Contribution à l’amélioration du processus d’industrialisation du laminage transversal

Abstract : Cross wedge rolling (CWR) is a metal forming process used in the automotive industry. One of its applications is in the manufacturing process of connecting rods. CWR transforms a cylindrical billet into a complex axisymmetrical shape with an accurate distribution of material. This preform is forged into shape in a forging die. CWR industrialization has still some limitations, mainly the designing of the tools. This thesis work seeks to improve CWR industrialization by reducing the time needed for the design of the tools and by increasing CWR tool lifecycle. In order to achieve these goals, two main axes are identified: improving the tool design procedure and identifying the physical phenomenon affecting the stability of the process, mainly tool wear.This research work is based upon three main topics. First, evaluating of the predictability of the numerical simulation of the CWR process and its robustness towards the numerical parameters of the model and the process parameters. Second, implementing a design methodology that allows the designer to choose the geometrical parameters of the wedge and evaluating the resultant geometry of the tool through the numerical simulations. And third, identifying the wear zones of the tool and the factors leading to its development
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Catalina Gutierrez. Contribution à l’amélioration du processus d’industrialisation du laminage transversal. Génie des procédés. Ecole nationale supérieure d'arts et métiers - ENSAM, 2017. Français. ⟨NNT : 2017ENAM0027⟩. ⟨tel-01685217⟩

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