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The Single-Cell Die Oven

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The Single-Cell Die Oven

Stephen Wasilenko, Castool Tooling Solutions
Roger A.P. Fielding, Benchmarks
George Macey, Macey Heat Transfer Associates

Track: DIE DESIGN AND TECHNOLOGY - Technology in Practice

ABSTRACT --- Case studies of recent installations document the reduction in die trials,
and the increase in productivity and recovery, which is achieved through control of the
temperature of tooling - dies and support tooling, containers, stems, and fixed dummy
blocks - before the tooling is loaded into the extrusion press. Heat transfer models,
which take account of the influence of radiation, convection and conduction of heat
between radiant heating elements, and press tooling, enable the proper design and
configuration of the tooling ovens. This paper describes the development of the
modern single-cell die oven, emphasizing the control of the surface temperature of the
tooling and consequently the heating times; to ensure that heating times are
minimized, while the properties of the tooling steels are maintained. Experiments with
instrumented tooling are described. Essential facts debunk the use of vacuum or inert
gases as means to prevent or delay the oxidation of tool steels.

© 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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