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New approach for spring-back compensation in die design application for high strength steel

Published online by Cambridge University Press:  27 September 2004

M. Munier ,
J.-M. Devin  and
M. El-Mouatassim
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Abstract

Carmakers face ever more frequently the phenomenon of spring-back after stamping, especially with new high strength steels (HSS and VHSS). Renault and Arcelor have been working together for many years on the formability and spring-back of VHSS. Recently, they aimed at establishing a method to optimize die shape in order to compensate for the spring-back after stamping. A method, named “Outifo” has been developed in order to obtain by simulation, from the initial CADs of the part and its referential stamped die, a CAD of a die with a modified shape. This allows the real stamping part, after forming and spring-back, to recover as closely as possible the geometry of the theoretical part defined by the designer.

Type
Research Article
Information
Metallurgical Research & Technology , Volume 101 , Issue 7-8: Surfaces et revêtementsAciériesLaminagesFormage , July 2004 , pp. 607 - 613
Copyright
© La Revue de Métallurgie, 2004

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