Effect of application of pseudo-porthole die in hot extrusion of AA6063 chips for direct recycling on mechanical properties of products
Sorawut Srichana, Tatsuya Funazuka, Takumi Urakawa, Tomomi Shiratori, Noriyasu Oguma, Numpon Mahayotsanun, Kuniaki Dohda
Abstract. This paper’s objective was to investigate the influences of the pseudo-porthole die on the mechanical properties and surface quality of hot extrusion using recycled aluminum chips. Two types of AA6063 billets (cast and chip) and two designs of nitrided SKD61 dies (solid and pseudo-porthole) were considered. The tensile tests were carried out to evaluate the mechanical properties of the extruded profiles at three locations (Head, Middle, and Tail). The optical microscope was used to examine the extruded profiles’ surface characteristics and fracture surfaces. The results showed that the pseudo-porthole die improved the chip billet’s density (reducing porosity). Although the extrusion forces were higher, the pseudo-porthole die enhanced the mechanical properties (increased elongations) and surface quality (reduced lumps or pickups).
Keywords
Hot Extrusion, Aluminum Alloy Chip, Pseudo-Porthole Die, Recycling
Published online 5/7/2025, 8 pages
Copyright © 2025 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Sorawut Srichana, Tatsuya Funazuka, Takumi Urakawa, Tomomi Shiratori, Noriyasu Oguma, Numpon Mahayotsanun, Kuniaki Dohda, Effect of application of pseudo-porthole die in hot extrusion of AA6063 chips for direct recycling on mechanical properties of products, Materials Research Proceedings, Vol. 54, pp 707-714, 2025
DOI: https://doi.org/10.21741/9781644903599-76
The article was published as article 76 of the book Material Forming
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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