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The Effect of Die Type and Die Design on Heat Generation and Productivity

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The Effect of Die Type and Die Design on Heat Generation and Productivity when Extruding AlMgSi Alloys

Gregory Lea, Alcan Primary Metal Group
Christopher Jowett, Alcan International Limited

Track: DIE DESIGN AND TECHNOLOGY - Practical Design

ABSTRACT --- In the extrusion of 6xxx aluminum alloys, the type of die and its
design play a significant role in the amount of heat generated in the bulk metal, as well
as locally at the aluminum/die bearing interface. When the temperature at the die
bearing approaches the solidus for the given alloy, tearing, pick-up, and other surface
defects start to occur. Therefore, the limiting component of the extrusion process, as it
relates to surface defects, is the temperature at this interface. This paper will examine
the effects of die types and die design on the temperature at the die bearing and thus
productivity. It will also include a review of factors affecting productivity and tearing
mechanisms.

© 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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