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Feasibility study of a novel multi-container extrusion method for manufacturing wide aluminium profiles with low force

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Title: Feasibility study of a novel multi-container extrusion method for manufacturing wide aluminium profiles with low force
Authors: Lv, J
Yu, J
Shi, Z
Li, W
Lin, J
Item Type: Journal Article
Abstract: Extrusion profiles are extensively used in industries and any improvement in the process could potentially have a large impact on energy and cost savings. In this study, a novel extrusion method, namely multi-container extrusion, was proposed for producing thin-walled wide aluminium components with low force. Its basic principle is to enable multiple billets to be welded and forced through die orifice simultaneously. To demonstrate its feasibility, a series of studies have been conducted including the experimental design and set-up of multi-container extrusion, microstructural and mechanical characterisations of the extruded components, and the comparison with the existing extrusion method. A three-container extrusion tooling was designed and manufactured to produce wide hollow profiles with plasticine and aluminium alloy AA6063. Optical microscopic observations and tensile tests were carried out for different positions of AA6063 extrudates. For the specimens near the extrudate front (8 mm and 23 mm away), tensile fractures occurred exactly along the distinct welds which were formed when individual billets met inside the die during extrusion. Further away from the extrudate front (83 mm, 98 mm and 113 mm), the welds were hardly observed, and the tensile fractures occurred outside the welds, indicating that good welding quality can be obtained in the multi-container extrusion process. Compared with the conventional porthole extrusion method, three-container extrusion could significantly reduce the required force to about 15 % for extruding the same profile. This study demonstrates that the proposed multi-container extrusion method can form wide profiles and greatly reduce the extrusion force requirement.
Issue Date: Jan-2023
Date of Acceptance: 16-Nov-2022
URI: http://hdl.handle.net/10044/1/101816
DOI: 10.1016/j.jmapro.2022.11.055
ISSN: 1526-6125
Publisher: Elsevier BV
Start Page: 584
End Page: 593
Journal / Book Title: Journal of Manufacturing Processes
Volume: 85
Copyright Statement: © 2022 The Authors. Published by Elsevier Ltd on behalf of The Society of Manufacturing Engineers. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Publication Status: Published
Online Publication Date: 2022-12-07
Appears in Collections:Mechanical Engineering

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