Proposed Solution for Random Characteristics of Aluminium Alloy Wire Rods Due to the Natural Aging

In the last 50 years in the worldwide market for power transmission cables, there has been a tendency to replace aluminium cables electrical grade (EC) with steel cables by fully aluminium alloy (AAAC). The advantage in using cable AAAC is mainly economic (least amount of support structures and main...

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Autores principales: Bunte, Claudio, Zalcman, Diego, Medina, Carlos, Glassel, Moisés
Formato: Parte de libro publisherVersion
Lenguaje:Inglés
Publicado: Elsevier 2024
Materias:
Aluminium alloy, natural ageing, cold work
Acceso en línea:http://hdl.handle.net/20.500.12272/11151
https://doi.org/10.1016/j.mspro.2015.04.012
Aporte de:
RIA - Repositorio Institucional Abierto (UTN) de Universidad Tecnológica Nacional
id I68-R174-20.500.12272-11151
record_format dspace
spelling I68-R174-20.500.12272-111512024-07-23T15:15:43Z Proposed Solution for Random Characteristics of Aluminium Alloy Wire Rods Due to the Natural Aging Bunte, Claudio Zalcman, Diego Medina, Carlos Glassel, Moisés Aluminium alloy, natural ageing, cold work In the last 50 years in the worldwide market for power transmission cables, there has been a tendency to replace aluminium cables electrical grade (EC) with steel cables by fully aluminium alloy (AAAC). The advantage in using cable AAAC is mainly economic (least amount of support structures and maintenance), addition to the elimination of the problems of galvanic corrosion and improved abrasion resistance. In order to obtain better mechanical properties, respect to the pure aluminium, aluminium alloyed with magnesium and silicon (AA6XXX series) is used, which by a combination of cold working and heat treatment allows obtaining greater mechanical strength without affecting too much the electrical conductivity. In this development it has worked with AA6101/6101 M alloy. The manufacturing of aluminium alloy wire rods for such applications, using the conventional process Properzi, requires heat treatment of solubilized, continuous or discontinuous (batch). During the waiting time of two months or more, the wire coils are exposed to natural aging at room temperature, entering into the wiredrawing machines with different mechanical properties. The wires obtained by the traditional method of manufacture in Argentina, through the wiredrawing, result in significantly higher mechanical properties, not complying with the standards. Furthermore many breaks occur mainly when a high tensile strength wire is processed for wire 2 mm in diameter or less. In the proposed method, a part of the initial wiredrawing is replaced by cold rolling and a subsequent partial aging. The results obtained in this study allow us to conclude that in the proposed process better properties and mechanical integrity are achieved than the traditional process, maintaining the electrical conductivity. SAM CONAMET 2014 Bunte, Claudio. UTN-FRBA. Argentina Zalcman, Diego. UTN-FRBA. Argentina Medina, Carlos. UTN-FRBA. Argentina Glassel, Moisés. UTN-FRBA. Argentina Peer Reviewed 2024-07-23T15:15:42Z 2024-07-23T15:15:42Z 2015 info:eu-repo/semantics/bookPart publisherVersion Procedia Materials Science http://hdl.handle.net/20.500.12272/11151 https://doi.org/10.1016/j.mspro.2015.04.012 eng Volume 9, 2015, Pages 97-104 IPUTNBA1333 Optimización de Procesos Termomecánicos en Materiales Ferrosos y No Ferrosos openAccess http://creativecommons.org/publicdomain/zero/1.0/ CC0 1.0 Universal Ninguna pdf Elsevier
institution Universidad Tecnológica Nacional
institution_str I-68
repository_str R-174
collection RIA - Repositorio Institucional Abierto (UTN)
language Inglés
topic Aluminium alloy, natural ageing, cold work
spellingShingle Aluminium alloy, natural ageing, cold work
Bunte, Claudio
Zalcman, Diego
Medina, Carlos
Glassel, Moisés
Proposed Solution for Random Characteristics of Aluminium Alloy Wire Rods Due to the Natural Aging
topic_facet Aluminium alloy, natural ageing, cold work
description In the last 50 years in the worldwide market for power transmission cables, there has been a tendency to replace aluminium cables electrical grade (EC) with steel cables by fully aluminium alloy (AAAC). The advantage in using cable AAAC is mainly economic (least amount of support structures and maintenance), addition to the elimination of the problems of galvanic corrosion and improved abrasion resistance. In order to obtain better mechanical properties, respect to the pure aluminium, aluminium alloyed with magnesium and silicon (AA6XXX series) is used, which by a combination of cold working and heat treatment allows obtaining greater mechanical strength without affecting too much the electrical conductivity. In this development it has worked with AA6101/6101 M alloy. The manufacturing of aluminium alloy wire rods for such applications, using the conventional process Properzi, requires heat treatment of solubilized, continuous or discontinuous (batch). During the waiting time of two months or more, the wire coils are exposed to natural aging at room temperature, entering into the wiredrawing machines with different mechanical properties. The wires obtained by the traditional method of manufacture in Argentina, through the wiredrawing, result in significantly higher mechanical properties, not complying with the standards. Furthermore many breaks occur mainly when a high tensile strength wire is processed for wire 2 mm in diameter or less. In the proposed method, a part of the initial wiredrawing is replaced by cold rolling and a subsequent partial aging. The results obtained in this study allow us to conclude that in the proposed process better properties and mechanical integrity are achieved than the traditional process, maintaining the electrical conductivity.
format Parte de libro
publisherVersion
author Bunte, Claudio
Zalcman, Diego
Medina, Carlos
Glassel, Moisés
author_facet Bunte, Claudio
Zalcman, Diego
Medina, Carlos
Glassel, Moisés
author_sort Bunte, Claudio
title Proposed Solution for Random Characteristics of Aluminium Alloy Wire Rods Due to the Natural Aging
title_short Proposed Solution for Random Characteristics of Aluminium Alloy Wire Rods Due to the Natural Aging
title_full Proposed Solution for Random Characteristics of Aluminium Alloy Wire Rods Due to the Natural Aging
title_fullStr Proposed Solution for Random Characteristics of Aluminium Alloy Wire Rods Due to the Natural Aging
title_full_unstemmed Proposed Solution for Random Characteristics of Aluminium Alloy Wire Rods Due to the Natural Aging
title_sort proposed solution for random characteristics of aluminium alloy wire rods due to the natural aging
publisher Elsevier
publishDate 2024
url http://hdl.handle.net/20.500.12272/11151
https://doi.org/10.1016/j.mspro.2015.04.012
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