Results 1 to 10 of about 35,683 (287)

Identification of Stray Gassing of Inhibited and Uninhibited Mineral Oils in Transformers

open access: yesEnergies, 2020
The aim and contribution of this paper is to identify with Duval Pentagon 2 the stray gassing (SG) patterns of inhibited and uninhibited mineral oils in transformers in service and in the well-established laboratory SG tests of CIGRE and ASTM, so that SG
Michel Duval, Thomas Heizmann
exaly   +3 more sources

Control of the degradation of the mineral transformer oils hydrocarbon base [PDF]

open access: yesE3S Web of Conferences, 2020
Currently, the degree of degradation of the oils hydrocarbon base remains outside the field of vision of operating services. The aim of this work was to analyse the process of regeneration of aged mineral transformer oils using adsorption cleaning.
Garifullin Marsel Sh.   +4 more
doaj   +2 more sources

EFFECT OF VEGETABLE OILS AS LUBRICATING/COOLING MEDIUM DURING MACHINING PROCESSES ON SURFACE ROUGHNESS [PDF]

open access: yesJournal of the Egyptian Society of Tribology, 2021
Using of natural oils in machining process for lubrication/cooling purposes represents an increasing trend nowadays because of their good properties from the environmental point of view, thermal and oxidative stability in comparison with conventional ...
R. A. Ibrahem, A. S. Ali, W. M. Shewakh
doaj   +1 more source

Resistant Properties of Lubricating Materials with Fullerene Nanoadditives

open access: yesПроблеми трибології, 2023
The purpose of this article is to study the possibility of using fullerene additives and their effect on the antiwear properties of aviation mineral and synthetic oils.
V.P. Oleksandrenko   +5 more
doaj   +1 more source

PROCESSING OF CRUDE MINERAL OILS AS EMULSIFABLE CONCENTRATES FORMULATION TO EVALUATE THEIR PHYSICAL PROPERTIES AND PESTICIDAL EFFICIENCY [PDF]

open access: yesJournal of Plant Protection and Pathology, 2011
Three trade mineral oils B. W and Y were formulated as emulsifable concentrates in percentages of 94, 95 and 85, respectively.  The physical properties of the mineral oils used indicated that, Y 85% EC mineral oil was the best one because it was more ...
Shereifa El-Shereif, Y. El-Shiekh
doaj   +1 more source

Wettability investigation of stainless steel fibers with mineral oils using the modified method for liquid penetration kinetics [PDF]

open access: yesActa Periodica Technologica, 2018
The modified Washburn equation and the lipophilic/hydrophilic (L/H) ratio are most commonly used for the wettability characterization of fibers. Therefore, this liquid penetration method was applied for the wettability investigation of stainless
Hadnađev-Kostić Milica S.   +2 more
doaj   +1 more source

Oil Immersed Distribution Transformer HST Reduction using Vegetable Oils and ONAN Cooling [PDF]

open access: yesJournal of Applied and Computational Mechanics
Today, the use of electricity sources is increasing as cities are growing. With the increasing use of mineral oils for transformers cooling in the distribution network, due to the problems encountered using these oils, an alternative fluid should be used
Mohammad Ali Taghikhani
doaj   +1 more source

Influence of ageing on oil degradation and gassing tendency under high-energy electrical discharge faults for mineral oil and synthetic ester

open access: yesHigh Voltage, 2020
In this work, mineral oil and synthetic esters were selected at different ageing factors (based on acidity values). Fresh and aged oils have been subjected to high-energy discharges (repeated 100 breakdowns) to simulate electric faults of highly ...
L. Loiselle   +3 more
doaj   +1 more source

Vegetable Oil Based Lubricants: Challenges and Prospects

open access: yesTribology Online, 2019
Lubricants are very important consumables in all industries as failure in machine parts due to absence or wrong choice of lubricants carries enormous cost.
Timothy Yakubu Woma   +4 more
doaj   +1 more source

Determination of the aromatics content in mineral oils by LF NMR

open access: yesУчёные записки Казанского университета: Серия Естественные науки, 2023
Molecular group composition analysis of mineral oils is helpful to predict the performance of a future lubricant and to assess the compatibility of plasticizer oil with rubbers.
M.G. Fazlyyyakhmatov   +6 more
doaj   +1 more source

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