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Influence of design and process parameters on service life of nut hot forging die

Abstract : A nut hot forging die was investigated in order to increase its life time. In a first step forging process simulation shows that die surface temperature reaches 450 °C and that mechanical loads on the die are closely related to the accuracy of the initial billet length. In a second step die thermo-mechanical simulation was used to optimize the design: geometrical aspect as well as shrink fitting were investigated. Life time increase was estimated in using the Manson universal slope relation. This increase was confirmed from the practical results.
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https://hal.archives-ouvertes.fr/hal-01851438
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Véronique Garat, Gérard Bernhart, Laurence Hervy. Influence of design and process parameters on service life of nut hot forging die. Journal of Materials Processing Technology, Elsevier, 2004, 147 (3), p.359-369. ⟨10.1016/j.jmatprotec.2003.01.002⟩. ⟨hal-01851438⟩

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