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Extrud-AL™ - An Alternative Approach to Nitrogen Die Cooling

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Extrud-AL™™ - An Alternative Approach to Nitrogen Die Cooling

Richard Twigg, Robert Oesterreich, Air Liquide America, LP

Track: DIE DESIGN AND TECHNOLOGY - Surface Treatments and Materials

ABSTRACT --- A unique approach to the use of inert gas(es) in the aluminum extrusion
process is presented. By combining expertise in understanding the interactions of the
atmosphere, aluminum metal, and the resultant oxides, a process for controlling these
products of reaction has been developed which greatly reduces or eliminates their effects.
Unlike the 1980’s vintage die cooling with nitrogen, this approach focuses on: optimization of
gas usage, efficacy of delivery system, reducing extrusion tooling rework and innate die
breakage, extending die run life, and maximization of return. This paper will describe Air
Liquide’s Extrud-AL™ technology and some recent results.

© 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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