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Butterfly Dies - Increase Extrusion Speed through Innovative Porthole Die Design

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Butterfly Dies - Increase Extrusion Speed through Innovative Porthole Die Design

Tommaso Pinter, Almax-Mori, Mori, Italy

Track: EXTRUSION/DIE, PRACTICAL - Tooling Performance

ABSTRACT --- The Butterfly construction consists mainly of designing the
mandrel section of a porthole aluminum extrusion die, giving the bridges an
arched shape. With this innovative architecture, the details in the undercut can
be brought together by opening the external feeds and better supporting the
difference in the flows called by the profile, thus achieving important results in
terms of productivity and porthole die behavior during extrusion. A case study
has been used to compare the behavior of a Butterfly Die™ with that of a
traditional porthole die design. A 3-D Finite Element Method (FEM) simulation
will be used to develop the Butterfly Die™ in terms of feeding balance through
multiple ports.

© Extrusion Technology for Aluminum Profiles Foundation (ET Foundation). All rights reserved. No part of The Proceedings may be reproduced in any form without the express written permission of the ET Foundation.

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