 10 MPa m/s. Owing to physical characteristics, there are boundaries for oils and greases with regard to high temperature stability and rheology.…”

Section: Introductionmentioning

confidence: 97%

Dry friction and wear rates as under liquid lubrication of ceramic/carbon couples up to 450°C

Kleemann¹,

Woydt

2004

Industrial Lubrication and Tribology

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In a high temperature tribometer, stationary carbon has been tested against different rotating ceramics (SiC, Si 3 N 4 , Al 2 O 3 , WC-6Ni, MgO-ZrO 2 , (Ti, Mo)(C, N)) and stainless steel (DIN 1.4876). The rotating discs were grinded, polished and/or lapped. For most material combinations, the wear morphology is known from available literature. A transfer film with a typical wear pattern was found on the rotating disc. The combination of antimony graphite EK3245 against MgO-ZrO 2 did not form carbonaceous transfer layer. Through advanced variation of the roughness up to R pk ¼ 0.011 mm, the wear rate has been reduced to K v < 3.5 £ 10 2 8 mm 3 / N m at a stable coefficient of friction in a "millirange" of m , 0.008 for a sliding distance of 20.000 m. Electronic access

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“…The obtained results are compared with limit values proposed by Möller and Nassar (2002) for turbine and mineral hydraulic oils and Booser (1994) for engine oils (cf. Tables 3-6).…”

Section: Acid Number and Viscositymentioning

confidence: 99%

Multi-channel IR sensor system for determination of oil degradation

Bley¹,

Pignanelli²,

Schütze³

2014

J. Sens. Sens. Syst.

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Abstract.A miniaturized infrared (IR) multi-channel sensor system was realized to determine chemical oil degradation, e.g., oxidation, increasing water content. Different artificially aged oil samples (synthetic motor oil, mineral hydraulic oil and ester-based hydraulic fluid) were prepared by oxidative degradation at elevated temperatures or addition of water, and characteristic degradation features in the IR spectrum were detected using FTIR spectroscopy. In addition, the absorption behavior of water contaminated synthetic motor oil was analyzed with increasing temperature. To determine the influence of different degradation effects on the measurement results the sensor system was characterized with the various oil samples. The system uses a reference channel to suppress the effect of decreasing transmission over the entire spectrum caused, e.g., by increasing soot content in the oil or contamination of the optical path.

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Schmierstoffe im Betrieb

Cited by 36 publications

References 0 publications

Energy Efficient Process Chain: The Impact of Cutting Fluid Strategies

Energy Efficient Process Chain: The Impact of Cutting Fluid Strategies

Dry friction and wear rates as under liquid lubrication of ceramic/carbon couples up to 450°C

Multi-channel IR sensor system for determination of oil degradation

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