Mechanical and physico-chemical study of sulphur additives effect in milling of high strength steel
Article dans une revue avec comité de lecture
Most machining operations require the presence of a cutting fluid in order to ensure their success due to the intensity of thermal and mechanical conditions generated on the cutting tools. In some cases of severe machining, the fluid contributes to lubrication in a physicochemical way thanks to the additives it contains. This study aims to analyze the tribochemical mechanisms of lubrication during milling operations and subsequently at optimizing the lubricant formulation. The objective of this study is also to identify and to compare, the performance of various Extreme Pressure (EP) sulfur-containing additives, and to understand their action mechanisms in metal cutting. Physico-chemical analyses are carried out by means of Auger Electron Spectroscopy (AES) and X-ray Photoelectron Spectroscopy (XPS) with the purpose of detecting the nature of additive reaction products on the surfaces involved in cutting and correlating them with the milling results. The polysulfide additive is found to exhibit the best efficiency (decrease of specific cutting energy and tool wear) in the tested milling conditions. A correlation is found between the additive chemical reactivity and the milling test results.
Files in this item
Showing items related by title, author, creator and subject.
Communication avec acteBIERLA, Aleksandra; FROMENTIN, Guillaume; MARTIN, Jean-Michel; LE MOGNE, Thierry; MINFRAY, Clotilde; GENET, Nicole (Technische Akademie Esslingen, 2008)In order to correlate the effect of lubricant viscosity and base oil on the efficiency of a lubricant, we measure the variation of tapping torque according to ASTM D5619 standard. Three fully formulated lubricants containing ...
Article dans une revue avec comité de lectureBIERLA, Aleksandra; FROMENTIN, Guillaume; MARTIN, Jean-Michel; LE MOGNE, Thierry; GENET, Nicole (Wiley, 2008)This study aims at analyzing the tribochemical mechanisms of lubrication during the process of form tapping and consequently optimizing the formulation of the lubricant. In order to correlate the tribochemical reactions ...
Article dans une revue avec comité de lectureMINFRAY, Clotilde; FROMENTIN, Guillaume; BIERLA, Aleksandra; MARTIN, Jean-Michel; LE MOGNE, Thierry (Elsevier, 2014)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 ...
Article dans une revue avec comité de lectureFROMENTIN, Guillaume; BIERLA, Aleksandra; MINFRAY, Clotilde; POULACHON, Gérard (Elsevier, 2010)This paper presents the results of a study of lubrication in form tapping and aims at a better understanding of its effect. It appears that lubrication is of paramount importance. Oil with efficient high pressure additives ...
Analyses of hydrogen distribution around fatigue crack on type 304 stainless steel using secondary ion mass spectrometry Article dans une revue avec comité de lectureSAINTIER, Nicolas; AWANE, T; OLIVE, Jean-Michel; MATSUOKA, Shuzo; MURAKAMI, Yoko (Elsevier, 2011)Secondary Ion Mass Spectrometry (SIMS) analyses were carried out on type 304 austenitic stainless steel. On annealed specimen exposed to hydrogen (10 MPa, 358 K), Element Depth Profiles SIMS mode was able to describe ...