Review of Past Innovations and Recent Improvements in Aluminum
Joseph C. Benedyk, Light Metal Age, South San Francisco, California, USA
Extrusion Production: from Alloy to Process Development
Track: VALUE-ADDED PROCESSES - Design Developments
ABSTRACT—Recent improvements in the aluminum extrusion process aimed at raising
productivity and quality are reviewed. From aluminum alloy development through the entire
extrusion process chain – beginning with ingot casting and billet preparation, tooling selection,
optimizing extrusion parameters, and ending with age hardening – there is an interdependence of
material and process variables that provide the means of maximizing productivity, reducing scrap,
and raising extrusion quality. Many of these developments have been described in articles that
have appeared in Light Metal Age in the past 70 years. None of these developments would have
been possible without the historical achievements of extruders in previous decades that have left a
legacy of trial and error on which modern improvements depend. The pathway from trial and
error to discovery on some of these extrusion chain developments is examined by reviewing
many of the aluminum extrusion articles that have appeared in Light Metal Age in past issues.
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