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Sclero-topometry metrology in valorisation of waste oil for micro-machining of ductile cast iron

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During the time, the specific characteristics and the efficient life time of oil progressively decrease, due to complex pollution, ultimately making the oil unsuitable for the initial applications. The strategy to regenerate and to valorise waste oils is investigated using improved combinations of sclerometric and topometric tests on ductile nodular cast iron. Tribo-abrasive tests are performed in critical conditions, with base oil, waste oil and regenerated oil, of similar viscosities in order to discriminate their interfacial performances. The forms of the scratch traces indicate wear resistance and tendency to elasto-plastic deformation. The mechanisms of deformation and frictional behaviours were evaluated using optical and Scanning Electron Microscopy and measured for various tribological conditions with tactile and optical profilometry. The Energy Dispersive X ray Spectroscopy completes the chemical superficial distribution of pertinent elements. The surface topography metrology is used to characterize the scratch profiles and to determine the volume of the displaced and removed material, as well as maximum pit height. The originality of this paper is that it is a unique approach specifically devoted to transformer oil concerning tribological conditions.
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Bibliogr. 32 poz., rys., wykr.
  • Laboratoire de Tribologie et Dynamique des Systèmes, 36 ave Guy de Collonges, Ecole Centrale de Lyon, 69134 Ecully France; Sté Daffos et Baudasse, 61 rue Decomberousse, 69100 Villeurbanne, 04 72 37 51 60, France
  • Poznan University of Technology, 3 Piotrowo 60-965 Poznan, Poland; Metallurgical Group CIF Ferry-Capitain, France
  • Laboratoire de Tribologie et Dynamique des Systèmes, 36 ave Guy de Collonges, Ecole Centrale de Lyon, 69134 Ecully France
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