The effect of an organic pentasulfide EP additive in turning and milling operations
| Autor: | Clotilde Minfray, Guillaume Fromentin, Aleksandra Bierla, Thierry Le Mogne, Jean Michel Martin |
|---|---|
| Přispěvatelé: | Laboratoire de Tribologie et Dynamique des Systèmes (LTDS), École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Ecole Nationale d'Ingénieurs de Saint Etienne-Centre National de la Recherche Scientifique (CNRS), Laboratoire Bourguignon des Matériaux et Procédés (LABOMAP), Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM) |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Materials science
[PHYS.MECA.GEME]Physics [physics]/Mechanics [physics]/Mechanical engineering [physics.class-ph] 02 engineering and technology EP sulfur additives Mécanique: Génie mécanique [Sciences de l'ingénieur] 0203 mechanical engineering X-ray photoelectron spectroscopy cutting fluid Materials Chemistry Coupling (piping) turning physico-chemical analyses Auger electron spectroscopy Metallurgy Surfaces and Interfaces Tribology 021001 nanoscience & nanotechnology Condensed Matter Physics Surfaces Coatings and Films [SPI.MECA.GEME]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph] 020303 mechanical engineering & transports Mechanics of Materials Lubrication milling Cutting fluid 0210 nano-technology |
| Zdroj: | The effect of an organic pentasulfide EP additive in turning and milling operations The effect of an organic pentasulfide EP additive in turning and milling operations, 2014, 317 (1-2), pp.129-140 |
| Popis: | Coopération avec Ecole Centrale Lyon; International audience; Because a cutting fluid could be equally used for different cutting operations, this study proposed to investigate the behavior of a well-known extreme-pressure additive (pentasulfide) in both turning and milling operations of a steel workpiece. The experimental approach is based on the coupling of mechanical tests (turning, milling, and tribological tests) with physico-chemical characterizations (Auger Electron Spectroscopy and X-Ray Photoelectron Spectroscopy) of the friction surfaces (chip and tool). In the case of milling, it was shown that the presence of a pentasulfide additive has a beneficial effect on the specific cutting energy (kc) and flank wear (Vb). These results are correlated with the presence of iron sulfides (FeS and FeS2) on the flank face of the cutter mill and on the chip face in contact with the mill. No such additive effects are found in case of turning. A lubrication model is proposed for the case of milling based on an indirect lubrication of the tool/workpiece and tool/chip contacts due to the transfer of iron and its reaction with sulfur compounds to produce iron sulfides. Because milling is a discontinuous cutting process, this lubrication mechanism is much more efficient than that observed in turning. Indeed, the tool faces are re-fed iron sulfides each time they leave the workpiece. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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