Effects of toolpath and clamping strategies in machining distortion of stainless-steel parts
TypeCommunications avec actes
Heat exchangers in new nuclear power generation plants are made of thin AISI 316L stainless-steel plates stacked together in order to improve their efficiency and compactness. To ensure the assembly, the global distortion of those plates must be mastered and minimized, mainly by predicting the evolution of the residual stress field during their manufacturing process chain. During machining, those residual stresses are redistributed to reach another equilibrium state, leading to a macroscopic part distortion. The main objective of this work is to study experimentally the influence of the machining toolpath and clamping strategies on the global part distortion. Then, a part distortion model is developed in order to verify the clamping effect on the distortion.
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CHERIF, Iheb; COTTON, Dominique; POULACHON, Gerard; OUTEIRO, Jose; BROSSE, Alexandre; REBELO KORNMEIER, Joana (Springer Science and Business Media LLC, 2019)Machining part distortion is due to residual stresses induced by previous manufacturing processes. This study aims to evaluate the influence of machining conditions on AISI 316L plate distortion. Therefore, a special ...
Influence of toolpath and clamping strategies on stainless steel plates distorsion after machining CHARRONDIERE, Guillaume; CHERIF, Iheb; POULACHON, Gérard; COTTON, Dominique; OUTEIRO, José (2018)Heat exchangers in nuclear power generation plants are made of thin stainless-steel plates assembled together in order to improve their efficiency and compactness. To ensure the assembly, the global distortion of those ...
CHERIF, Iheb; COTTON, Dominique; OUTEIRO, José; POULACHON, Gérard (2018)La fabrication des plaques en 316L de grandes tailles et de faibles épaisseurs destinées aux échangeurs thermiques passe par plusieurs étapes de fabrication (laminage, traitement thermique et finalement l’usinage), afin ...
POULACHON, Gérard; OUTEIRO, José; RAMIREZ, Christophe; ANDRÉ, Victorien; ABRIVARD, Guillaume (Elsevier, 2016)This paper deals with the hole surface quality when CFRP drilling. Mechanical instrumented operations have enabled to follow precisely the damage on the tool margins and the main cutting edges. The amount of uncut fibers ...
Process Mechanics and Surface Integrity Induced by Dry and Cryogenic Machining of AZ31B-O Magnesium Alloy OUTEIRO, José; ROSSI, Frédéric; FROMENTIN, Guillaume; POULACHON, Gérard; GERMAIN, Guénaël; BATISTA, Antonio (Elsevier, 2013)The corrosion resistance of magnesium alloys depends mainly on its surface integrity. Previous experimental studies have shown that machining can induces small (nano-scale) grain size, compressive residual stresses and ...