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Effects of toolpath and clamping strategies in machining distortion of stainless-steel parts

Communication avec acte
Author
CHERIF, Iheb
MARTINS DO OUTEIRO, Jose Carlos
COTTON, Dominique
12062 VALDUC [DAM/VALDUC]
POULACHON, Gerard
127742 Laboratoire Bourguignon des Matériaux et Procédés [LABOMAP]
CHARRONDIERE, Guillaume
BROSSE, Alexandre
300488 FRAMATOME

URI
http://hdl.handle.net/10985/15637
DOI
10.1016/j.procir.2019.04.065
Date
2019

Abstract

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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