An experimental study on the effects of lubrication in form tapping
TypeArticles dans des revues avec comité de lecture
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 can reduce considerably the torque necessary to form the thread. Lubricants reduce the tool / work material friction during the forming process and, as a consequence, the resulting strain distribution and the strain hardening of the thread are affected. This investigation includes an analysis on the effects of additives in lubricants on the temperature during tapping, enabling correlation with the appearance of chemical elements of the oil which react with the thread material and contribute to lubrication.
Files in this item
Showing items related by title, author, creator and subject.
Mechanical and physico-chemical study of sulphur additives effect in milling of high strength steel BIERLA, Aleksandra; FROMENTIN, Guillaume; MINFRAY, Clotilde; MARTIN, Jean-Michel; LE MOGNE, Thierry; GENET, Nicole (Elsevier, 2013)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, ...
BIERLA, 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 ...
MINFRAY, 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 ...
BIERLA, 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 ...
FROMENTIN, Guillaume; POULACHON, Gérard (Springer-Verlag, 2010)Thread milling is a method which is increasingly used for machining thread. For this operation, a helical interpolation is required. Furthermore, the thread mill is a tool whose geometry is rather complex. Its envelope ...