Properties evaluation of semi-crystalline and amorphous polymers injected in AISI P20 molds repaired by welding

Detalhes bibliográficos
Autor(a) principal: Junkes,Rafael
Data de Publicação: 2020
Outros Autores: Howarth,Janaina Lisi Leite, Becker,Daniela, Bond,Danielle
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Matéria (Rio de Janeiro. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762020000300305
Resumo: ABSTRACT >Injection molds can fail after a certain period of use, which may compromise the final part’s integrity and quality, but that can be solved using welding repair processes. This work aimed to investigate the influence of AISI P20 molds repaired by Gas Tungsten Arc Welding (GTAW) and Nd-YAG laser-welding processes on the properties of injection-molded parts with semi-crystalline (polypropylene) and amorphous (polycarbonate and acrylonitrile butadiene and styrene terpolymer) thermoplastics. Welds were prepared by machining 0.8 mm-deep 40 mm x 5 mm grooves to be filled by GTAW and Nd-YAG laser-welding deposits, in order to simulate the repair of AISI P20 molds. All polymers were injected into weld-repaired and unrepaired molds, and then evaluated in terms of microstructure, crystallinity degree, mechanical properties and gloss. The results suggest that the repaired region for both studied welding processes, despite the difference in hardness of the weld region, does not significantly affect the properties of semi-crystalline and amorphous injected polymers.
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spelling Properties evaluation of semi-crystalline and amorphous polymers injected in AISI P20 molds repaired by weldingmoldsweld repairpolymersinjected partsAISI P20ABSTRACT >Injection molds can fail after a certain period of use, which may compromise the final part’s integrity and quality, but that can be solved using welding repair processes. This work aimed to investigate the influence of AISI P20 molds repaired by Gas Tungsten Arc Welding (GTAW) and Nd-YAG laser-welding processes on the properties of injection-molded parts with semi-crystalline (polypropylene) and amorphous (polycarbonate and acrylonitrile butadiene and styrene terpolymer) thermoplastics. Welds were prepared by machining 0.8 mm-deep 40 mm x 5 mm grooves to be filled by GTAW and Nd-YAG laser-welding deposits, in order to simulate the repair of AISI P20 molds. All polymers were injected into weld-repaired and unrepaired molds, and then evaluated in terms of microstructure, crystallinity degree, mechanical properties and gloss. The results suggest that the repaired region for both studied welding processes, despite the difference in hardness of the weld region, does not significantly affect the properties of semi-crystalline and amorphous injected polymers.Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiroem cooperação com a Associação Brasileira do Hidrogênio, ABH22020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762020000300305Matéria (Rio de Janeiro) v.25 n.3 2020reponame:Matéria (Rio de Janeiro. Online)instname:Matéria (Rio de Janeiro. Online)instacron:RLAM10.1590/s1517-707620200003.1086info:eu-repo/semantics/openAccessJunkes,RafaelHowarth,Janaina Lisi LeiteBecker,DanielaBond,Danielleeng2020-08-13T00:00:00Zoai:scielo:S1517-70762020000300305Revistahttp://www.materia.coppe.ufrj.br/https://old.scielo.br/oai/scielo-oai.php||materia@labh2.coppe.ufrj.br1517-70761517-7076opendoar:2020-08-13T00:00Matéria (Rio de Janeiro. Online) - Matéria (Rio de Janeiro. Online)false
dc.title.none.fl_str_mv Properties evaluation of semi-crystalline and amorphous polymers injected in AISI P20 molds repaired by welding
title Properties evaluation of semi-crystalline and amorphous polymers injected in AISI P20 molds repaired by welding
spellingShingle Properties evaluation of semi-crystalline and amorphous polymers injected in AISI P20 molds repaired by welding
Junkes,Rafael
molds
weld repair
polymers
injected parts
AISI P20
title_short Properties evaluation of semi-crystalline and amorphous polymers injected in AISI P20 molds repaired by welding
title_full Properties evaluation of semi-crystalline and amorphous polymers injected in AISI P20 molds repaired by welding
title_fullStr Properties evaluation of semi-crystalline and amorphous polymers injected in AISI P20 molds repaired by welding
title_full_unstemmed Properties evaluation of semi-crystalline and amorphous polymers injected in AISI P20 molds repaired by welding
title_sort Properties evaluation of semi-crystalline and amorphous polymers injected in AISI P20 molds repaired by welding
author Junkes,Rafael
author_facet Junkes,Rafael
Howarth,Janaina Lisi Leite
Becker,Daniela
Bond,Danielle
author_role author
author2 Howarth,Janaina Lisi Leite
Becker,Daniela
Bond,Danielle
author2_role author
author
author
dc.contributor.author.fl_str_mv Junkes,Rafael
Howarth,Janaina Lisi Leite
Becker,Daniela
Bond,Danielle
dc.subject.por.fl_str_mv molds
weld repair
polymers
injected parts
AISI P20
topic molds
weld repair
polymers
injected parts
AISI P20
description ABSTRACT >Injection molds can fail after a certain period of use, which may compromise the final part’s integrity and quality, but that can be solved using welding repair processes. This work aimed to investigate the influence of AISI P20 molds repaired by Gas Tungsten Arc Welding (GTAW) and Nd-YAG laser-welding processes on the properties of injection-molded parts with semi-crystalline (polypropylene) and amorphous (polycarbonate and acrylonitrile butadiene and styrene terpolymer) thermoplastics. Welds were prepared by machining 0.8 mm-deep 40 mm x 5 mm grooves to be filled by GTAW and Nd-YAG laser-welding deposits, in order to simulate the repair of AISI P20 molds. All polymers were injected into weld-repaired and unrepaired molds, and then evaluated in terms of microstructure, crystallinity degree, mechanical properties and gloss. The results suggest that the repaired region for both studied welding processes, despite the difference in hardness of the weld region, does not significantly affect the properties of semi-crystalline and amorphous injected polymers.
publishDate 2020
dc.date.none.fl_str_mv 2020-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762020000300305
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762020000300305
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/s1517-707620200003.1086
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro
em cooperação com a Associação Brasileira do Hidrogênio, ABH2
publisher.none.fl_str_mv Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro
em cooperação com a Associação Brasileira do Hidrogênio, ABH2
dc.source.none.fl_str_mv Matéria (Rio de Janeiro) v.25 n.3 2020
reponame:Matéria (Rio de Janeiro. Online)
instname:Matéria (Rio de Janeiro. Online)
instacron:RLAM
instname_str Matéria (Rio de Janeiro. Online)
instacron_str RLAM
institution RLAM
reponame_str Matéria (Rio de Janeiro. Online)
collection Matéria (Rio de Janeiro. Online)
repository.name.fl_str_mv Matéria (Rio de Janeiro. Online) - Matéria (Rio de Janeiro. Online)
repository.mail.fl_str_mv ||materia@labh2.coppe.ufrj.br
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